Today's Message Index:
----------------------
1. 07:59 AM - Re: Pitot Heat wiring question.... (David Nelson)
2. 08:10 AM - Re: Cleveland Crimp Tool Mystery Solved .NOT . (Paul Messinger)
3. 09:47 AM - Electrical Education ()
4. 10:17 AM - Re:Resistor values for LEDs (Wayne Williams)
5. 01:13 PM - Re; Electrical Education (Eric M. Jones)
6. 05:35 PM - Watts conversion (Jon Finley)
7. 05:52 PM - Re: AeroElectric-List Digest: 19 Msgs - 08/29/04 (Rex & Jan Shaw)
8. 06:45 PM - Re: Watts conversion (Ron Koyich)
9. 07:01 PM - Re: Watts conversion (Steven Fingerhut)
10. 07:04 PM - Re: Cleveland Crimp Tool Mystery Solved .NOT . (DAVID REEL)
11. 10:31 PM - Re: Watts conversion (Brian Lloyd)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Pitot Heat wiring question.... |
--> AeroElectric-List message posted by: David Nelson <david.nelson@pobox.com>
Hi Jack,
Is the ground wire at the pitot _really_ attached to ground and verified with a
multi-meter?
Regards,
/\/elson
Austin, TX
Left wing/tank
On Sat, 4 Sep 2004, jacklockamy wrote:
> --> AeroElectric-List message posted by: "jacklockamy"
> <jacklockamy@verizon.net>
>
> Here's one that has me 'stumped'......
>
> Building an RV-7A. Wings are on... I'm at the airport wiring the
> wings/wingtips. I hook up the Pitot (Gretz) Heat wire, turn ON the battery
> side of the Cessna type Split Master switch I have installed... no heat.
> Check to make sure I'm getting 12v to the pitot mast +wiring... yep. Then I
> turn the ALTERNATOR side of the split master ON in conjunction with the
> Battery side of the switch... then I get heat at the Pitot mast. And when I
> say "heat".. I mean "HEAT!!!". My Gretz heated pitot tube gets so hot it
> will burn you if you aren't careful.
>
> What is going on here? I have a master bus (where the pitot + is connected)
> in addition to an Avionics bus. Everthing else is working 'normally'.....
> Just can't figure out why the pitot mast doesn't get hot until the Alternator
> side of the split master is turned ON with the Battery side turned ON. All
> other items on the Master bus get "hot' when I turn the battery side of the
> split switch ON. Does this make sense? Why doesn't the mast get hot with
> just the Battery side of the switch on? I don't have an engine mounted
> (still at the re-builders) thus I have no alternator hooked up either.......
>
> It works, but I just don't understand what is going on....
>
> Thanks in advance,
>
> Jack Lockamy Camarillo, CA
>
> BTW.... I was lucky enough to purchase my chromed Gretz heated Pitot tube,
> mounting bracket, etc. for $50! Another fellow was parting out his RV and I
> snagged it!
>
>
>
>
>
>
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Cleveland Crimp Tool Mystery Solved .NOT . |
--> AeroElectric-List message posted by: "Paul Messinger" <paulm@olypen.com>
Thanks for your very complete reply.
Paul
----- Original Message -----
From: "Robert L. Nuckolls, III" <b.nuckolls@cox.net>
Subject: AeroElectric-List: Cleveland Crimp Tool Mystery Solved .NOT .
> >snip>>Unlike the tools B&C sells with symmetrical dies, >>>>
> >
> >Bob, I simply do not understand how the above symetrical die tool will
> >properly crimp a terminal.
> >
>snipped
> Insulation grip? Again, not very pretty
> but I see no reason in physics to suspect
> it's any less adequate to the task than
> other tools I have ranging from $40 to $600.
>
> Bob . . .
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Electrical Education |
--> AeroElectric-List message posted by: <bakerocb@cox.net>
9/5/2004
Hello Bob Nuckolls, The slide switch at this URL
<<http://ottoeng.com/control/slideswitch.htm>> has these listed electrical ratings at 28 V DC:
Resistive: 5 Amp. Inductive: 3 Amp. Lamp: 1 Amp. Low level: 10 mAmp @30 mv.
Can you please help me better understand the significance of these ratings? The
following questions come to my mind:
1) Wouldnt an incandescent lamp (assumed) be a resistive load and have the same
rating as given for the resistive circuit load?
2) I understand the concept of higher initial inrush current affecting the lamp
current rating, but wouldnt that apply to any resistive load and not just the
lamp?
3) Why would the switch need a low level rating? If it can handle the larger current
loads couldnt it easily handle any small current load?
4) Is the inductive circuit current rating lower than the resistive circuit rating
because of the voltage spike caused by opening the switch?
5) Couldnt that inductive circuit current rating for the switch be higher if one
used a diode connected to ground across the inductive coil in the circuit?
6) Would those current load ratings improve, be less, or the same if the switch
were used in a 12 V DC circuit instead of a 28 V DC circuit?
Many thanks for your help from an electrical neophyte.
OC
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | RE:Resistor values for LEDs |
--> AeroElectric-List message posted by: "Wayne Williams" <rwayne@gamewood.net>
Thanks, everyone, for the excellent ideas on LEDs. I learned a lot!
Wayne
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re; Electrical Education |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
--> AeroElectric-List message posted by: <bakerocb@cox.net>
>Resistive: 5 Amp. Inductive: 3 Amp. Lamp: 1 Amp. Low level: 10 mAmp @30 mv.
These describe how the switch handles various types of DC switch loads.
What seems like a simple contact closure is in fact a complicated piece of
work when you look at the details. A hundred more operating modes could be
called out. The devil is in the details.
>1) Wouldnt an incandescent lamp (assumed) be a resistive load and have the
same
>rating as given for the resistive circuit load?
A resistive load behaves like Ohm's law. But a lamp usually has a
cold-filament current many times the hot filament current. It does not obey
Ohm's law very well.
>2) I understand the concept of higher initial inrush current affecting the
lamp
>current rating, but wouldnt that apply to any resistive load and not just
the
>lamp?
Load resistors are made to exhibit low surge currents. (They are often
crafted for other characteristics too).
>3) Why would the switch need a low level rating? If it can handle the
larger current
>loads couldnt it easily handle any small current load?
Many switches have poor or intermittent contact in what are called "dry"
loads--low volts. The material, shape and pressure of the contacts
determines this. Low voltages at higher currents are less of a problem
because the contacts weld a bit.. Gold does especially well for dry loads
like logic circuits.
