DIY Electric Car Forums banner

555 timer

  1. Simple analog PWM generation - use for isolated voltage monitor

    Technical Discussion
    Looking at the design of the EMW charger, and particularly the way it now uses an optocoupler to measure input mains voltage, made me think of a possibly equally cheap, but much more accurate, way to implement this function. Basically, a voltage-to-PWM circuit could drive an oprocoupler with a...