This simple circuit for switching RF signals was found in an RF Design from the 90s. The circuit operates from 10 to 1 000 MHz and is 50 dB insulated.
This circuit came out in a 1978 American publication, but can be assembled with transistors BC547 or...
The trigger signal for this circuit is an audio tone. Tones up to close to 100 kHz can be used. The...
This circuit was found in a 70s documentation. The transistor is from that time. L1 has 4 turns of...