Found in a 90’s Popular Electronics, this circuit generates sinusoidal signals with frequency controlled by an input signal. C4, C3 and C1 together with R12 and R3 determine the frequency generated.
This circuit was found in an old manual and can be applied to any operational amplifier. The power...
This circuit uses a JFET at the input to increase the impedance. The circuit has a gain voltage...
An excellent low frequency sine signal is produced by this oscillator. The frequency is determined by the...