Today's Message Index:
----------------------
1. 05:54 AM - Re: KMD 150 (Robert L. Nuckolls, III)
2. 05:57 AM - Re: KMD 150 (Robert L. Nuckolls, III)
3. 06:22 AM - Re: PWM Signal to 0-5v Voltage Converter (Mark Steitle)
4. 04:45 PM - Re: AeroElectric-List Digest: 3 Msgs - 07/19/04 (Eric M. Jones)
5. 04:45 PM - Re: AeroElectric-List Digest: 8 Msgs - 07/21/04 (Eric M. Jones)
6. 04:45 PM - Re: My Visio 2000 Stencil (Tom Brusehaver)
7. 04:45 PM - Re: AeroElectric-List Digest: 11 Msgs - 07/20/04 (Eric M. Jones)
8. 04:45 PM - Re: AeroElectric-List Digest: 3 Msgs - 07/23/04 (Eric M. Jones)
9. 04:45 PM - Re: AeroElectric-List Digest: 15 Msgs - 07/22/04 (Eric M. Jones)
10. 04:45 PM - Re: AeroElectric-List Digest: 4 Msgs - 07/24/04 (Eric M. Jones)
11. 04:45 PM - Re: AeroElectric-List Digest: 9 Msgs - 07/25/04 (Eric M. Jones)
Message 1
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <rnuckolls@aeroelectric.com>
At 09:04 PM 7/23/2004 -0700, you wrote:
>--> AeroElectric-List message posted by: "Mickey Billings" <mbilli@cox.net>
>
>Does anyone know if I can use a fair DC power supply in the airplane to
>power my KMD 150 GPS without damaging the GPS in order to spend some time
>learning some of it's features? The power supply I have is 12v DC with no
>other adjustments. I am however willing to purchase another unit if necessary.
>
>Many Thanks
>
>Mickey Billings RV&
Your description of "12v DC with no other adjustments" is not very
illuminating. This can describe a lot of different products. What
you're looking for is a regulated bench supply that may or may not
be adjustable. It's also desirable that it have very little noise
from the ac mains rectifiers but this happens automatically in the
regulation process.
The keywords are "regulated" "power supply" and you can toss in
"13.8" for a narrower search on suitable devices. Radio shack
sells several models of fixed output supplies adjusted for
13.8 volts to emulate vehicular DC power sources. Your
radio would run fine on either of these two offerings on Ebay.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=48708&item=5710800322&rd=1&ssPageName=WDVW
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=58286&item=3829308370&rd=1&ssPageName=WDVW\
If you wanted a bit more versatility in a bench supply, consider
something like this:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=58286&item=3830084207&rd=1
This is adjustable over the range of 0-30 volts and has
adjustable current limiting and digital meters to display
output voltage and load current. We have perhaps a half dozen
power supplies of this genre' on our workbench.
Bob . . .
---
Message 2
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <rnuckolls@aeroelectric.com>
At 06:07 PM 7/25/2004 -0600, you wrote:
>--> AeroElectric-List message posted by: larry <larry@grrok.com>
>
>This way you know that your are supplying clean power to the unit.
Keep in mind that radios properly designed for operation
with vehicular DC power sources get anything but "clean"
power. Alternator have very trashy output. The biggest
risk to equipment when using power supplies of unknown
quantity is over voltage. Some simple supplies might be
"rated" for 13 volts at full load but soar to 19 volts or
more lightly loaded. Getting a regulated supply eliminates
this risk. Beyond that, power supply selection is more
a matter of deciding how much utility you'd like to have
from the supply for tasks other than running a GPS
receiver in the "home learning" mode.
Bob . . .
---
Message 3
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| Subject: | Re: PWM Signal to 0-5v Voltage Converter |
--> AeroElectric-List message posted by: Mark Steitle <msteitle@mail.utexas.edu>
Jerzy,
Well, turns out that Trampas was right when he advised that the EI
capacitor probe puts out a signal that could be read by the BMA EFIS-1. It
has the ability to read both low and high frequencies. I had tried the low
frequency and wasn't able to get it to work and abandoned the idea. Last
weekend I tried the high frequency channel and it worked like a champ. The
side benefit to this is that it saves two of the three voltage channels for
monitoring battery or buss voltage. So, as it turns out, it was as simple
as connecting the white output from the EI probe to the correct d-sub pin
for the high-frequency channel input and then do the calibration.
Appreciate your help and advice none the less.
Thanks,
Mark S.
> >>>
> >>>>--> AeroElectric-List message posted by: "Trampas" <tstern@nc.rr.com>
> >>>>
> >>>>Mark,
> >>>>
> >>>>My understanding is that the EI probes output a 5V frequency signal
> which is
> >>>>around 2Khz and the frequency varies with the fuel level. I think BMA can
> >>>>accept a frequency input to their device, thus making the interfacing
> simple
> >>>>as hooking it up.
