Solid State Relay Control Circuit Diagram. How to wire ac solid state relay ac solid state relay wiring diagram 21 single phase dc to ac solid state relay. Circuit diagram of triac based solid state relay circuit parts list r1 120 k r2 680k r3 1 k r4 330 k r5 1 m r6 100 ohms 1 w c1 220 uf 25 v c2 474 400 v metalized polyester c3 022uf400v ppc z1 30 volts 1 w t1 t2 bc547b t3 bc557b tr1 bt 36 op1 mct2e or similar.
Moc3020 photo triac drive can be used to control devices such as insulated motors and lamps. Consist of semiconductors so there is no contact erosion caused by switching. Selection and purchase of solid state relays.
The circuit principle of dc solid state relay is.
As shown in diagram b vt is closed and ssr is in off state at ordinary time. Oscar montero rd manager and doug sherman fsae manager crydom inc. A variety of high power solid state relays are available. Solid state relay ssr can be controlled directly by npn type or pnp type transistor as shown in circuit diagrams a and b below.