I picked up some optocouplers cheap from the bargain bin. I was expecting to find 4 useful pins (2 in, 2 out, 2NC), but these turned out to be 4N32 units with a mysterious pin 6 connected to the base of the output phototransistor. Can I ground this pin to get the device to work as a 4 pin coupler? Connect it to supply voltage?
I just want to switch the output side on/off without an electrical connection to the circuit on the input side, no amplification, inversion, etc required.
Thanks, Chris