>4) Is the inductive circuit current rating lower than the resistive circuit
rating
>because of the voltage spike caused by opening the switch?
Like the lamp load, the initial inductive circuit current can be arbitrarily
high, but the real issue is that the inductive load arcs when the switch
tries to open. This erodes the contacts.
>5) Couldnt that inductive circuit current rating for the switch be higher
if one
>used a diode connected to ground across the inductive coil in the circuit?
It turns out that it helps but doesn't cure the problem. A capacitor across
the contacts helps more. Then you throw a bunch of EMI parts into the mess.
>6) Would those current load ratings improve, be less, or the same if the
switch
>were used in a 12 V DC circuit instead of a 28 V DC circuit?
Great question! Switch contacts carry current when closed. When open they
withstand voltage. Sometimes the transition is difficult.
So the simple answer is that the current capacities stay roughly the same
regardless of voltage. The complicated answer is that everything changes.
Regards,
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge MA 01550-2705
Phone (508) 764-2072
Email: emjones@charter.net
"Everything you've learned in school as "obvious" becomes
less and less obvious as you begin to study the universe.
For example, there are no solids in the universe. There's
not even a suggestion of a solid. There are no absolute con-
tinuums. There are no surfaces. There are no straight lines."
- R. Buckminster Fuller
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Watts conversion |
--> AeroElectric-List message posted by: "Jon Finley" <jon@finleyweb.net>
Hi all,
I have purchased a really slick little wireless color video camera. I
intend to mount this camera on my airframe in various places for both
enjoyment and drag reduction efforts (I have found it REALLY hard to see
the belly of the airplane while flying!). I need to carry a little 13"
tv/vcr combo in the airplane to record the video. So, the question:
The tv/vcr unit states that it consumes 65 watts at 13.2 volts. If I
understand this correctly, the unit will be consuming about 6.5 amps (at
13.2 volts). Is this correct?
Just wanted to confirm before I plug it into my plane and smoke the
electrical system....
Thanks much!
Jon Finley
N90MG Q2 - Subaru EJ-22 DD - 465 Hrs. TT
Apple Valley, Minnesota
http://www.FinleyWeb.net/Q2Subaru
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: AeroElectric-List Digest: 19 Msgs - 08/29/04 |
--> AeroElectric-List message posted by: "Rex & Jan Shaw" <rexjan@bigpond.com>
----- Original Message -----
From: "AeroElectric-List Digest Server"
<aeroelectric-list-digest@matronics.com>
Subject: AeroElectric-List Digest: 19 Msgs - 08/29/04
> *
>
> ==================================================
> Online Versions of Today's List Digest Archive
> ==================================================
>
> Today's complete AeroElectric-List Digest can be also be found in either
> of the two Web Links listed below. The .html file includes the Digest
> formatted in HTML for viewing with a web browser and features Hyperlinked
> Indexes and Message Navigation. The .txt file includes the plain ASCII
> version of the AeroElectric-List Digest and can be viewed with a generic
> text editor such as Notepad or with a web browser.
>
> HTML Version:
>
>
http://www.matronics.com/digest/aeroelectric-list/Digest.AeroElectric-List.2
004-08-29.html
>
> Text Version:
>
>
http://www.matronics.com/digest/aeroelectric-list/Digest.AeroElectric-List.2
004-08-29.txt
>
>
> ================================================
> EMail Version of Today's List Digest Archive
> ================================================
>
>
> AeroElectric-List Digest Archive
> ---
> Total Messages Posted Sun 08/29/04: 19
>
>
> Today's Message Index:
> ----------------------
>
> 1. 05:22 AM - Re: OV protection for PM alternators (Ken)
> 2. 08:23 AM - Re: Off Topic....Quo Vadis? (beecho@beecho.org)
> 3. 10:30 AM - Transformer (Mickey Billings)
> 4. 11:27 AM - Re: Transformer (Richard E. Tasker)
> 5. 12:49 PM - Re: Transformer (Mickey Billings)
> 6. 04:13 PM - Re: OV protection for PM alternators (David Carter)
> 7. 05:15 PM - Re: Re: Switched Pot (Robert L. Nuckolls, III)
> 8. 05:23 PM - Posting dwg drawings or pdf images to a website for
other builders to view (David Carter)
> 9. 05:36 PM - Re: Transformer (Richard E. Tasker)
> 10. 06:08 PM - Re: Posting dwg drawings or pdf images to a website for
other builders to view (Jon Finley)
> 11. 06:12 PM - Re: Transformer (Ron Koyich)
> 12. 06:22 PM - Re: Posting dwg drawings or pdf images to a website for
other builders to view (Jon Finley)
> 13. 07:15 PM - SCR for a Hobbs meter (Tom Brusehaver)
> 14. 07:19 PM - Re: Posting dwg drawings or pdf images to a website for
other builders to view (cgalley)
> 15. 07:52 PM - Re: OV protection for PM alternators (Robert L.
Nuckolls, III)
> 16. 07:55 PM - Re: SCR for a Hobbs meter (Robert L. Nuckolls, III)
> 17. 08:00 PM - Re: OV protection for PM alternators (Ken)
> 18. 09:10 PM - Re: Posting dwg drawings or pdf images to a website for
other builders to view (David Carter)
> 19. 11:04 PM - RG (Fergus Kyle)
>
>
> ________________________________ Message 1
_____________________________________
>
>
> Time: 05:22:31 AM PST US
> From: Ken <klehman@albedo.net>
> Subject: Re: AeroElectric-List: OV protection for PM alternators
> on juliet
>
> --> AeroElectric-List message posted by: Ken <klehman@albedo.net>
>
> Hi David
>
> While it seemed like a good idea to fuse the wires from the PM
> alternator I don't think that accomplishes anything. If the fuse(s) can
> handle max alternator output then they likely won't pop if the regulator
> develops a short. A fuse on the output of the VR would protect the VR
> from excessive battery sourced current though in the event of a VR
> short. That is why I was musing that it might be better to put the OV
> disconnect relay on the alternator output wires. I still don't know if a
> VR short is in fact a significant risk on a John Deere VR though...
