Using the 723 integrated circuit, this power supply has the voltage determined by R2 and R3, which can be changed. The circuit is from a Radio Electronics magazine from July 1971.
This capacitor for small capacitances is based on the tuning of a receiver circuit. The variable is...
This circuit is from the Motorola LinearDatabook of 1990. It shows how it uses the LF355, 356 and...
We found this circuit in an American publication from 1977. Combining a monostable with a...