The interface circuit between a micro - computer and a drive circuit

摘要

P & an interface between an input circuit (5) is active at the high level for a semiconductor power component, and a micro - computer (2) for controlling an output signal of the input circuit comprises a first resistor (r1) whose end is connected directly to the output of the micro - computer, a schmitt trigger (7) in series with the first resistor, a diode (d1) connected between the first resistor and a supply voltage (ed); and a second resistor (r2) connected between an input terminal of the drive circuit and the ground. / p