Asadi F.2024-03-132024-03-1320241559-811Xhttps://doi.org/10.1007/978-3-031-50773-1_3https://hdl.handle.net/20.500.12662/2979Thyristor (or Silicon Controlled Rectifier, SCR) is an important solid-state switch. It is a unidirectional device. This means that current can pass from anode to cathode only. Triacs are similar to SCR’s but they are bidirectional devices. This chapter studies the Thyristors and Triacs. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.eninfo:eu-repo/semantics/closedAccessBook Chapter10.1007/978-3-031-50773-1_32-s2.0-8518247477352N/A39Part F2080