现在市售的漏电报警保安器是接触起控式的,笔者试制了一种非接触式漏电报警器,线路简单、功耗极微。有漏电报警时,耗电小于5mW,无漏电时不耗电,起控报警电流为0.5mA。报警方式为连续式,只要漏电故障不排除,仪器就不停地发出声光报警信号。工作原理本机是取漏电电压、电流作为供电电源。这样只要电路得到供电就会工作报警。电器正常工作时,因地线端电压为零,则 Leakage alarm security guard is commercially available from the control of the type, the author trial of a non-contact leakage alarm, the line is simple, minimal power consumption. A leakage alarm, the power consumption is less than 5mW, no leakage without power consumption, control the alarm current is 0.5mA. The alarm mode is continuous, as long as the leakage fault does not rule out, the instrument will stop sending audible and visual alarm signal. Working principle The machine is to take the leakage voltage, current as the power supply. This will work as long as the circuit is energized alarm. Electrical work, because the ground terminal voltage is zero, then