>
> For what it's worth I'm finding that the architecture diagrams have to
> considered together with component placement. ie. Which side of the
> firewall is the component and how long will the wires be. That largely
> made the decision for me whether to use manual or electric contactors
> for instance. And the components don't always seem to fit where I
> planned them either ;)
>
> Ken
>
> David Carter wrote:
>
> >--> AeroElectric-List message posted by: "David Carter"
> <dcarter@datarecall.net>
> >
> >Ken,
> >
> >I was up past midnight last night (this morning) modifying my Z-13.
> >Elimintated the starter contactor and removed jumper between top of
> solenoid
> >& side and ran wire from starter switch to side of solenoid.
> Eliminated PM
> >Alternator Sw (just grounded bottom of 5 amp CB associated with OVM).
> Then
> >I started working on the PM alternator circuitry - spent lot of time
> moving
> >the OVM stuff way off to right of diagram to make room to shift other
> stuff
> >left. Was planning to insert the OVM in between the PM Alt and the
VR -
> >then realized - "That stuff coming out of the alternator is not
> regulated -
> >so why would I put an OVM in there!!??" My mental "what if'ing" and
> >"analysis" still lacks something - I hope it is ONLY lack of
> experience with
> >this electrical stuff and that I'll get better. I then clicked "Undo"
> a LOT
> >to return the OVM to original place in Z-13 and quit for the night.
> >
> >Someone else suggested fusing the 2 AC wires between the PM alternator
> & its
> >VR - sounds OK to me as long as we don't introduce a corrosion, high
> >resistance, failure point. Solder in a "fusable link" or "fusable
> wire" or
> >connect in an ANL limiter or some such - I need to re-read the
> Aeroelectric
> >Connection about those things.
> >
> >
>
>
> ________________________________ Message 2
_____________________________________
>
>
> Time: 08:23:50 AM PST US
> From: beecho@beecho.org
> Subject: Re: AeroElectric-List: Off Topic....Quo Vadis?
>
> --> AeroElectric-List message posted by: beecho@beecho.org
>
> Hi Eric
> I see you have considered San Luis Obispo. Great place, a truly wonderful
climate
> and two home building groups. The one in Paso Robles a bit North is much
more
> active and on a great non towered airport. (PRB) As in most of Southern
> CA, home prices are excessive. We can use your expertise!!
> Tom Friedland, Atascadero CA Europa mono/Jabiru N96V
> ----- Original Message -----
> From: Walter Tondu <walter@tondu.com>
> Subject: Re: AeroElectric-List: Off Topic....Quo Vadis?
>
> --> AeroElectric-List message posted by: Walter Tondu <walter@tondu.com>
>
> On 08/28 7:24, Eric M. Jones wrote:
>
> > --> AeroElectric-List message posted by: "Eric M. Jones"
<emjones@charter.net>
> >
> >
> > Life's vicissitudes have marooned me in Massachusetts. (Wife left, cat
went
> > feral, got fired).
> >
> > New England is a good place to raise children, and it has good schools,
> > lobsters, oaks, proximity to NYC, and a short flight to Europe.
> >
> > None of these really suit my needs anymore. I am 57 and single again;
have
> > been running a small business on the internet, and can locate anywhere
I
> > want. Financially I am okay.
> >
> > I prefer the West. I have lived in Los Angeles. I love Tucson, but no
longer
> > know anyone there. I have a sister in Portland Oregon, but they are
moving
> > in a few years. I have a scattering of friends all over the place. I
have
> > looked at Prescott, Tucson, LA, San Luis Obispo, Cambria, Eureka,
Portland,
> > Seattle, Victoria BC. Small towns are better, with some access to big
cities
> > if necessary.
> >
> > I dont need much square footage. I need a place to build my Glastar and
run
> > my little internet business. I would like a very friendly community as
well
> > as proximity to an active homebuilder group.
> >
> > QUESTION: Where should I go? Where is the ideal place and why?
>
> North Dallas. Cheap living. Airparks all around. Friendly people.
> Close proximity to the big city should you require that. Tons of RVs
> too. Not sure about Glastars. See you there in a couple of years.
>
> Oh, you have to like heat, thunderstorms and the occasional hail storm.
>
> > Please contact me offline:
> > Eric M. Jones
> > www.PerihelionDesign.com
> > 113 Brentwood Drive
> > Southbridge MA 01550-2705
> > Phone (508) 764-2072
> > Email: emjones@charter.net
> >
> >
> >
> >
> >
>
> --
> Walter Tondu
> http://www.rv7-a.com
>
>
> ________________________________ Message 3
_____________________________________
>
>
> Time: 10:30:48 AM PST US
> From: "Mickey Billings" <mbilli@cox.net>
> Subject: AeroElectric-List: Transformer
>
> --> AeroElectric-List message posted by: "Mickey Billings"
<mbilli@cox.net>
>
> Hey guys, does anyone know what the dots represent on a schematic
> representing a audio transformer? The transformer is a 8 ohm to 500 ohm
at
> center taps. Therefore the Secondary has connections 1 2 & 3 with a DOT
at
> 1 & 2 on the schematic. The Primary connections are 4 5 & 6 with a DOT on
4
> & 5......I don't know what the dots represent! Can anyone help! The
> application is to convert the output on the CD player (8) ohms to the
input
> on the Flightcom 403 (600) ohms in order to use headphones.
>
> Thanks in advance
> Mickey Billings RV7
> N445BH
>
>
> ________________________________ Message 4
_____________________________________
>
>
> Time: 11:27:06 AM PST US
> From: "Richard E. Tasker" <retasker@optonline.net>
> Subject: Re: AeroElectric-List: Transformer
>
> --> AeroElectric-List message posted by: "Richard E. Tasker"
<retasker@optonline.net>
>
> The dots mark the phasing of the windings. That is, they mark the
> direction of the windings. Or, from an electrical point of view: If
> you apply a sine wave to the primary, when the signal waveform is rising
> at the dotted end of the primary, it will also be rising at the dotted
> end of the secondary.
>
> Assuming you are connecting a CD output to a monaural headphone the dots
> make no difference..
>
> However, if you have a stereo CD output you want to connect to stereo
> headphones, you will need two transformers and then it makes a
> difference. Both transformers should be wired so the dots are
> consistent. Connect the transformers so all the dots are connected to
> common (or all the opposite). If you connect them differently from each
> other your stereo music will sound a little strange - sort of more
> spread out.
