This circuit was found in the 1990 Motorola Dataar Linear. We can mount it with more modern equivalent transistors. Output transistors shall be provided with heat radiators.
The basic idea of this circuit is to convert the indication of a magnetic sensor to an audio tone...
This untuned circuit uses one of the world's first commercial transistors, the CK722, having been...
We found this circuit in the May 1989 issue of Radio Electronics magazine. The circuit uses...