The collector of transistor output module plc circuit

The collector of transistor output module plc circuit that outputs a signal to the internal circuit of the output latch, and then sent via the analog output plc output transistor, which is saturated conduction state and the off state corresponds to the turning on and off the contacts opened. Figure regulator to suppress over-voltage shutdown and external surge plc communication module to protect the transistor, the transistor output circuit delay time <1ms. The output circuit of the transistor structure of the output circuit of the FET is substantially the same.