0 to 25 V x 100 mA Regulator MC1466L (CB14521E)

This circuit, which uses an unusual integrated, is from the Motorola Linear Databook of 1990. Transistors admit equivalents.

Transistor Polarization Zener Regulator (CB13358E)
The purpose of this circuit is to maintain the polarization voltage of the base of a transistor at -1.8 V,...
Sine to Square Converter (CB6592E)
Found in a 1964 Electronic Design this circuit makes use of components of the era. The output is 2 V...
Touch Switch 2 (CB10403E)
This circuit was obtained in a 2001 Poptronics. The magazine no longer exists in its printed form,...