Frequency Doubler MC1595L (CB14589E)

We found this circuit in Motorola's Linear Databook in 1990. The component used is not common today.

Defrost Alarm (CB4884E)
This defrost alarm starts from an interesting idea. A small magnet on an ice stone is trapped at the...
Headlight Alarm (CB26300E)
Found in the Radio Experimenter Handbook in a 1986 edition, this circuit warns when the car's high...
CB24029E Two-Transistor FM Transmitter ()
This interesting emitter-coupled circuit was found in the May 1970 issue of Radio Electronics...