Low Frequency Doubler MC1556G (CB14564E)

This circuit is from Motorola's 1990 Linear Databook. The circuit employs a component that is no longer common today.

Darlington Photo Trigger with Reset (CB14659E)
We found this circuit in the Texas Instruments opto-electronics manual. The button resets and the...
Motorcycle Anti-Theft (CB17083E)
This circuit is from a 1992 documentation, but the components used can still be easily assembled. The...
Medium wave booster (CB9171E)
This interesting amplifier for frame antenna for the medium wave range was found in a Popular...