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Reply to "P)roto Couplers PS1 vs PS2"

The PS/1 couplers are designed to fire on 12-18 VAC, basically track power.  The PS2/3 couplers are designed to fire on about 6V DC.  They are not compatible.  The impedance of the two are about 3:1 different.  You can try them, I've seen people use the PS/1 couplers successfully on the PS/2, but don't be surprised if they don't work well.

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