1kHz to 1MHz sine oscillator circuit

Published:2012/8/21 21:03:00 Author:Ecco | Keyword: 1kHz to 1MHz , sine oscillator | From:SeekIC

Sinusoidal oscillator circuit issimple in many measuring instrument, and oscillation loop should be connected to a high-frequency ground, and it can not use the coil center tap to achieve the feedback, in this case it can use the circuit shown as figure. The oscillation starting of shock drop is adjusted by potentiometer RP2, the purpose is to make T1 and T2 transistors have the same base current. Transistor T3 is used for controlling the current of T1 , T2 oscillation loop, and its size is changed by adjusting potentiometer RP1. Circuit output voltage can be adjusted between 100mV ~ 5V.



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