LT123 Low Voltage Linear Regulator (CB4399E)

The circuit presented is from the 1993 Linear Technology Applications. The components used were common at the time.

Rhythmic Lights (CB23933E)
This unijunction programmable transistor circuit was found in the December 1968 issue of Radio...
Frequency modulated oscillator (CB21132E)
Found in early American documentation, this circuit makes use of a general-purpose transistor and...
Blown fuse alarm (CB8967E)
We found this circuit in a 1980s documentation. The circuit uses general purpose transistors,...