Reply to "P)roto Couplers PS1 vs PS2"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Won't work, you'll drop all the voltage across the 22 ohm resistor. The PS/2 couplers get a very short pulse and they draw several amps in order to operate.

I don't think 400ma is enough to operate any coupler. If you really want to use the coupler, you're going to have to add parts, specifically something like a high power FET to actually fire the coupler and use the DCC output to trigger it.

4/20/217:40 PM

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