Frequency Doubler MC1595L (CB14589E)

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

Partial Dimmer (CB7858E)
This circuit of a 1991 PE Hobbyst Handbook allows the brightness of the incandescent lamp to be...
Morse Code Practice oscillator (CB9885E)
This circuit is from the old RCA transistors manual of 1964. The transistor can be the BC558 and...
Simple MW Radio 4 (CB4362E)
Originally this circuit is from an English magazine, but I found it in Argentina's Radio Chassis...