УСТРОЙСТВО ДЛЯ КОНТРОЛЯ НАЛИЧИЯ ЗАЗЕМЛЕНИЯ В РОЗЕТКЕ

摘要

FIELD: electricity. ^ SUBSTANCE: device contains two electric branches, some ends of which are connected between each other, and the others - to corresponding contacts of plug. Every branch includes indicator element, which is serially connected to limiting resistor. Indicator elements are arranged in the form of light diodes that are connected back-to-back. Earthing contact is taken out from the middle point of electric circuit that connects both branches. ^ EFFECT: simplification of device; higher reliability. ^ 4 dwg