This circuit produces low frequency sinusoidal signals. The circuit is a phase shift oscillator using on general purpose transistor. The frequency is determined by C1, C3 and C4 and can be changed replacing these resistors. Power supply can made from sources between 9 and 15 V. Simulation in MultiSIM Blue is given vellow with the waveshape displayed in the virtual oscilloscope. In some cases, the circuit can have some difficult to start. The frequency with the used values of components is about 250 Hz.
To download the simulation files and Netlist - click here (msb0013e.zip)
