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.
Toshiba TCKE8xx eFuse IC Toshiba provides through Mouser Electronics circuits over current...
This circuit was found in the Radio Electronics magazine of May 1990. The supply voltage depends on...
This circuit was found in an American 80's documentation. The transistor is of germanium of the...