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Re: Gear position indicator lights

Subject: Re: Gear position indicator lights
From: europabuilder@ntlworld.com
Date: Wed, 3 Apr 2002 22:59:24

> To all those folks out there that are smarter than I when it comes to
> electronics here is my question.  Does anyone know of either a kit/design
> or an off the shelf item that will limit the time the gear position
> indicator lights stay on.  I have installed limit switches on the
> outriggers that verify gear position via LEDs.  What I am looking for is
> a circuit that will turn off the LED after the gear has been successfully
> raised say 1 minute after the LED is lighted.  I really don't want to see
> two bright LED during the entire flight.
>
> Regards,
>
> Erich Trombley
> A028

p.s. it can also be done with (make sure you're viewing with a fixed fone,
like courier) :-

   +12V
    |
    |    +-------+
    o    o       |
     \          +++
      \         | |
      o         | |  Resistor
      |         +++
 Cap ---         |
     ---         _
      |          V   LED
      |          |
     ______________
           GND

But 1 minute will start to need a big capacitor... have a play about and see
what you come up with.


Cheers,
Mark.

________________________________
Mark Jackson - +44 (0)7050 645590
europa-builder@ntlworld.com
http://harley.pcl.ox.ac.uk/~mark/Europa



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