A plastic 6-pin base with top contact, domed envelope. Stamped on base: “Continental / R.C.A. Lic.”, on envelope: “55”. Donor’s card reads: “Twin diode medium-Mu triode made by Continental Electric Co ...

A 6-pin plastic base with top contact, BT-shaped envelope. In original package. Stamped on envelope: "Western Electric / U.S.A. / 303A". Patents on box include 130[3?]579 - patent label is damaged.

Many hardware people around these parts will be familiar with devices used as switches, using at least three-terminals to effect this, an input, an output and a gate. Typical devices that spring to ...

Psst… Wanna make a canning jar diode? A tennis ball triode? How about a semiconductor transistor? Or do you just enjoy sitting back and following along an ...

Transistors are often dubbed as the nerve cells of the information age. As the active components of integrated circuits, any electronic device contains innumerable transistors as these semiconductor ...