Simulation of RC-Wien-bridge sinusoidal oscillator circuit based on Multisim 10

Based on the software of Multisim 10,we simulate the properties of a RC-Wien-bridge sinusoidal oscillator circuit in terms of a proposed Mltisim simulation scheme.The work processes from the start-oscillation to the fixed amplitude output of the circuit,and all is simulated,and the qualifications such as the amplified voltage's multiple,feedback coefficient,and the self-excitation oscillation are measured.We find the properties of the output amplitude and the nonlinear distortion factor changing with the circuit's parameters are well consistent with the theoretical ones.A conclusion can then be drawn that simulation experiments describes well the circuit's work properties,and can be used to choose the parameters of the circuit's elements.