PLL (CB7971E)

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

First IF Amplifier Stage (CB935E)
For reference only, this is the first IF amplifier stage of a common transistor radio from the...
Active Integrator (CB24390E)
This circuit from July 1975 Radio Electronics uses any operating system with a symmetrical source....
LM3900 Inverter Amplifier (CB4028E)
This setting is valid for other transconductance operational amplifiers. The circuit is from...