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nuckolls.bob(at)aeroelect
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 Posted: Wed Sep 08, 2010 8:41 am Post subject: warning lamp for LR3C regulators (CORRECTION) |
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At 06:24 AM 9/8/2010, you wrote:
| Quote: | Hey there Bob and all,
I contacted B&C to ask whether the incandescent warning lamp (on pin 5) for the LR3C regulator could be replaced by an LED. They responded that it could be in the 14V version but that I would have to check with Bob about the 28V version. Is there any polarity that would need to be observed in the connection? |
Yes, both polarity AND resistors are important. See:
http://aeroelectric.com/Pictures/Schematics/LR3_LV_Led_1.jpg
For 14v, 470 ohm resistors suffice. For 28v raise resistors
to 1000 ohms. If the light is too bright, increase value of
resistor in series with the lamp until desired brightness
is attained. But for a warning light, you probably want to
let it run "flat out".
Bob . . . [quote][b]
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dsvs(at)ca.rr.com
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| Posted: Wed Sep 08, 2010 7:03 pm Post subject: warning lamp for LR3C regulators (CORRECTION) |
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Bob,
I asked the same question at the end of July and the diagram you put out at that time said two 230 ohm resistors for 14 volt. I built the system that way and it works fine. I have not run the engine so I have not seen full voltage yet. Is the righer resistance needed for the higher voltage ? Just wondering and wanting to better understand my electrical system. Thanks. Don
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III
Sent: Wednesday, September 08, 2010 9:37 AM
To: aeroelectric-list(at)matronics.com
Subject: Re: warning lamp for LR3C regulators (CORRECTION)
At 06:24 AM 9/8/2010, you wrote:
Hey there Bob and all,
I contacted B&C to ask whether the incandescent warning lamp (on pin 5) for the LR3C regulator could be replaced by an LED. They responded that it could be in the 14V version but that I would have to check with Bob about the 28V version. Is there any polarity that would need to be observed in the connection?
Yes, both polarity AND resistors are important. See:
http://aeroelectric.com/Pictures/Schematics/LR3_LV_Led_1.jpg
For 14v, 470 ohm resistors suffice. For 28v raise resistors
to 1000 ohms. If the light is too bright, increase value of
resistor in series with the lamp until desired brightness
is attained. But for a warning light, you probably want to
let it run "flat out".
Bob . . . | Quote: | | http://www.matronics.com/Navigator?AeroElectric-List |
0123456789
[quote][b]
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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