This circuit was obtained from an American 80's documentation. The balanced mixer can be shown in CB4234. The circuit is for controlling RF signals in a modulation system.
This circuit was found in a French magazine Toute LÉlectronique from 1978. Transistors are not...
This circuit interrupts the power supply when grounding is missing. The circuit is from an old...
This circuit can be used to generate signals from 300 kHz to 10 MHz, depending on the crystal...