VOLTAGE INDICATOR Russian patent published in 2021 - IPC G01R19/155 

FIELD: measuring equipment.

SUBSTANCE: present invention relates to voltage indication devices and can be used to indicate the presence and absence of a controlled voltage. The essence of the claimed solution is that the voltage indicator contains an optoelectronic key, a transistor, resistors, two indicator lamps and a power supply. The optoelectronic switch provides galvanic isolation of the controlled circuit and the power supply circuit of the indicator lamps, and also, together with the transistor and resistors, implements the glow mode of one of the indicator lamps in the presence of a controlled voltage or the glow of another indicator lamp in the absence of a controlled voltage. The proposed voltage indicator is versatile and can be used both in DC and AC circuits.

EFFECT: simplification of the voltage indicator circuit, improvement of its functional properties, providing galvanic isolation of the measuring and indicator circuits, as well as increasing electrical safety when using it.

4 cl, 4 dwg