Stereo FM Transmitter (CB8459E)

This circuit was found in a 90s Radio Electronics. The FM encoder or multiplexer is an uncommon component today.

Mini Animatronic (CB20429E)
This circuit was originally designed to drive an engine with a small flower that dances when the...
Amplifier for tunnel diode (CB23848E)
In the figure we have an RF amplifier for tunnel diode. The frequency range will depend on the...
Middle Control (CB955E)
Using two common operationals, such as 741, this circuit serves as a medium control in an...