Remote control tester (CB7823E)

This circuit from a 90s Electronics Now, uses a 4010 gate as a signal amplifier. The circuit triggers an indicator LED.

Instrument driver (CB6840E)
Found in Texas Instruments documentation from the 90's, this circuit can be used as a shield due...
Square to Sinusoidal Converter (CB6595E)
This circuit was obtained in an American publication of the time. Transistors are commonly used. The...
MOSFET VHF Amplifier (CB4688E)
This MOSFET amplifier operating in the VHF range was found in an old American telecommunications...