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在电化学实验教学中,如铜—锌原电池、溶液的导电性、电解等实验因缺少专用仪器和设备,导致实验现象可见度小,很难达到预期效果。为此,笔者利用电子技术原理,采用发声灵敏度很高的 COMS 音乐电晶片及晶体三极管为主要元件,设计、制作了一套多功能电化学实验仪。它适用于微弱直流电流的检测(如原电池、水果电池等)、溶
In electrochemical experiment teaching, experiments such as copper-zinc primary battery, conductivity of the solution, electrolysis, etc., due to the lack of special instruments and equipment, result in small visibility of the experimental phenomenon, and it is difficult to achieve the desired effect. For this reason, the author designed and manufactured a multi-functional electrochemical experimenter using the principle of electronic technology, using COMS music chips and crystal transistors with high vocal sensitivity as the main components. It is suitable for the detection of weak direct current (such as primary battery, fruit battery, etc.)