使用单电子枪示波管的示波器,欲观察或比较两个以上的波形时,必须借助于多线电子开关。又名电子交换器。这里,向大家介绍一架只使用六只晶体管的双线电子开关。它可以用来在普通示波器上同时观察两个波形。其电路组成如图所示。由BG_(1、(?))组成一对称的多谐振荡器。改变接在基极与集电极间的电容器,或调节电位器W_1,可改变振荡器的振荡频率。我们知道:晶体管在饱和时,集电极、发射极之间将呈现很小的阻抗,这相 Use single electron gun oscilloscope oscilloscope, to observe or compare more than two waveforms, you must use multi-wire electronic switch. Also known as electronic switch. Here, to introduce a two-wire electronic switch using only six transistors. It can be used to view both waveforms simultaneously on a normal oscilloscope. The circuit shown in the figure. By BG_ (1, (?)) Composed of a symmetrical multivibrator. Changing the capacitor connected between the base and the collector, or adjusting the potentiometer W_1, changes the oscillation frequency of the oscillator. We know: transistor saturation, the collector, emitter will show a small impedance between this phase