Self-locking\interlocking hybrid application of TWH9238

Relevant key device information applied in this article: TWH9238 9013 In this circuit, the A and B channels are interlocking outputs. At the same time, only one channel can play a control role. The C and D channels are non-locking. For the connection method of type output, relays K3 and K4 should be self-locking relays. If ordinary relays are used, a set of bistable circuits should be added behind VT3 and VT4 (or at the output terminals C and D).