Today's Message Index:
----------------------
1. 05:37 AM - Re: RV-List: Wig Wag (Bill VonDane)
2. 07:09 AM - Re: Re: RV-List: Wig Wag (Robert L. Nuckolls, III)
3. 07:50 AM - Re: questions (Robert L. Nuckolls, III)
4. 09:09 AM - Re: Re: RV-List: Wig Wag (rv-9a-online)
5. 09:25 AM - Re: solid state relays (Phil Birkelbach)
Message 1
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| Subject: | Re: RV-List: Wig Wag |
--> AeroElectric-List message posted by: "Bill VonDane" <bill@vondane.com>
I have come up with 4 different ways to do this with my wig-wag unit, which
has the same pinout as 'Lectric Bob's... You can check out my installation
instructions, which contain the wiring diagrams, here:
www.creativair.com/source/_inst/exfla.pdf
I sell either just the flasher, or kits with switches and connectors:
www.creativair.com
...or you can source your own parts and roll your own...
-Bill VonDane
bill@vondane.com
RV-8A ~ Colorado Springs
www.rv8a.com
----- Original Message -----
From: "DEAN PSIROPOULOS" <dean.psiropoulos@verizon.net>
Subject: RV-List: Wig Wag
--> RV-List message posted by: "DEAN PSIROPOULOS"
<dean.psiropoulos@verizon.net>
Len/listers:
I have a schematic for this type of flasher, it basically does the same
thing as the wig wag but without all the frills(turn it on and it
alternately flashes your two landing lights, that's all). The design is
very simple and uses basically 4 solid state components that I purchased
through Digi Key for less than 10 dollars! I didn't design the circuit but
the designer is a Lancair builder who published it in one of the electronic
trade magazines. He was more than happy to answer my question about using
100 watt aviation lights with it instead of his 50 watt car halogens (it's
plenty robust to operate at the higher currents needed for the aviation
lights). Since the schematic is public knowledge I'm happy to share it with
anyone who is interested in rolling their own wig wag. Just contact me off
list and I'll email you a scanned version of the schematic and the basic
circuit description.
Note: you need to have some basic knowledge of reading electronic schematics
to be able to do this, but this is a simple circuit that could even be built
on a radio schack perfboard if you really wanted to save money. Not for HID
lights (thier ballasts don't like being switched on and off that fast and...
if you have these really bright lights chances are you'll be seen, even in
the daytime, if you have them on)!
Dean Psiropoulos
RV-6A N197DM
Light at the end of the tunnel getting briter.
-----------------------------------------------Original
message-------------------------------------
>Lenleg@aol.com wrote:
>RV-List message posted by: Lenleg@aol.com
>Anybody give me the contact info for Bob Haan ... producer of the Wig
>Wag????
>Thanks !!
>Len Leggette, RV-8A
>Greensboro, NC N910LL
>315 hrs
Message 2
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| Subject: | Re: RV-List: Wig Wag |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <b.nuckolls@cox.net>
At 06:35 AM 2/3/2005 -0700, you wrote:
>--> AeroElectric-List message posted by: "Bill VonDane" <bill@vondane.com>
>
>I have come up with 4 different ways to do this with my wig-wag unit, which
>has the same pinout as 'Lectric Bob's... You can check out my installation
>instructions, which contain the wiring diagrams, here:
>www.creativair.com/source/_inst/exfla.pdf
>
>I sell either just the flasher, or kits with switches and connectors:
>www.creativair.com
>
>...or you can source your own parts and roll your own...
Nicely done Bill. Welcome to the fraternity of suppliers
to the only growing segment of general aviation. If you've
done a DIY article on this, I'd be pleased to post it on
aeroelectric.com
Bob . . .
Message 3
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com>
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 09:23 AM 2/1/2005 -0500, you wrote:
>Good morning Bob,
>
>I took a liberty here and re-sending you the below e-mail as to you might
>not received last month. It would be great if you could write me your
>opinion and suggestions.
