This trimmer or reaper amplifier cuts the signal peaks at a voltage determined by the zener diodes. The gain is given by R1 and R1 and the power supply must be symmetrical from 5 to 15 V.
This Wein bridge oscillator provides a sinusoidal 3 to 4 kHz signal. The circuit was found in a...
This circuit was found in the power semiconductor manual of the 1980s ON Semiconductor. The...
This circuit with a common FET generates signals around 1 MHz, depending on the crystal used. We...