We found this circuit in an American publication from the 90s. It generates pulses that can be modulated in amplitude. The supply can be done by voltages from 5 to 12 V and the frequency depends on C1 and C2.
This circuit is based on the bistable configuration, but with the difference that the values of...
This Wien bridge oscillator was found in Radio Electronics from the 90s. The circuit uses the 741...
The configuration shown in the figure is one of the most traditional when it is desired to produce...