ELECTRIC LEAKAGE PROTECTION CIRCUIT, ELECTRIC LEAKAGE PROTECTION APPARATUS AND LED APPARATUS

摘要

Disclosed are an electric leakage protection circuit, an electric leakage protection apparatus and an LED apparatus. The electric leakage protection circuit comprises: a power module (101) for providing an alternating-current signal; a rectification module (102) for rectifying the alternating-current signal into a direct-current signal; a bridge arm module (103) connected to an output end of the rectification module and the power module and used for receiving the alternating-current signal and rectifying same; a voltage circuit module (107) connected to an output end of the bridge arm module and used for forming a power signal circuit; a current detection module (104) connected to the rectification module and used for carrying out current detection on the direct-current signal and obtaining a current value; a voltage sampling module (105) connected to the current detection module and used for carrying out voltage sampling on the direct-current signal and obtaining a voltage value; and an electric leakage protection module (108) for controlling, according to whether the current value exceeds a pre-set threshold value and whether the voltage value exceeds a pre-set value, the switching on and off of the power signal circuit. The electric leakage protection circuit, the electric leakage protection apparatus and the LED apparatus realise the effect of single-end power supply as well as dual-end power supply, without carrying out power failure protection using a mechanical switch, and same have a simple circuit structure, are relatively low in cost and reduce the power consumption.