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Triac based SPDT Relay Switch Circuit

The post details a simple solid state triac SPDT relay circuit, using an optocoupler and a couple of triacs, which can be used as an effective replacement for mechanical relays. The idea was requested by “Cypherbuster”. Introduction In one of the other posts we learned how to make an DPDT SSR using mosfets, however this … Read moreTriac based SPDT Relay Switch Circuit

Mosfet Based SPDT Solid State DC Relay (SSR) Circuit

In this post we’ll study a simple high current mosfet based solid state relay, which can be used in place conventional bulky SPDT mechanical relays. The idea was requested by Mr. Abu-Hafss. The Design A simple high current SPDT solid state relay or an SSR can be constructed using a couple of mosfets and an … Read moreMosfet Based SPDT Solid State DC Relay (SSR) Circuit

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