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Mark Sletten
Joined: 10 Jan 2006
Posts: 43
Location: St. Jacob, IL (Near St. Louis, MO)
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 Posted: Sat Feb 12, 2011 10:51 am Post subject: ALTRAK Dimmer Circuit |
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I’m installing a dimmer circuit for an Altrak module per the manual (see attachment). The manual calls for a 6.8k Ohm resistor between the lamp and J1, PIN 1. I was unable to find a 6.8k Ohm resistor locally, so on the advice of a Trutrak tech I used a 5k Ohm resistor instead.
The dimmer I’m using (http://www.periheliondesign.com/egpavr.htm) utilizes an LM317T Integrated Circuit voltage regulator. I have several other instrument lights connected to this device and they all operate properly. As currently wired, the Altrak lamp does not dim until I reach the very end of the control movement on the dimmer, when all the other lamps connected to it are already off. The Altrak lamp goes from full on to full off in the last 5% (approx) of the dimmer’s control movement.
It seems I should be able to add another resistor between the dimmer and the 470 Ohm resistor already installed, but I’m not sure what range to use. Any advice would be appreciated!
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_________________
Mark Sletten
Legacy FG N828LM
http://www.legacyfgbuilder.com |
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Mark Sletten
Joined: 10 Jan 2006
Posts: 43
Location: St. Jacob, IL (Near St. Louis, MO)
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| Posted: Sun Feb 13, 2011 7:18 am Post subject: Re: ALTRAK Dimmer Circuit |
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Gang,
Nothing heard from the list. As an aside, I tried contacting Trutrak, but according to the person I spoke, with the only tech who can answer my question only corresponds via email. His response to my query seemed to indicate he either didn't carefully read it, or he misunderstood it. I requested he call me to clarify, but so far no joy.
Any help from the experts here would be greatly appreciated!
| | - 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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_________________
Mark Sletten
Legacy FG N828LM
http://www.legacyfgbuilder.com |
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