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 makes a very fast switch when receiving an input signal. The FET can be BF245 and the...
The circuit presented was suggested by National Semiconductor in its Linear Applications Handbook. The...
This circuit uses one UJT (Unijunction Transistor) to produce three different tones in a...