>
> Dick Tasker
>
> Mickey Billings wrote:
>
> >--> AeroElectric-List message posted by: "Mickey Billings"
<mbilli@cox.net>
> >
> >Hey guys, does anyone know what the dots represent on a schematic
> >representing a audio transformer? The transformer is a 8 ohm to 500 ohm
at
> >center taps. Therefore the Secondary has connections 1 2 & 3 with a DOT
at
> >1 & 2 on the schematic. The Primary connections are 4 5 & 6 with a DOT
on 4
> >& 5......I don't know what the dots represent! Can anyone help! The
> >application is to convert the output on the CD player (8) ohms to the
input
> >on the Flightcom 403 (600) ohms in order to use headphones.
> >
> >Thanks in advance
> >Mickey Billings RV7
> >N445BH
> >
> >
>
>
> ________________________________ Message 5
_____________________________________
>
>
> Time: 12:49:55 PM PST US
> From: "Mickey Billings" <mbilli@cox.net>
> Subject: Re: AeroElectric-List: Transformer
>
> --> AeroElectric-List message posted by: "Mickey Billings"
<mbilli@cox.net>
>
> Dick, thank you for the quick response. I do have 2 transformers and I am
> using it for stereo. So are you saying the dots do not matter as long as
I
> keep both transformers wired exactly the same?
>
> Mickey Billings
> RV7 N45BH
>
> ----- Original Message -----
> From: "Richard E. Tasker" <retasker@optonline.net>
> Subject: Re: AeroElectric-List: Transformer
>
>
> > --> AeroElectric-List message posted by: "Richard E. Tasker"
> <retasker@optonline.net>
> >
> > The dots mark the phasing of the windings. That is, they mark the
> > direction of the windings. Or, from an electrical point of view: If
> > you apply a sine wave to the primary, when the signal waveform is rising
> > at the dotted end of the primary, it will also be rising at the dotted
> > end of the secondary.
> >
> > Assuming you are connecting a CD output to a monaural headphone the dots
> > make no difference..
> >
> > However, if you have a stereo CD output you want to connect to stereo
> > headphones, you will need two transformers and then it makes a
> > difference. Both transformers should be wired so the dots are
> > consistent. Connect the transformers so all the dots are connected to
> > common (or all the opposite). If you connect them differently from each
> > other your stereo music will sound a little strange - sort of more
> > spread out.
> >
> > Dick Tasker
> >
> > Mickey Billings wrote:
> >
> > >--> AeroElectric-List message posted by: "Mickey Billings"
> <mbilli@cox.net>
> > >
> > >Hey guys, does anyone know what the dots represent on a schematic
> > >representing a audio transformer? The transformer is a 8 ohm to 500
ohm
> at
> > >center taps. Therefore the Secondary has connections 1 2 & 3 with a
DOT
> at
> > >1 & 2 on the schematic. The Primary connections are 4 5 & 6 with a DOT
> on 4
> > >& 5......I don't know what the dots represent! Can anyone help! The
> > >application is to convert the output on the CD player (8) ohms to the
> input
> > >on the Flightcom 403 (600) ohms in order to use headphones.
> > >
> > >Thanks in advance
> > >Mickey Billings RV7
> > >N445BH
> > >
> > >
> >
> >
>
>
> ________________________________ Message 6
_____________________________________
>
>
> Time: 04:13:46 PM PST US
> From: "David Carter" <dcarter@datarecall.net>
> Subject: Re: AeroElectric-List: OV protection for PM alternators
>
> --> AeroElectric-List message posted by: "David Carter"
<dcarter@datarecall.net>
>
> Ken, comments and agreement embedded below.
>
> David
>
> ----- Original Message -----
> From: "Ken" <klehman@albedo.net>
> Subject: Re: AeroElectric-List: OV protection for PM alternators on juliet
>
>
> > --> AeroElectric-List message posted by: Ken <klehman@albedo.net>
> >
> > Hi David
> >
> > While it seemed like a good idea to fuse the wires from the PM
> > alternator I don't think that accomplishes anything. If the fuse(s) can
> > handle max alternator output then they likely won't pop if the regulator
> > develops a short.
>
> ........Agree
>
> > A fuse on the output of the VR would protect the VR
> > from excessive battery sourced current though in the event of a VR
> > short.
>
> .........Z-13 already has a fuselink (16awg wire in a 12 awg main
> alternator-to-battery circuit) that does what you want - no need to add
> anything, i.e., if VR fried and shorted, and there was no longer any
output
> from "main output" terminal of VR, and output from PM alternator could not
> get out of the VR box, and if the postulated short existed in the VR box,
> then there would be a massive short from the battery to that new
"unplanned"
> ground - & the fuselink would do its job and melt.
>
> > That is why I was musing that it might be better to put the OV
> > disconnect relay on the alternator output wires.
>
> ........I think we agree that we can't see a need for putting anything,
> especially the OV system, between PM alternator & regulator.
>
> > I still don't know if a
> > VR short is in fact a significant risk on a John Deere VR though...
>
> ...........as noted above, we are covered, regardless of risk.
>
> <snip>
>
> > Ken
>
>
> ________________________________ Message 7
_____________________________________
>
>
> Time: 05:15:22 PM PST US
> From: "Robert L. Nuckolls, III" <rnuckolls@aeroelectric.com>
> Subject: Re: AeroElectric-List: Re: Switched Pot
>
> --> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
<rnuckolls@aeroelectric.com>
>
> At 07:30 PM 8/27/2004 -0700, you wrote:
>
> >--> AeroElectric-List message posted by: Geoff Evans
> ><hellothaimassage@yahoo.com>
> >
> >Bob.
> >
> >Thanks for the response.
> >
> > >>
> >Don't want lights? Turn them down to min output of 4v and call them "off"
> ><<
> >
> >Regarding that.. Does the LM-317 put out more heat at at low voltage
output
> >(dim) settings or high voltage output (bright) settings?
> >
> >If it makes more heat at high settings, then no problem. If it makes more
> >heat at low settings, then will having the LM-317 and heatsink setting
there
> >cooking 75% of the time result in any problems?
>
> Not if the heatsink is adequate.
>
> If an adjustable regulator like the LM317 were driving a purely
> resistive load, then output current is directly proportional to
> output voltage. In this case, power dissipated in the LM317
> peaks and is equal to power in load when output voltage
> is 1/2 the supply voltage.
