Electrostatic Voltmeter With Spacing-Independent Speed of Response
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Apr 3, 2008
app pub date -
Sep 8, 2006
filing date -
Sep 8, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A non-contacting electrostatic voltmeter (ESVM) technique and apparatus having a spacing-independent dynamic response characteristic. Using the disclosed technique, an ESVM apparatus is capable of detecting and measuring electrostatic voltages and/or fields over wide variations of sensing probe to measured surface spacing with little or no variation in the dynamic response (speed and waveform) of the reported electrostatic voltage being measured. Disclosed is a feedback circuit that provides the spacing independence of the speed of response of an electrostatic voltmeter. In particular, the method and apparatus of the invention provides an AC-type auxiliary feedback loop that provides a means for a DC-feedback electrostatic voltmeter to maintain a fixed gain and thus stable response of the DC loop over a broad range of distances between the sensing electrode and measured surface.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully