Simulation and realization of frequency occupation in sinusoidal oscillator

The research purpose of this paper is to add a signal source on the basis of capacitive three-point oscillation circuit to produce frequency occupation phenomenon. Firstly, the frequency occupation phenomenon is simulated with Multisim 10 software to verify the accuracy of the calculated frequency occupying the critical point and bandwidth. Then the hardware circuit is built on the printed circuit board, and the actual waveform and spectrum diagram are compared with the corresponding diagram generated by the simulation software Multisim 10. By comparing the differences between them, the rationality of the static operating point and component parameter setting of the circuit is judged.