This PUT trigger circuit for SCR was found in 1967 General Electric documentation. The programmable unijunction transistor is not a very common component today.
This excellent amplifier with complementary symmetry output stage was taken from one of my audio...
This circuit was used as an eraser for old tape recorders. The circuit is from a 1960 Mullard...
This circuit, found in 1980s documentation, produces a rectangular signal of the same frequency as the...