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#3396261 - 09/23/11 12:28 PM Toggle switch circuit question
iam73 Offline
Member

Registered: 03/03/08
Posts: 182
Hi guys,

This question is for anyone who's pretty good at electronics and circuitery.

You probably know there is a way to use regular ON/OFF toggle switch with a "hacked" keyboard controller, by building a small circuit with a relay and capacitor.
Only problem is, the cost can get pretty high when a lot of toggles are involved... relays sells for approximately 3-4$ each.

SOmeone in a foum on AVSIM mentioned it was possible to do the exact same thing using SCRs (thyristor) instead of relays. SCRs sells for approximately 0.75$ each.

So, could anyone confirm if this really can be done and if so, provide a basic circuit using SCR - and last but not least, what type of SCRs would be required, assuming the power source would be a 12v battery?

Thanks guys!


Here's the link I'm refering to above:
http://forum.avsim.net/topic/132911-toggle-switch-circuit/


Edited by iam73 (09/23/11 12:40 PM)

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#3396586 - 09/23/11 08:21 PM Re: Toggle switch circuit question [Re: iam73]
Mike Powell Offline
Member

Registered: 05/01/06
Posts: 112
Loc: California, US
Yes, it's possible to do that. I don't think I'd use an scr. A better choice would be an opto-isolated FET.

If cost is an issue, the implication is that you need to connect a number of switches. If so, you may be better served by buying one keyboard emulator rather than building a number of individual switch buffers for a hacked keyboard.

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#3397305 - 09/25/11 06:51 AM Re: Toggle switch circuit question [Re: iam73]
choowy Offline
Member

Registered: 12/06/10
Posts: 129
Try this link out, it uses an non-relay system to incorporate toggles.


http://www.flightsim.com/main/howto/switches.htm

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