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中学物理整流器和推挽功率放大器两部分内容,一般需用示波器方能进行演示实验。目前,有些中学又没有这种设备,这就给这部分内容教学带来一定的困难。本文介绍几个实验不用示波器就可做上述内容演示实验。一整流 (一)半波整流 1.器材:大功率二极管(为2C2型)一只,可用坏的三极管3AD18或3AD30代用。2Ω的电阻一只,可拆变压器初级线圈一个,条形磁铁一块,灵敏电流表一块(演示灵敏电流表即可)。
Secondary physical rectifier and push-pull power amplifier two parts, the general need to use oscilloscope demonstration experiments. At present, some secondary schools do not have such equipment, which brings certain difficulties to this part of the teaching of content. This article describes several experiments do not use the oscilloscope can do the above content demonstration experiment. A rectifier (A) half-wave rectifier 1. Equipment: high-power diode (2C2 type) can be a bad transistor 3AD18 or 3AD30 alternative. 2Ω resistor, detachable transformer primary coil, a bar magnet, a sensitive ammeter (demo sensitive ammeter can be).