PLL (CB7971E)

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

30 VA Inverter (CB19917E)
This inverter was found in an old European documentation, but components are still current. Only...
Zero Crossing Detector (CB14048E)
This Zero Crossing Detector was found in a 1972 RCA manual, but it can be made using any modern...
4060 Touch Switch (CB3850E)
This circuit uses one of the 6 CMOS inverters of a 4060 as a touch on / off switch. The power...