>
> Since the lamp's voltage resistance characteristics are
> not linear, then driving a bank of lamps with a linear
> regulator has a characteristic something like this:
>
> Volts Volts Amps Watts Watts
> In Lamp Total Reg Lamp
>
> 14.0 1.0 .14 1.82 .14
> 14.0 2.0 .17 2.04 .34
> 14.0 3.0 .19 2.09 .57
> 14.0 4.0 .21 2.10 .84
> 14.0 5.0 .24 2.16 1.2
> 14.0 6.0 .26 2.08 1.7
> 14.0 7.0 .28 1.96 1.96
> 14.0 8.0 .29 1.74 2.32
> 14.0 9.0 .31 1.55 2.79
> 14.0 10.0 .33 1.32 3.30
> 14.0 11.0 .34 1.02 3.74
> 14.0 12.0 .36 0.72 4.32
> 14.0 13.0 .37 0.37 4.81
> 14.0 14.0 .39 0.0 5.46
>
> With this particular lamp load, it's easy to see that
> power dissipated in the regulator peaks at something
> on the order of 35% of full output due effects of
> lamp's strong positive temperature coefficient of
> resistance. This exercise also demonstrates
> the fact that peak power dissipated in the regulator
> is less than 1/2 total power for the lamps.
>
> So, a lamp load of say 1.5 amps (21 watts) would
> be expected to produce a maximum power dissipation
> in the controller of less than 10 watts. This value
> is what sizes the heat sink.
>
> Bob . . .
>
>
> ---
>
>
> ________________________________ Message 8
_____________________________________
>
>
> Time: 05:23:12 PM PST US
> From: "David Carter" <dcarter@datarecall.net>
> Subject: AeroElectric-List: Posting dwg drawings or pdf images to a
website for
> other builders to view
>
> --> AeroElectric-List message posted by: "David Carter"
<dcarter@datarecall.net>
>
> I have an unsophisticated website and am trying to learn how to add stuff
to
> it. I can post .jpg stuff OK. Today, I tried posting a .dwg file (my mod
> to Z-13) - it wouldn't open with Autocad (actually, Intellicad clone of
> Autocad). Converted to .pdf and uploaded - still won't display. I think
I
> don't have the source coding for that image correct in my "Builder's Log".
> My website url for that page is
> http://www.datarecall.net/~dcarter/Builder's%20Log.html
> - Anyone have either of these type images posted - I'd like to go to
> your site and "copy source" and see how you do it.
>
> David
>
>
> ________________________________ Message 9
_____________________________________
>
>
> Time: 05:36:35 PM PST US
> From: "Richard E. Tasker" <retasker@optonline.net>
> Subject: Re: AeroElectric-List: Transformer
>
> --> AeroElectric-List message posted by: "Richard E. Tasker"
<retasker@optonline.net>
>
> Yes, that is correct!
>
> Dick
>
> Mickey Billings wrote:
>
> >--> AeroElectric-List message posted by: "Mickey Billings"
<mbilli@cox.net>
> >
> >Dick, thank you for the quick response. I do have 2 transformers and I
am
> >using it for stereo. So are you saying the dots do not matter as long as
I
> >keep both transformers wired exactly the same?
> >
> >Mickey Billings
> >RV7 N45BH
> >
> >----- Original Message -----
> >From: "Richard E. Tasker" <retasker@optonline.net>
> >To: <aeroelectric-list@matronics.com>
> >Subject: Re: AeroElectric-List: Transformer
> >
> >
> >
> >
> >>--> AeroElectric-List message posted by: "Richard E. Tasker"
> >>
> >>
> ><retasker@optonline.net>
> >
> >
> >>The dots mark the phasing of the windings. That is, they mark the
> >>direction of the windings. Or, from an electrical point of view: If
> >>you apply a sine wave to the primary, when the signal waveform is rising
> >>at the dotted end of the primary, it will also be rising at the dotted
> >>end of the secondary.
> >>
> >>Assuming you are connecting a CD output to a monaural headphone the dots
> >>make no difference..
> >>
> >>However, if you have a stereo CD output you want to connect to stereo
> >>headphones, you will need two transformers and then it makes a
> >>difference. Both transformers should be wired so the dots are
> >>consistent. Connect the transformers so all the dots are connected to
> >>common (or all the opposite). If you connect them differently from each
> >>other your stereo music will sound a little strange - sort of more
> >>spread out.
> >>
> >>Dick Tasker
> >>
> >>Mickey Billings wrote:
> >>
> >>
> >>
> >>>--> AeroElectric-List message posted by: "Mickey Billings"
> >>>
> >>>
> ><mbilli@cox.net>
> >
> >
> >>>Hey guys, does anyone know what the dots represent on a schematic
> >>>representing a audio transformer? The transformer is a 8 ohm to 500
ohm
> >>>
> >>>
> >at
> >
> >
> >>>center taps. Therefore the Secondary has connections 1 2 & 3 with a
DOT
> >>>
> >>>
> >at
> >
> >
> >>>1 & 2 on the schematic. The Primary connections are 4 5 & 6 with a DOT
> >>>
> >>>
> >on 4
> >
> >
> >>>& 5......I don't know what the dots represent! Can anyone help! The
> >>>application is to convert the output on the CD player (8) ohms to the
> >>>
> >>>
> >input
> >
> >
> >>>on the Flightcom 403 (600) ohms in order to use headphones.
> >>>
> >>>Thanks in advance
> >>>Mickey Billings RV7
> >>>N445BH
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >
> >
> >
> >
>
>
> ________________________________ Message 10
____________________________________
>
>
> Time: 06:08:38 PM PST US
> From: "Jon Finley" <jon@finleyweb.net>
> Subject: RE: AeroElectric-List: Posting dwg drawings or pdf images to a
website
> for other builders to view
>
> --> AeroElectric-List message posted by: "Jon Finley" <jon@finleyweb.net>
>
> Hi David,
>
> Lots of good HTML help online but to get you started:
>
> The images that you have on your page are "shown" thru the use of an IMG
> (image tag). One of your links is:
>
> <img src="/%7Edcarter/PhotoAlbum/ElevTrim3.jpg"
> alt="CableComingOutOfTunnelInBagArea" width="288" height="216">
>
> Typical image type (jpg, bmp, gif, etc...) links work as browsers know
> how to display these file types. A browser does not know how to display
> an ACAD drawing. So, you generally have to display a link to these files
> using a hyperlink tag (A :
>
> Q2 Front Hinged Canopy
>
> Most browsers figure out that they don't know how to display this file
> so they ask if you would like to open or save the file (if open, what
> program to use).
