I just got the latest Hifi News magazine and, as usual, the same ridiculously expensive mains cables etc are being pimped. I usually just skim over that crap, after admiring how pretty it is, but this ...

A 4-pin plastic base, top contact, S-shaped envelope. Donor’s card reads: “Half wave mercury vapor rectifier made by the General Electric Company for the Radio Corporation of America in January 1929.

In the realm of modern electronics, semiconductor diodes have emerged as fundamental components with diverse applications. One of their pivotal roles lies in the fields of rectification and voltage ...

A 4-pin plastic base with top cap, domed envelope. Stamped on base: “CBS / Made in U.S.A.” Donor’s card reads: “Half-wave mercury vapor rectifier made by CBS-Hytron. Used in the power supply of radio ...