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图1是一个自激多谐振荡电路,它产生的波形如图2.这个电路元件很少,但却有着频率变化范围大、频率稳定、可取出三种不同的波形等优点. 电路工作原理为:当电源E_(bb)接通后,G_1管电流对电容器C经R_2进行充电,充电电流在R_2上产生一压降足以使得G_2管截止;随着充电电流的减小,R_2上的电压也随着减小.同时,C上电荷的积累,使G_2管的板压也随之升
Figure 1 is a self-excited multivibrator circuit, which produces the waveform shown in Figure 2. This circuit has few components, but with a wide range of frequency, frequency stability, three different waveforms can be taken out of the advantages of the circuit works : When the power E_ (bb) is turned on, the G_1 tube current charges the capacitor C via R_2, and the charging current generates a voltage drop at R_2 sufficient to make the G_2 tube cut-off. With the decrease of the charging current, the voltage on R_2 With the decrease of the same time, the accumulation of charge on C, G 2 tube plate pressure also will rise