So, I'm thinking of making some solid state opto isolator modules for switching a 5V signal based on 120-240VAC input. I know this can be done with a small relay, but unless this is a really horrible idea, let's stick with the opto idea for now. Here's the current incarnation of my plan:
I simmed with two separate optos because LTspice didn't have an AC input (two emitter LED) model, but my plan would be to use a single opto suitable for AC.
The question is about input current limiting. It seems I can get the LED current where I need it using just the impedance (react
I simmed with two separate optos because LTspice didn't have an AC input (two emitter LED) model, but my plan would be to use a single opto suitable for AC.
The question is about input current limiting. It seems I can get the LED current where I need it using just the impedance (react