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在初中化学实验8-1、高中化学实验2-1、中师化学实验8-1中,测试不同溶质的水溶液的导电性,比较电解质溶液导电能力强弱的实验装置,安装较复杂,耗药量大,运用200V 市电不安全。笔者从音频输出指示电路工作原理中得到启发,试制出了“电解质溶液导电演示器”,较好地克服了原有实验装置的缺点。该仪器一体
In junior high school chemistry experiment 8-1, high school chemistry experiment 2-1, and normal division chemistry experiment 8-1, the electrical conductivity of the aqueous solution of different solutes was tested, and the comparative experiment apparatus for comparing the electrical conductivity of the electrolyte solution was relatively complicated to install and consume the medicine. Large amount of use of 200V electricity is not safe. Inspired by the working principle of the audio output indicating circuit, the author produced a “electrolyte solution conductive demonstrator” to overcome the shortcomings of the original experimental device. The instrument is one