Published:2011/7/17 21:11:00 Author:zj | Keyword: Voltage control, oscillator circuit | From:SeekIC
This circuitis a voltage control oscillator circuit composed of μA709. In a circuit,VT1 and VT2can consist of the driving switch circuit;A1 can form Miller integral circuit ; A2 and G1 ~ G3 can constitute a backlash adjustable level comparator circuit. The output of the A2 through the G3 and VT3 are fed to the non-inverting input end to form a positive feedback loop, which constitutes a bistable characteristics of hysteresis comparator circuit.
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