Even if I’m wrong about arc when mechanical contacts open, there is still a rather large harmonic / spike along the wiring from the mechanical relay to the load to suppress when those contacts ...

Electronic relays have evolved a lot since their introduction in the early '30s, but their basic purpose hasn't changed. Transistors and integrated circuits have replaced vacuum tubes and the term ...

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Solid-State Triac Devices Replace Mechanical Relays In Power Switching Applications Feb. 6, 2009 Mechanical relays, contactors, and switches control the flow of electricity by the mechanical ...