>
>Thanks a lot in advance,
>Garry V. Laznicka
>------------------------------------
>Bob,
>Thank you for your note and offer. I looked at the Appendix Z closely and
>what I'd like to adapt is the Figure Z-11 with these below modifications
>to get it to my comfort. I know that your teaching differs, but if this
>will damage nothing it should be acceptable. Regardless your comments are
>appreciated. First I have these questions:
Your changes are not major concern for functionality. I've
seen some very complex, ill conceived systems where a whole
bunch of things WORKED exactly as intended. The goal of this
or any other exercise using the AeroElectric Connection philosophy
is to do no more than is necessary to mitigate all anticipated
failures, to minimize parts count and $time$ to fabricate and
install, and minimize the amount of thinking the pilot is expected
to accomplish while things are not going right in the air.
This is what the Z-figures are all about.
>Considered modifications:
>
>1.) The essential bus has only 7A fuse (breaker) coming of off battery bus
>and going to essential switch. But essential bus totals over 30A. Is this
>correct Amp rating?
All circuit protection needs to be adjusted for the final
design . . . keep in mind that the z-figures describe ARCHITECTURE
and do not purport to size wires and circuit protection or suggest
any particular compliment of electrical equipment.
Having said that, you have way too much load on the endurance bus.
The e-bus is intended to give you a high=reliability power source
for items needed to get airport of intended destination in sight
while making fuel aboard and not battery capacity drive the
ultimate limit to duration of flight.
>2.) Should not the essential bus' fuse be a current limiter rated at
>ANL-40A; and essential bus' switch rated at 40A as well?
No, if you truly intend to load up the e-bus like this, then
you need to adapt the e-bus alternate feed to include a
mini-battery contactor at the battery bus as illustrated
in:
http://www.aeroelectric.com/Pictures/E-BusFatFeed.gif
Keep in mind also that the normal feedpath diode will
need to be upsized and heat-sinked . . .
>3.) Should there be a current limiter (ANL-40A or other Amp) on line from
>main bus (or to avionic contactor - see A. below) to rectifier diode?
>
>4.) I feel it might be better to use both input connectors with two wires
>(and one from(+)output as you have it) on rectifier diode for essential
>bus line to essential bus. Basically, two wires from maim bus (or two
>wires from avionic contactor - see A. below) to rectifier diode, and one
>from diode to essential bus, this for 50A rating?
Doesn't work that way. You really need to rethink the operational
philosophy of the e-bus and trim the en route running loads of
on the bus down to something on the order of 3-5 amps max.
>My modifications:
>
>A.) I installed the Avionic master contactor (and switch) in series with
>the rectifier diode for essential bus.
>B.) BAT and ALT to be powered with two separate switches.
Pleased don't do this. The management of battery and alternator controls
has been discussed more than ANY other topic and the discussions are
not over yet. It's generally agreed that being able to switch the
battery OFF while still having an alternator on-line is an invitation
to easily avoidable grief and $time$.
>C.) Will use the conventional key OFF/L/R/BOTH/START switch for magnetos
>and starter contactor
Ugh! . . . but it WILL function.
>D.) Will have firewall ground bus (2pcs unit from B&C) then braded wire
>(engine side) to ENG. On the other side (cabin side) braded wire to
>battery (-) but with one more ground bus mounted in series at the
>instrument panel proximity similar to the figure Z-14, basically I will
>have 3 ground busses in series.
You should have PLENTY of grounds . . . in fact, this sounds
like you're making this too complex. What kind of airplane/engine
combination are we discussing?
>E.) Alternator N.D.12V/65A with disconnected internal volt regulator and
>will use B&C's LR3 volt reg.
>F.) I installed current limiter ANL-80A on line (8AWG) from battery
>contactor to main bus.
Why?
>G.) For starter contactor I elected the Spruce's #22735 unit due to
>mounting/space considerations.
It's about the same size as all the other starter contactors
and probably will do fine.
>Bob you comments on all these pints is very welcome.
>Regards,
>Garry
If your endurance loads are truly as large as you've suggested,
then dual alternators are suggested. My earlier recommendation
that you join the AeroElectric List to discuss this an other
issues is important. It appears to me that you're driving off
onto some tangents based on worries based on mis-conceptions
or poor science. It doesn't have to be this tough. Get on the
list where I and others will help you sort all this out. I simply
don't have the time to do this in a one-on-one environment.
Bob . . .
