VOLTAGE INDICATOR (OPTIONS) Russian patent published in 2022 - IPC G01R19/155 

FIELD: measuring equipment.

SUBSTANCE: present inventions relate to voltage indication devices and are intended to indicate the presence or absence of a controlled voltage. The proposed devices can be used in high-voltage electrical networks, power distribution devices, as well as in electrical converters to indicate the presence and absence of high voltage in both DC and AC networks. The essence of the claimed devices lies in the fact that the voltage indicator contains an optoelectronic key, a transistor, resistors, a power supply and an indicator lamp that is LED and contains two counter-parallel LEDs. The optoelectronic key 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 the indicator lamp diffuser in different colors, depending on the presence or absence of the controlled voltage.

EFFECT: provision of galvanic isolation of the measuring and indicator circuits, simplification of the connection scheme of the indicator lamp, the possibility of working both in DC and AC networks, as well as improving electrical safety when using it.

7 cl, 16 dwg