ELECTROSTATIC FIELD INTENSITY METER Russian patent published in 2017 - IPC G01R29/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring equipment and can be used for different charged materials and articles electrostatic fields intensity measuring. Electrostatic field intensity meter has sensitive electrode, connected to amplifier input, screening electrode, electromagnetic drive, mechanically connected with screening electrode, excitation generator, which output is connected to electromagnetic drive input, synchronous detector, which output is connected to indicator via low-pass filter, and main bipolar power supply unit, which power buses are connected to power supply busbars of amplifier, synchronous detector and low-pass filter. Besides, device includes additional bipolar power supply unit and galvanic isolation unit, additional bipolar power supply unit power supply busbars are connected to electromagnetic drive power supply busbars, excitation generator and with galvanic isolation unit input stage. At that, of the galvanic isolation unit output stage power supply busbars are connected to main bipolar power supply unit power supply busbars, excitation generator output is connected to galvanic isolation unit input, galvanic isolation unit output is connected to synchronous detector control input, bipolar power supply units common busbars are connected to screening electrode.

EFFECT: technical result consists in increase of meter sensitivity by increasing its noise immunity.

1 cl, 1 dwg