This circuit was found in the component's own manual, which is not very common nowadays. Note that the circuit requires the use of a symmetrical power supply.
The interesting circuit shown in the figure, can have its gain digitally controlled and present two...
This circuit includes the amplifier for the signals, being fully transistorized and using varicap...
The figure shows how to use a 12 V signal to trigger a TTL gate using an optical coupler. The...