Solid State Relay Ssr Circuit Diagram. Triac is used at the place of coil relay to switch on and off. As shown in diagram b vt is closed and ssr is in off state at ordinary time.
It is possible to use a low voltage to switch a higher voltage or better than ordinary relay. In this post we learn how to construct a simple solid state relay or an ssr circuit using a triac bjts a zero crossing opto coupler. Solid state relay is a type of switch to activate load by using without any mechanical parts.
In this project we have designed a simple ssr.
Solid state relay ssr can be controlled directly by npn type or pnp type transistor as shown in circuit diagrams a and b below. It is possible to use a low voltage to switch a higher voltage or better than ordinary relay. In this project we have designed a simple ssr. Solid state relay or ssr is a static semiconductor switching device.
