This circuit was obtained from an American 1980s documentation. The frequency depends on the crystal and the circuit may be a PNP that reaches the generated frequency.
The circuit consists of a MAT (Very High Voltage) oscillator that, applied to a protected metal...
January 2017 - Mouser Electronics has announced the availability of Pulse Electronics' new...
This 80's amplifier delivers 6 W of 8 ohm speaker power without using an output transformer....