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.
Using an LF356 operational, this circuit was found in the September 1989 issue of Radio...
This 600 kHz circuit is designed to locate a lost boat anchor. The circuit has a range of up to 10...
September 2016 – At Mouser is available the new N channel MOSFETs PMGD175NEX from NXP for currents of 950...