Non Inverting Amplifier (CB6433E)

Based on an operational of the time, this Popular Electronics circuit can be designed with any equivalent operational.

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Alternate Tone Control (CB25834E)
This passive circuit was found in the March 1995 issue of Elexctonics Now magazine. The circuit is for...
Code Switch (CB6536E)
We found this circuit in a Popular Electronics of the 80s. Used integrated circuits are uncommon...
Automatic Safety Flasher (CB5207E)
The transistors of this circuit can be BC548 for NPN and BD136 for PNP with load up to 500 mA. The...