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根据电路实验课的要求,实验室中要具备正弦波,方波和非正弦波的信号源。为此我室自制了一种小型多用信号源。它具有线路简单,体积小(28×17×8、m),重量轻(一公斤),造价低的特点。经过一段时间的使用,能够较方便地满足多个教学实验的要求。如电压共振、过渡过程,非正弦等实验都可以用此信号源。尤其是做非正弦实验时,可以用示波器观察到非正弦波的合成情况。即分别观察基波,三次谐波以及它们之间的相位和频率关系。这在目前的振荡器产品中是没有的。
According to the requirements of the circuit experiment class, the laboratory should have a sine wave, square wave and non-sine wave signal source. For this purpose, I made a small multi-purpose signal source. It has a simple line, small size (28 × 17 × 8, m), light weight (one kilogram), low cost. After a period of use, can more easily meet the requirements of a number of teaching experiments. Such as voltage resonance, transition, non-sinusoidal experiments can use this signal source. Especially when doing non-sinusoidal experiments, you can observe the synthesis of non-sinusoidal waves with an oscilloscope. That is, observe the fundamental wave, the third harmonic and the phase and frequency relationship between them. This is not present in current oscillator products.