Electrostatic voltage sensor

Details Electrostatic voltage sensor Electrostatic voltage sensor

1982-03-08

1985-11-12

Karlsen, Ernest F.

Electricity: measuring and testing

Electrostatic field

Using modulation-type electrometer

324 72, 324118, 333152, G01R 2912

Patent

active

045530998

ABSTRACT:
An electrostatic voltage sensor which includes a surface acoustic wave propagating medium and transmitting and receiving transducers coupled to the medium. The voltage sensor is provided with a separate voltage collecting member different from the electrode for applying a voltage or electric field, and the voltage obtained in the voltage collecting member is varied by a predetermined frequency for being applied to the electrode so as to detect external voltage by the variation component of the oscillating frequency.

REFERENCES:
patent: 3189825 (1965-06-01), Lahti et al.
patent: 3384820 (1968-05-01), Dimeff et al.
patent: 3818336 (1974-06-01), Marshall
patent: 4205267 (1980-05-01), Williams
patent: 4233573 (1980-11-01), Grudkowski
Inaba et al., "An Electrostatic Voltage Sensor Using Surface Acoustic Waves", 1982 Ultrasonics Symposium Proceedings, San Diego, Oct. 27-29, 1982.
Inaba et al., "An Electrostatic Voltage Sensor Using Surface Acoustic Waves", IEEE Transactions on Sonics and Ultrasonics, vol. SU-29, No. 6, Nov. 1982.
Kasahara et al., "An Electrostatic Voltage Sensor Using Surface Acoustic Waves", Proceedings of the 1st Symposium on Ultrasonic Electronics, Tokyo, Dec. 15-17, 1980.
E. Harnik and E. Sader, "Attenuation and Phase Velocity of Surface Acoustic Waves Interacting with Charge Carriers in this Metal Films", published Oct. 2, 1978.
H. Kuzmany, "Acoustoelectric Interaction in Semiconductors", Review Article, Phys. Stat. Sol. (a)25,9, (1974).

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