Message 4
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| Subject: | Re: RV-List: Wig Wag |
--> AeroElectric-List message posted by: rv-9a-online <rv-9a-online@telus.net>
Bill and Bob, here is yet another method of wiring the wig-wag
flashers. Similar to Bill's option 4, it uses 1-3 (SPDT) switches
only... and the main lamp connections only go through one switch, which
should be slightly more reliable. I know Bob looked at this option in
the distant past.
http://www3.telus.net/aviation/flying/RV-9A/photos/Electrical/wigwag
Complete electrical system schematic is at
http://www3.telus.net/aviation/flying/RV-9A/rv-9a
Follow the links at the top of the page.
Vern Little
Bill VonDane wrote:
>--> AeroElectric-List message posted by: "Bill VonDane" <bill@vondane.com>
>
>I have come up with 4 different ways to do this with my wig-wag unit, which
>has the same pinout as 'Lectric Bob's... You can check out my installation
>instructions, which contain the wiring diagrams, here:
>www.creativair.com/source/_inst/exfla.pdf
>
>I sell either just the flasher, or kits with switches and connectors:
>www.creativair.com
>
>...or you can source your own parts and roll your own...
>
>-Bill VonDane
>bill@vondane.com
>RV-8A ~ Colorado Springs
>www.rv8a.com
>
>
>----- Original Message -----
>From: "DEAN PSIROPOULOS" <dean.psiropoulos@verizon.net>
>To: <rv-list@matronics.com>; <aeroelectric-list@matronics.com>
>Subject: RV-List: Wig Wag
>
>
>--> RV-List message posted by: "DEAN PSIROPOULOS"
><dean.psiropoulos@verizon.net>
>
>Len/listers:
>
>I have a schematic for this type of flasher, it basically does the same
>thing as the wig wag but without all the frills(turn it on and it
>alternately flashes your two landing lights, that's all). The design is
>very simple and uses basically 4 solid state components that I purchased
>through Digi Key for less than 10 dollars! I didn't design the circuit but
>the designer is a Lancair builder who published it in one of the electronic
>trade magazines. He was more than happy to answer my question about using
>100 watt aviation lights with it instead of his 50 watt car halogens (it's
>plenty robust to operate at the higher currents needed for the aviation
>lights). Since the schematic is public knowledge I'm happy to share it with
>anyone who is interested in rolling their own wig wag. Just contact me off
>list and I'll email you a scanned version of the schematic and the basic
>circuit description.
>
>Note: you need to have some basic knowledge of reading electronic schematics
>to be able to do this, but this is a simple circuit that could even be built
>on a radio schack perfboard if you really wanted to save money. Not for HID
>lights (thier ballasts don't like being switched on and off that fast and...
>if you have these really bright lights chances are you'll be seen, even in
>the daytime, if you have them on)!
>
>Dean Psiropoulos
>RV-6A N197DM
>Light at the end of the tunnel getting briter.
>
>-----------------------------------------------Original
>message-------------------------------------
>
>
>>Lenleg@aol.com wrote:
>>RV-List message posted by: Lenleg@aol.com
>>
>>
>
>
>
>>Anybody give me the contact info for Bob Haan ... producer of the Wig
>>Wag????
>>Thanks !!
>>
>>
>
>
>
>>Len Leggette, RV-8A
>>Greensboro, NC N910LL
>>315 hrs
>>
>>
>
>
>
>
Message 5
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| Subject: | Re: solid state relays |
--> AeroElectric-List message posted by: Phil Birkelbach <phil@petrasoft.net>
Do a google search for Solid State H-Bridge, and check out the robot
hobby sites. I've found some of these things for other projects and up
to 3 Amps is pretty easy and I am sure that you can scale them up to 7
or more amps. It's a pretty simple thing to build an H-bridge out of 4
SSR's. Not cheap but easy.
Phil
D Fritz wrote:
>--> AeroElectric-List message posted by: D Fritz <dfritzj@yahoo.com>
>
>Question for the group: anyone know of a source of SS relays that work up to
about 7 Amp and work in a SPDT fashion? Does such a beast exist? All I seem
to find out there are SSRs that work as SPST. I'm working on a roll your own
trim relay deck.
>
>Thanks,
>Dan Fritz
>
>
>
>---------------------------------
>
>
>
>
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