Airsoft Canada - View Single Post - PSG-1: Systema Switch Relay Circuit installation

mcguyver · October 17th, 2006, 23:12

The relay circuit in those kits looks just like the ones that come with the PTW's. The 2 large silver wires that are alone at one end of the realy board are the input. The other 2 silver wires at the opposite end are the motor output and the small guage wires are the control input from the trigger.

There should be at least 2 control wires, one takes voltage to the trigger, and one returns from the trigger (switched leg) to apply gate voltage to the FET's. There are 3 wires on the board for the PTW's, but the third is supplying the negative half of the circuit to power the other board. This is not present in the PSG-1.

I would think it would be best to remove the stock wiring from the stock switch to the motor to allow you to use the stock switch to trigger the FET's.

October 17th, 2006, 23:12	#2
mcguyver Trader rating Join Date: Aug 2005 Location: Northern Alberta	The relay circuit in those kits looks just like the ones that come with the PTW's. The 2 large silver wires that are alone at one end of the realy board are the input. The other 2 silver wires at the opposite end are the motor output and the small guage wires are the control input from the trigger. There should be at least 2 control wires, one takes voltage to the trigger, and one returns from the trigger (switched leg) to apply gate voltage to the FET's. There are 3 wires on the board for the PTW's, but the third is supplying the negative half of the circuit to power the other board. This is not present in the PSG-1. I would think it would be best to remove the stock wiring from the stock switch to the motor to allow you to use the stock switch to trigger the FET's. __________________ Age verifier Northern Alberta Democracy is two wolves and a sheep discussing what's for dinner. Freedom is the wolves limping away while the sheep reloads. Never confuse freedom with democracy.