Apparatus for a crater-style capacitor for high-voltage

Details Apparatus for a crater-style capacitor for high-voltage Apparatus for a crater-style capacitor for high-voltage

1998-10-28

2000-06-27

Reichard, Dean A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361329, 3613013, H01G 4005, H01G 400

Patent

active

060814152

ABSTRACT:
The invention relates to an apparatus for a crater-style sampling capacitor. The apparatus includes a dielectric having a smooth crater shaped input electrode on a first surface and output and guard electrodes on a second surface. A sampling capacitor is defined by the input and output electrodes, and a guard capacitor is defined by the input and guard electrodes. The edge of input electrode is positioned below the first surface to increase surface flash over voltage, further, the input electrode is curved to eliminate corona discharge at edges of the input electrode and to reduce self-heating to negligible levels. The apparatus is suitable for high-voltage radio-frequency applications, such as a mass spectrometer, or other high-voltage applications that require an accurate sampling capacitor for amplitude control and accurate sampling of radio-frequency waveforms.

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