国外有人在使用交流电源的晶体管音频振荡器的稳压电源中,利用场效应晶体管来代替降压电阻,从而获得良好的稳压效果,保证了音频振荡器的准确度。这对于某些要求严格的稳压电源的改进将是一种试探途径。同样,上述结果也可推广到另一些适当的电路中去。需要注意的是,在使用场效应晶体管的过程中,切勿超过其电流额定值。 Someone abroad uses the AC-powered transistor audio oscillator in the regulated power supply, and uses the field-effect transistor instead of the step-down resistor so as to obtain a good voltage regulation effect and ensure the accuracy of the audio oscillator. This will be a tempting way to improve on some of the most demanding regulated power supplies. Again, the above result can be generalized to other suitable circuits. It should be noted that during the use of field-effect transistors, never exceed the current rating.