>
> There are a millions of things that can be done via HTML, the key is
> finding the thing that works! :-)
>
> Jon Finley
> N90MG Q2 - Subaru EJ-22 DD - 461 Hrs. TT
> Apple Valley, Minnesota
> http://www.FinleyWeb.net/Q2Subaru
>
>
> > -----Original Message-----
> > From: owner-aeroelectric-list-server@matronics.com
> > [mailto:owner-aeroelectric-list-server@matronics.com] On
> > Behalf Of David Carter
> > Sent: Sunday, August 29, 2004 7:22 PM
> > To: aeroelectric-list
> > Subject: AeroElectric-List: Posting dwg drawings or pdf
> > images to a website for other builders to view
> >
> >
> > --> AeroElectric-List message posted by: "David Carter"
> > --> <dcarter@datarecall.net>
> >
> > I have an unsophisticated website and am trying to learn how
> > to add stuff to it. I can post .jpg stuff OK. Today, I
> > tried posting a .dwg file (my mod to Z-13) - it wouldn't open
> > with Autocad (actually, Intellicad clone of Autocad).
> > Converted to .pdf and uploaded - still won't display. I
> > think I don't have the source coding for that image correct
> > in my "Builder's Log". My website url for that page is
> > http://www.datarecall.net/~dcarter/Builder's%20Log.html
> > - Anyone have either of these type images posted - I'd
> > like to go to your site and "copy source" and see how you do it.
> >
> > David
>
>
> ________________________________ Message 11
____________________________________
>
>
> Time: 06:12:29 PM PST US
> From: "Ron Koyich" <Ron@Koyich.com>
> Subject: RE: AeroElectric-List: Transformer
>
> --> AeroElectric-List message posted by: "Ron Koyich" <Ron@Koyich.com>
>
> I just have to ask: why are folks are still using transformers for audio
> distribution in aircraft (or ??)
>
>
> ________________________________ Message 12
____________________________________
>
>
> Time: 06:22:51 PM PST US
> From: "Jon Finley" <jon@finleyweb.net>
> Subject: RE: AeroElectric-List: Posting dwg drawings or pdf images to a
website
> for other builders to view
>
> --> AeroElectric-List message posted by: "Jon Finley" <jon@finleyweb.net>
>
> That hyperlink didn't come thru so well! :-)
>
> One more try, with quotes this time (don't include the quotes in your
> html):
>
> "File to upload"
>
> Jon
> DO NOT ARCHIVE
>
> > -----Original Message-----
> > From: owner-aeroelectric-list-server@matronics.com
> > [mailto:owner-aeroelectric-list-server@matronics.com] On
> > Behalf Of Jon Finley
> > Sent: Sunday, August 29, 2004 8:08 PM
> > To: aeroelectric-list@matronics.com
> > Subject: RE: AeroElectric-List: Posting dwg drawings or pdf
> > images to a website for other builders to view
> >
> >
> > --> AeroElectric-List message posted by: "Jon Finley"
> > --> <jon@finleyweb.net>
> >
> > Hi David,
> >
> > Lots of good HTML help online but to get you started:
> >
> > The images that you have on your page are "shown" thru the
> > use of an IMG (image tag). One of your links is:
> >
> > <img src="/%7Edcarter/PhotoAlbum/ElevTrim3.jpg"
> > alt="CableComingOutOfTunnelInBagArea" width="288" height="216">
> >
> > Typical image type (jpg, bmp, gif, etc...) links work as
> > browsers know how to display these file types. A browser does
> > not know how to display an ACAD drawing. So, you generally
> > have to display a link to these files using a hyperlink tag (A :
> >
> > Q2 Front Hinged Canopy
> >
> > Most browsers figure out that they don't know how to display
> > this file so they ask if you would like to open or save the
> > file (if open, what program to use).
> >
> > There are a millions of things that can be done via HTML, the
> > key is finding the thing that works! :-)
> >
> > Jon Finley
> > N90MG Q2 - Subaru EJ-22 DD - 461 Hrs. TT
> > Apple Valley, Minnesota
> > http://www.FinleyWeb.net/Q2Subaru
>
>
> ________________________________ Message 13
____________________________________
>
>
> Time: 07:15:08 PM PST US
> Subject: AeroElectric-List: SCR for a Hobbs meter
> From: Tom Brusehaver <cozytom@mn.rr.com>
>
> --> AeroElectric-List message posted by: Tom Brusehaver
<cozytom@mn.rr.com>
>
>
> I'm finishing a canard aircraft, and am about to hook up
> the hobbs meter. Electric tach, so I don't have another
> hour meter.
>
> I don't like the extra oil pressure lines, Tee's and
> wiring. Seems like one more place to have a leak
> and more stuff to put in the back of the plane.
>
> I am thinking of using an SCR to trigger the start of
> the Hobbs meter. The trigger would be the starter switch.
> Simple, light weight, and relable.
>
> It does risk leaving the master switch on, and having
> a few extra hours added to the time. Hopefully I'll
> actually use a shutdown checklist everytime, and that
> won't happen.
>
>
> ________________________________ Message 14
____________________________________
>
>
> Time: 07:19:52 PM PST US
> From: "cgalley" <cgalley@qcbc.org>
> Subject: Re: AeroElectric-List: Posting dwg drawings or pdf images to a
website
> for other builders to view
>
> --> AeroElectric-List message posted by: "cgalley" <cgalley@qcbc.org>
>
> I use PDFs all the time for forms on www.qcbc.org. Click on the left hand
> Heartland Century link. You do have to have adobe Acrobat reader
installed
> to see a PDF. The newsletter link has a link to Adobe's site to get the
free
> reader.
>
> As the reader has to load before display of the PDF, it takes a while and
> sometime you might think it isn't working because ot the time lag.
>
> Cy Galley - Webmaster www.qcbc.org
>
> ----- Original Message -----
> From: "David Carter" <dcarter@datarecall.net>
> Subject: AeroElectric-List: Posting dwg drawings or pdf images to a
website
> for other builders to view
>
>
> > --> AeroElectric-List message posted by: "David Carter"
> <dcarter@datarecall.net>
> >
> > I have an unsophisticated website and am trying to learn how to add
stuff
> to
> > it. I can post .jpg stuff OK. Today, I tried posting a .dwg file (my
mod
> > to Z-13) - it wouldn't open with Autocad (actually, Intellicad clone of
> > Autocad). Converted to .pdf and uploaded - still won't display. I
think
> I
> > don't have the source coding for that image correct in my "Builder's
Log".
