We found this circuit in American documentation from the 1980s. Transistors can be of general use. The frequency range of the generated signals ranges from 500 kHz to 10 MHz.
The circuit presented uses Linear Technology Operationals, having been found in a 1993 manual. The...
The circuit presented with low drift is from the Motrorola LinearDatabook of 1990. The circuit...
120 degree lagged signals can be obtained with the simple configuration shown in the figure....