In this post we’ll study a simple high current mosfet based SPDT DC relay, which can be used in place conventional bulky SPDT mechanical relays. The idea was requested by Mr. Abu-Hafss. Working Concept A simple high current SPDT solid state DC relay or a DC SSR can be constructed using a couple of mosfets […]
SPDT
SPDT Relay Switch Circuit using Triac
An efficient solid state single pole double throw or SPDT switch can be built using triacs for replacing a mechanical SPDT. In this post I have explained 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 […]