> > My website url for that page is
> > http://www.datarecall.net/~dcarter/Builder's%20Log.html
> > - Anyone have either of these type images posted - I'd like to go
to
> > your site and "copy source" and see how you do it.
> >
> > David
> >
> >
>
>
> ________________________________ Message 15
____________________________________
>
>
> Time: 07:52:56 PM PST US
> From: "Robert L. Nuckolls, III" <b.nuckolls@cox.net>
> Subject: Re: AeroElectric-List: OV protection for PM alternators
>
> --> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
<b.nuckolls@cox.net>
>
> At 06:12 PM 8/29/2004 -0500, you wrote:
>
> >--> AeroElectric-List message posted by: "David Carter"
> ><dcarter@datarecall.net>
> >
> >Ken, comments and agreement embedded below.
> >
> >David
> >
> >----- Original Message -----
> >From: "Ken" <klehman@albedo.net>
> >To: <aeroelectric-list@matronics.com>
> >Subject: Re: AeroElectric-List: OV protection for PM alternators on
juliet
> >
> >
> > > --> AeroElectric-List message posted by: Ken <klehman@albedo.net>
> > >
> > > Hi David
> > >
> > > While it seemed like a good idea to fuse the wires from the PM
> > > alternator I don't think that accomplishes anything. If the fuse(s)
can
> > > handle max alternator output then they likely won't pop if the
regulator
> > > develops a short.
> >
> >........Agree
>
> Alternators never pop their own fuses. Note that the fusible link
> is at the BUS END of the feeder. The fusible link protects the
> feeder from current that comes from the BATTERY . . . not the
alternator.
>
>
> > > A fuse on the output of the VR would protect the VR
> > > from excessive battery sourced current though in the event of a VR
> > > short.
> >
> >.........Z-13 already has a fuselink (16awg wire in a 12 awg main
> >alternator-to-battery circuit) that does what you want - no need to add
> >anything, i.e., if VR fried and shorted, and there was no longer any
output
> >from "main output" terminal of VR, and output from PM alternator could
not
> >get out of the VR box, and if the postulated short existed in the VR box,
> >then there would be a massive short from the battery to that new
"unplanned"
> >ground - & the fuselink would do its job and melt.
> >
> > > That is why I was musing that it might be better to put the OV
> > > disconnect relay on the alternator output wires.
>
> This would work fine too . . .
>
>
> >........I think we agree that we can't see a need for putting anything,
> >especially the OV system, between PM alternator & regulator.
> >
> > > I still don't know if a
> > > VR short is in fact a significant risk on a John Deere VR though...
> >
> >...........as noted above, we are covered, regardless of risk.
>
> Put the relay where ever it suits you to disconnect the alternator
> in the event of regulator failure.
>
> Bob . . .
>
>
> ---
>
>
> ________________________________ Message 16
____________________________________
>
>
> Time: 07:55:51 PM PST US
> From: "Robert L. Nuckolls, III" <b.nuckolls@cox.net>
> Subject: Re: AeroElectric-List: SCR for a Hobbs meter
>
> --> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
<b.nuckolls@cox.net>
>
> At 04:14 PM 8/29/2004 -0500, you wrote:
>
> >--> AeroElectric-List message posted by: Tom Brusehaver
<cozytom@mn.rr.com>
> >
> >
> >I'm finishing a canard aircraft, and am about to hook up
> >the hobbs meter. Electric tach, so I don't have another
> >hour meter.
> >
> >I don't like the extra oil pressure lines, Tee's and
> >wiring. Seems like one more place to have a leak
> >and more stuff to put in the back of the plane.
>
> These have been pretty trouble free and the price
> is right.
>
>
> >I am thinking of using an SCR to trigger the start of
> >the Hobbs meter. The trigger would be the starter switch.
> >Simple, light weight, and relable.
> >
> >It does risk leaving the master switch on, and having
> >a few extra hours added to the time. Hopefully I'll
> >actually use a shutdown checklist everytime, and that
> >won't happen.
>
> It's pretty easy to build an "engine running" detector
> for your tach signal line that will run the Hobbs only
> while the engine is rotating above a certain speed.
>
> Bob . . .
>
>
> ---
>
>
> ________________________________ Message 17
____________________________________
>
>
> Time: 08:00:12 PM PST US
> From: Ken <klehman@albedo.net>
> Subject: Re: AeroElectric-List: OV protection for PM alternators
> on juliet
>
> --> AeroElectric-List message posted by: Ken <klehman@albedo.net>
>
> David
>
> Actually I don't think we are seeing the same thing here.
>
> Unless someone sees a problem with it, I am indeed going to put the OV
> relay disconnect contacts between the alternator and the regulator. That
> would enable me to manually stop the current flow from the alternator to
> the Regulator if I should notice that the John Deere regulator above my
> right foot is smoking. The Z-13 fuselink might already be melted at that
> point due to a VR problem and I'm postulating that it makes sense to
> insure that the alternator can't still feed 20 amps into the failed and
> smoking regulator.
>
> In fact with our discussion I now realize that since I've use a circuit
> breaker instead of the Z-13 fuselink I can also pull that to manually
> disconnect the battery from the VR if it doesn't pop by itself so I
> think this is an improvement.
>
> Ken
>
> >.........Z-13 already has a fuselink (16awg wire in a 12 awg main
> >alternator-to-battery circuit) that does what you want - no need to add
> >anything, i.e., if VR fried and shorted, and there was no longer any
output
> >from "main output" terminal of VR, and output from PM alternator could
not
> >get out of the VR box, and if the postulated short existed in the VR box,
> >then there would be a massive short from the battery to that new
"unplanned"
> >ground - & the fuselink would do its job and melt.
> >
> >
> >
> >> That is why I was musing that it might be better to put the OV
> >>disconnect relay on the alternator output wires.
> >>
> >>
> >
> >........I think we agree that we can't see a need for putting anything,
> >especially the OV system, between PM alternator & regulator.
> >
> >
> >
> >>I still don't know if a
> >>VR short is in fact a significant risk on a John Deere VR though...
> >>
> >>
> >
> >...........as noted above, we are covered, regardless of risk.
