It expounds how to use non-contact switch to stop the short circuit of the electric apparatus and lamp circuits etc. from sparking, and shows experimental and practical parameters.

阐明了如何使用无触点开关来防止电器线路及灯具等短路产生的火花，并给出了实验和实用参数。

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The electric circuit design of the apparatus and its experimental results have been presented.

文中还介绍了这台装置的电路设计和实验结果。

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Objective to design the circuit used in drug-iontophoresis and interference electric current therapy, which is a multi-functional apparatus.

目的：设计实现药物离子导入和干扰电多功能治疗仪的电路。

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