PLL (CB7971E)

This common operational PLL circuit was found in a Popular Electronics 90’s. The power supply need not be symmetrical.

Oscillator Phase Shift (MSB036)
The frequency of this type is oscillator is given by the RC network. Calculations can be found in...
Triangular generator (CB21445E)
Found in old documentation about neon lamps, this circuit produces very low frequency signals that...
20 A Adjustable Power Supply (CB1220E)
This circuit was obtained from an American publication of 1982, but can be assembled with ease...