[NJARC] A slightly off-topic request

[Richard Knapp]

Dave

I may not fully understand the whole picture however try Home Depot as they
for one sell the remote wireless switches for ceiling fans and lights.  So
it can switch any voltage like you're 24 VAC thermostat line.

Dick Knapp, K2AIA



-----Original Message-----
From: njarc-bounces at mailman.qth.net [mailto:njarc-bounces at mailman.qth.net]
On Behalf Of Dave Sica
Sent: Tuesday, April 03, 2007 11:58 PM
To: njarc at mailman.qth.net
Subject: [NJARC] A slightly off-topic request

Visit our web site - See http://www.njarc.org
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I am putting together a remote control circuit for use at our church to
switch the air conditioner thermostat on and off. I salvaged circuitry
from a defunct DVD player which will provide me with +5 and -5 volts DC
pulses as required. Now I need to make this control a relay that will
latch on with the +5 volt pulse, then latch off when hit with the -5 volt
pulse. 

Then it hit me: I could probably design a circuit to do that using vacuum
tubes, but that doesn't really seem like the right solution here ;-)

So I figured I'd toss this out to the *real* engineers out there. My
grasp of solid state is kinda weak, so although I could probably muddle
through this in time, I figure something like this must be the proverbial
piece of cake for a lot of our members. The circuit won't need to switch
any appreciable voltage or power, but I do want to use a physical relay
rather than a solid state switch of any sort.

I'll appreciate any suggestions!  I'd also like to scrounge up the
necessary parts if anyone's got the appropriate stuff lying around. 

Thanks,
--Dave Sica
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