Balanced beam electrostatic voltmeter modulator employing a shielded electrode and carbon fiber conductors
First Claim
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1. An apparatus for measuring the magnitude of an electrostatic field, comprising:
- a balanced beam adapted to vibrate about a support at a midpoint thereof;
an electrode operatively associated with said balanced beam and electrically insulated therefrom, said electrode moving in unison with said balanced beam in the electrostatic field to produce a high voltage biased signal;
a high voltage signal processing circuit; and
a multi-stranded conductor for electrically connecting the electrode to the high voltage signal processing circuit, said high voltage signal processing circuit generating, in response to the high voltage biased signal, a second signal, having a lower voltage than the high voltage biased signal, in proportion to the magnitude of the electrostatic field.
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Abstract
A non-contacting electrostatic measurement apparatus including a vibratory element and an electrode, affixed to the vibratory element, suitable for sensing a capacitive coupling relationship with an electrostatic field to produce a signal indicative of the magnitude of the electrostatic field. The signal is transmitted to signal processing circuitry via conductive fibers so as to impose little mechanical loading on the vibrating electrode. The electrode may be either unshielded, for an electrically floating electrostatic voltmeter, or shielded, for an electrostatic voltmeter employing electrically grounded components.
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Citations
24 Claims
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1. An apparatus for measuring the magnitude of an electrostatic field, comprising:
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a balanced beam adapted to vibrate about a support at a midpoint thereof; an electrode operatively associated with said balanced beam and electrically insulated therefrom, said electrode moving in unison with said balanced beam in the electrostatic field to produce a high voltage biased signal; a high voltage signal processing circuit; and a multi-stranded conductor for electrically connecting the electrode to the high voltage signal processing circuit, said high voltage signal processing circuit generating, in response to the high voltage biased signal, a second signal, having a lower voltage than the high voltage biased signal, in proportion to the magnitude of the electrostatic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for producing a signal representative of the magnitude of an electrostatic field, comprising:
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a vibratory element having one end which is free to vibrate; an electrode affixed to the vibrating end of said vibratory element, said electrode adapted to move in unison with said vibratory element through the electrostatic field to generate the signal; and a multi-stranded conductor having only first and second opposed ends thereof affixed, wherein the first end is affixed and electrically connected to said electrode to enable the transmission of the signal from the electrode to a high voltage signal processing circuit affixed and electrically connected to the second end of said multi-stranded conductor, said multi-stranded conductor being supported only at the opposed ends thereof so as to apply only insignificant mechanical loading to the vibrating end of said vibratory element. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification