要改变通常的多谐振荡器的信号频率,必须调节电路里的电位器。这里介绍的对称多谐振荡器,其频率能自动按一定规律和速度(该速度可由预先整定的电位器确定)变化。振荡器的电原理如图所示。其中BG_1和BG_2组成多谐振荡器,BG_3用于功率放大。音频信号由扬声 To change the multivibrator signal frequency, the potentiometer in the circuit must be adjusted. Symmetric multivibrator here introduced, its frequency can automatically according to certain rules and speed (the speed can be determined by the pre-set potentiometer) changes. Oscillator power principle as shown. One BG_1 and BG_2 form a multivibrator, BG_3 for power amplification. Audio signal by the speaker