> >>>>
> >>>>Regards,
> >>>>Trampas Stern
> >>>>
> >>>>
> >>>>-----Original Message-----
> >>>>From: owner-aeroelectric-list-server@matronics.com
> >>>>[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Mark
> >>>>Steitle
> >>>>To: aeroelectric-list@matronics.com
> >>>>Subject: AeroElectric-List: PWM Signal to 0-5v Voltage Converter
> >>>>
> >>>>--> AeroElectric-List message posted by: Mark Steitle
> >>>><msteitle@mail.utexas.edu>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>Does anyone know where I can get a converter that takes a 5v pwm signal
> >>>>>and converts it to 0-5v output. The purpose is to convert the output
> >>>>>signal from my Electronics Int'l. capacitive fuel probes to a signal
> that
> >>>>>my BMA EFIS can understand. I figure there ought to be a simple circuit
> >>>>>somewhere that will do this, but I haven't been able to find it. I feel
> >>>>>confident that I could assemble such a device, but its beyond me to
> design
> >>>>>such a circuit from scratch.
> >>>>>
> >>>>>Thanks,
> >>>>>Mark S.
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
>
>
Message 4
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| Subject: | Re: AeroElectric-List Digest: 3 Msgs - 07/19/04 |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
I will be out of touch until July 27. Leave a message and I will reply
later.
Thanks,
Eric M. Jones
Message 5
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| Subject: | Re: AeroElectric-List Digest: 8 Msgs - 07/21/04 |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
I will be out of touch until July 27. Leave a message and I will reply
later.
Thanks,
Eric M. Jones
Message 6
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| Subject: | Re: My Visio 2000 Stencil |
--> AeroElectric-List message posted by: Tom Brusehaver <cozytom@mn.rr.com>
I used to always recoment xfig (www.xfig.org), bacause that is what I use.
I have used Dia for a couple little drawings, and it works pretty good.
It;ll read DXFs too!
There is a Dia for windows, try http://dia-installer.sourceforge.net/
Of course it is best to get the source and compile it yourself.
Linux, and other Unix's it pretty much compiles right out of the box.
http://www.gnome.org/gnome-office/dia.shtml
On Sun, 25 Jul 2004 21:21:47 -0400, Chad Robinson <crj@lucubration.com>
wrote:
> --> AeroElectric-List message posted by: Chad Robinson
> <crj@lucubration.com>
>
> Dave wrote:
>> --> AeroElectric-List message posted by: "Dave" <dave@bestnetpc.com>
>>
>> Chad, This sounds interesting but I can only find a "pay for
>> subscription"
>> link for Visio 2000-2003. Is there a free program anywhere? I've looked
>> at
>> www.downloads.com but there's so many to choose from. A few have a free
>> try, $300 to buy download but that would be annoying. Any info?
>
> Visio is indeed a commercial product currently sold by Microsoft. It's
> one of
> their better products, actually - they didn't write it, they purchased
> it from
> the original makers (Visio the company) because it was the best
> flowcharting
> product on the market and they wanted in.
>
> There is a 30-day evaluation for the product at:
> http://office.microsoft.com/home/office.aspx?assetid=FX01085798
> (click Trial Version).
>
> Visio Standard costs $200. You can get older versions on eBay for less
> than
> half that (I saw some quotes as low as $60) but be sure you're buying a
> legitimate version. Standard Edition is almost certainly all you need.
>
> Regards,
> Chad
>
>
Message 7
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| Subject: | Re: AeroElectric-List Digest: 11 Msgs - 07/20/04 |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
I will be out of touch until July 27. Leave a message and I will reply
later.
Thanks,
Eric M. Jones
Message 8
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| Subject: | Re: AeroElectric-List Digest: 3 Msgs - 07/23/04 |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
I will be out of touch until July 27. Leave a message and I will reply
later.
Thanks,
Eric M. Jones
Message 9
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| Subject: | Re: AeroElectric-List Digest: 15 Msgs - 07/22/04 |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
I will be out of touch until July 27. Leave a message and I will reply
later.
Thanks,
Eric M. Jones
Message 10
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| Subject: | Re: AeroElectric-List Digest: 4 Msgs - 07/24/04 |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
I will be out of touch until July 27. Leave a message and I will reply
later.
Thanks,
Eric M. Jones
Message 11
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| Subject: | Re: AeroElectric-List Digest: 9 Msgs - 07/25/04 |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
I will be out of touch until July 27. Leave a message and I will reply
later.
Thanks,
Eric M. Jones
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