Found in the book 303 Circuits, this circuit compresses signals from 25 mV to 20 Vpp to intensities of 1.5 Vpp to 3.5 Vpp. The frequency range is from 7 Hz to 67 kHz.
120 degree lagged signals can be obtained with the simple configuration shown in the figure....
This circuit was obtained from an American publication from the 80's. We can use a BD136 instead...
This circuit can be powered from 4 to 12 V sources. Pin 6 is the positive supply. See more about...