> >
> >
>
>
> ________________________________ Message 18
____________________________________
>
>
> Time: 09:10:58 PM PST US
> From: "David Carter" <dcarter@datarecall.net>
> Subject: Re: AeroElectric-List: Posting dwg drawings or pdf images to a
website
> for other builders to view
>
> --> AeroElectric-List message posted by: "David Carter"
<dcarter@datarecall.net>
>
> Jon Finley & Cy Galley,
>
> Thanks for the excellent tips. Just what I needed. I'll digest this
stuff
> tomorrow and mod my website until it works.
>
> David
>
> ----- Original Message -----
> From: "cgalley" <cgalley@qcbc.org>
> <dcarter@datarecall.net>
> Subject: Re: AeroElectric-List: Posting dwg drawings or pdf images to a
> website for other builders to view
>
>
> > --> AeroElectric-List message posted by: "cgalley" <cgalley@qcbc.org>
> >
> > I use PDFs all the time for forms on www.qcbc.org. Click on the left
hand
> > Heartland Century link. You do have to have adobe Acrobat reader
> installed
> > to see a PDF. The newsletter link has a link to Adobe's site to get the
> free
> > reader.
> >
> > As the reader has to load before display of the PDF, it takes a while
and
> > sometime you might think it isn't working because ot the time lag.
> >
> > Cy Galley - Webmaster www.qcbc.org
> >
> > ----- Original Message -----
> > From: "David Carter" <dcarter@datarecall.net>
> > To: "aeroelectric-list" <aeroelectric-list@matronics.com>
> > Subject: AeroElectric-List: Posting dwg drawings or pdf images to a
> website
> > for other builders to view
> >
> >
> > > --> AeroElectric-List message posted by: "David Carter"
> > <dcarter@datarecall.net>
> > >
> > > I have an unsophisticated website and am trying to learn how to add
> stuff
> > to
> > > it. I can post .jpg stuff OK. Today, I tried posting a .dwg file (my
> mod
> > > to Z-13) - it wouldn't open with Autocad (actually, Intellicad clone
of
> > > Autocad). Converted to .pdf and uploaded - still won't display. I
> think
> > I
> > > don't have the source coding for that image correct in my "Builder's
> Log".
> > > My website url for that page is
> > > http://www.datarecall.net/~dcarter/Builder's%20Log.html
> > > - Anyone have either of these type images posted - I'd like to go
> to
> > > your site and "copy source" and see how you do it.
> > >
> > > David
> > >
> > >
> >
> >
>
>
> ________________________________ Message 19
____________________________________
>
>
> Time: 11:04:56 PM PST US
> From: "Fergus Kyle" <VE3LVO@rac.ca>
> Subject: AeroElectric-List: RG
>
> --> AeroElectric-List message posted by: "Fergus Kyle" <VE3LVO@rac.ca>
>
> Time: 08:10:39 PM PST US
> From: "Dan Checkoway" <dan@rvproject.com>
> Subject: Re: AeroElectric-List: BNC Connector
>
> --> AeroElectric-List message posted by: "Dan Checkoway"
<dan@rvproject.com>
> > PPS: Extra credit goes to the first student who posts what the letters
RG
> stand for on the coax cable used with these connectors.
> Ooh, me, me, me, me! (hand raised)
> RG=Radio Guide
> (dogpile toolbar is cool)
> do not archive
> )_( Dan
>
> damn
>
> Ferg
> do not archive
>
>
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Watts conversion |
--> AeroElectric-List message posted by: "Ron Koyich" <Ron@Koyich.com>
How about 4A, Jon.
For DC, resistive circuits:
Power = Voltage x Current (P=EI)
Therefore,
Current = Power/Voltage (I=P/E)
65/13.2 = 4.0123456....etc Amperes
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Watts conversion |
--> AeroElectric-List message posted by: Steven Fingerhut <beechboy@nctv.com>
Hello Jon. I see nobody has answered your question yet and i know when i ask
a question sometimes I really wanna know NOW. So since it is a simple
question here's the simple answer. Watts are volts X amps. So if they said
it was 65 watts at 13.2 volts it would be right at 5 amps. Make sure that it
said "65 watts at 13.2 volts.
Steve
> From: "Jon Finley" <jon@finleyweb.net>
> Reply-To: aeroelectric-list@matronics.com
> Date: Sun, 5 Sep 2004 19:31:40 -0500
> To: <aeroelectric-list@matronics.com>
> Subject: AeroElectric-List: Watts conversion
>
> --> AeroElectric-List message posted by: "Jon Finley" <jon@finleyweb.net>
>
> Hi all,
>
> I have purchased a really slick little wireless color video camera. I
> intend to mount this camera on my airframe in various places for both
> enjoyment and drag reduction efforts (I have found it REALLY hard to see
> the belly of the airplane while flying!). I need to carry a little 13"
> tv/vcr combo in the airplane to record the video. So, the question:
>
> The tv/vcr unit states that it consumes 65 watts at 13.2 volts. If I
> understand this correctly, the unit will be consuming about 6.5 amps (at
> 13.2 volts). Is this correct?
>
> Just wanted to confirm before I plug it into my plane and smoke the
> electrical system....
>
> Thanks much!
>
> Jon Finley
> N90MG Q2 - Subaru EJ-22 DD - 465 Hrs. TT
> Apple Valley, Minnesota
> http://www.FinleyWeb.net/Q2Subaru
>
>
>
>
>
>
>
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Cleveland Crimp Tool Mystery Solved .NOT . |
--> AeroElectric-List message posted by: "DAVID REEL" <dreel@cox.net>
Concerning the insulation grip of the asymetrical die tools, I went back to the
dial caliper and measured the minimum die opening on the insulation grip side.
Here's the results:
Loose grip Cleveland tool: .159
Replacement tight grip tool: .149
Ideal crimper with 30-579 die .125
Looks like the Cleveland tool's insulation grip on the 22awg wire is somewhat loose
compared to the ideal dies. I'm real curious what the minimum gaps are on
your $600 AMP crimper Bob.
Dave Reel
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Watts conversion |
--> AeroElectric-List message posted by: Brian Lloyd <brianl@lloyd.com>
On Sep 5, 2004, at 8:31 PM, Jon Finley wrote:
> --> AeroElectric-List message posted by: "Jon Finley"
> <jon@finleyweb.net>
> The tv/vcr unit states that it consumes 65 watts at 13.2 volts. If I
> understand this correctly, the unit will be consuming about 6.5 amps
> (at
> 13.2 volts). Is this correct?
Yes.
Brian Lloyd 6501 Red Hook Plaza
brianl@lloyd.com Suite 201
+1.340.998.9447 St. Thomas, VI 00802
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|