Voltage doubler power supply (CB8166E)

Using a 12 V transformer, this unit can provide a much higher output voltage. The circuit is from a 90’s Popular Electronics.

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Ring counter (CB6597E)
Found in 1967 General Electric documentation this circuit appears elsewhere in this section. SCRs are...
Signal Injector (CB4569E)
This signal injector circuit, an astable multivibrator, was found in a 1971 magazine. The circuit can...
Preamplifier with 741 IC (CB24944E)
In the figure we have a two-channel preamplifier with two 741 integrated circuits. The circuit is from a...