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 nice analog indicator circuit was found in the January 1974 issue of Radio Electronics...
The purpose of this circuit is to increase the current of a MAX1735 regulator to obtain an output...
CMOS gates such as 4001 or 4011 can be configured as inverters and used in the circuit shown where...