I'm sure you guys know that an EVSE signals to a car how much power to draw by altering the mark/space ratio of the control pin squarewave. A 50% mark (and 50% space) corresponds to 30 Amps, and a 10% mark (and 90% space) corresponds to 6 Amps.
Has anyone tried to change these on a non-adjustable EVSE? I'm wondering if a simple CR high pass filter could give the desired effect. Obviously the mark would no longer be a nice square shape, but how sensitive is a car to that?
Has anyone tried to change these on a non-adjustable EVSE? I'm wondering if a simple CR high pass filter could give the desired effect. Obviously the mark would no longer be a nice square shape, but how sensitive is a car to that?