The circuit in the diagram is a very handy tool for rapidly checking all kinds of thyristor (SCR, triac, …). In case of a triac, all four quadrants are tested, which is done with S3, while in case of ...

This SCR phase control works much like the common TRIAC dimmer, but has numerous advantages including increased current capability, robustness and absence of minimum voltage “snap-on.” A complementary ...

A device stalling the morning commutes of thousands in the East Bay is difficult to pronounce, smaller than a coffee cup lid, on backorder for months and costs $1,000 apiece. BART needs 100 of these ...