| 摘要 |
A digital output circuit includes an output transistor that performs, in accordance with a gate signal output by a light receiving element 9 of an insulated circuit 7 that is driven with a power supply voltage generated by an insulated power supply circuit 4 and that responds to a signal processed by a controller 5, ON/OFF control on an external power supply connected to an output device that is a load. The digital output circuit includes: a wiring switching function unit 14 including a first connection switching mechanism 14a and a second connection switching mechanism 14b that perform, at two locations, switching of connection and disconnection of wiring between the light receiving element 9 and the source or emitter of an output transistor 13; and a logic adjustment function unit 20 that adjusts inversion of an output logic of the light receiving element 9 in accordance with the type of the output transistor 13, and performs switching between a sink current type circuit configuration and a source current type circuit configuration. |
