Based on the BA1404 integrated circuit, this circuit was found in the July 1992 issue of Radio Electronics magazine. The circuit is short range, but a power amplifier stage can be used.
The circuit shown in the figure can be used as a high voltage indicator on a power supply line of...
This simple circuit was found in the November 1992 issue of Radio Electronics magazine. It...
The circuit shown by the figure below can produce signals in the range between 20 kHz and 30 kHz....