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在一般的非稳态多谐振荡器上简单地附加一电路,可使其频率范围和占空因数得到很大的改善。此外,这种非稳态电路极易变为单稳工作,并能保持原来的工作特性。共有两种电路,其基本电路很简单。控制电压V_C决定电容充电时间,因此可以获得很宽的频率范围。另一比较复杂的电路是自启动电路,它作为自激多谐振荡器使用,并外加了元件以改善输出豚冲波形。其元件如图所示,控制电压在V_(CC)至2伏之间,工作频率为1赫至12千赫。基本电路的频率上限取决于电流源的最大值和定
Simply adding a circuit to a typical astable multivibrator can greatly improve its frequency range and duty cycle. In addition, this non-steady-state circuit can easily become a single-stable operation, and can maintain the original operating characteristics. There are two kinds of circuits, the basic circuit is very simple. The control voltage V_C determines the capacitor charging time, so a wide frequency range can be obtained. Another more complicated circuit is the self-starting circuit, which operates as a self-excited multivibrator with additional components to improve the output waveform. The components shown in the figure, the control voltage between V_ (CC) to 2 volts, the operating frequency of 1 Hz to 12 kHz. The upper limit of the basic circuit frequency depends on the maximum current source and set