Power Darlington Stage (CB22365E)

This circuit is an alternative to using Darlington power transistors in the previous amplifier. The power is a few watts.

Simple oscillator (CB20531E)
This oscillator takes advantage of the 2000 ohms headphone inductance as the oscillator circuit coil....
Absolute Value Amplifier (CB19771E)
This circuit, in addition to providing an output that corresponds to the absolute value of the...
FM demodulator for optical transmitter (CB25537E)
This circuit works with the previous two by demodulating the signals received modulated in FM. The...