原来美国 RCA 的 CMOS 集成电路手册介绍而现在比较通用的由 CMOS 反相器组成的非稳态多谐振荡器其电路果下:图1它是由两级反相器构成的反馈电路。其工作原理为当接通电源时,A_1输出产生正跳变,电源向 C_TR_T 充电,电容 C_T 上电压不能突变,因此 A_1输入端有正电压加上,A_1处于开启状态,A_1输出端处于低电平,A_2关闭,其输出端处于高电平,经 C_T R_T及A_1导通管对 C_T 充电,当 C_T 充电到一定时,充电电流减小,在 R_T 上电压逐渐下降,低 The original United States RCA CMOS integrated circuit manual introduced now more common by the CMOS inverter astable multivibrator its circuit results: Figure 1 It is composed of two-stage inverter feedback circuit. Its working principle is that when the power is turned on, A_1 output produces a positive transition, the power charge to C_TR_T, the capacitor C_T voltage can not be abrupt, so the A_1 input plus a positive voltage, A_1 is turned on, A_1 output is low Ping, A_2 off, the output is high, the C_T R_T and A_1 lead tube charge C_T, when C_T charge to a certain, the charge current decreases, the voltage on the R_T gradually decreased, low