Electrostatic voltmeter with a balanced beam modulator employing a shielded electrode and carbon fiber conductors

摘要

A non-contacting electrostatic measurement apparatus including a vibratory element (32) and an electrode (34), 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 (50), such as carbon 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.