Found in the February 1983 Radio Electronics magazine, this circuit uses a FET and has good gain at the frequencies determined by the components. The FET is any general-purpose FET.
This simple circuit tests both monophonic and other two-wire audio cables. The circuit is powered...
This circuit was originally designed to operate with the CB18751E which transmits its signals via...
This configuration has already been found in other manuals, as the LM117 is manufactured by...