FET RF mixer (CB20761E)

This circuit was found in a documentation from the 70s. The FET admits current equivalents and the frequency of the signals depends on the coils.

AM Modulator (CB5362E)
This circuit is from an American 80's documentation. The integrated circuit is of the time and is no...
Linear Light Control (CB18629E)
This linear control or dimmer for small incandescent lamps was found in documentation from the...
Voltage Controlled Oscillator (CB4168E)
This VCO with a common operational amplifier was found in an old American documentation. The...