本文介绍一种带有周期性通断开关的振荡器电路,它是由两级积分器和一个倒相器组成的新式反馈型振荡器。在每个积分器中都有一个开关与积分电容串联,改变开关脉冲频率可使输出正弦波频率在较宽的低频范围内成正比变化,频率覆盖范围可达10~6倍。这种方法具有一般性,可用于任何普通RC振荡器。 This article describes an oscillator circuit with a periodic on-off switch, which is a new feedback oscillator consisting of a two-stage integrator and an inverter. In each integrator, there is a switch in series with the integrating capacitor. Changing the switching pulse frequency can make the output sine wave frequency change in a wide range of low frequency range, and the frequency coverage can reach 10 to 6 times. This method is generic and can be used with any normal RC oscillator.