Liquid crystal applied voltmeter

Details Liquid crystal applied voltmeter Liquid crystal applied voltmeter

1976-06-01

1978-09-05

Bauer, Edward S.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Fluid

324 96, 350336, 350347, G02F 113

Patent

active

041123611

ABSTRACT:
A liquid crystal applied voltmeter in which a nematic liquid crystal is filled between a pair of light transmitting electrodes at both sides of which polaroidal plates are provided and at least one of the light transmitting electrodes comprises an electric resistance film to which a constant voltage power supply is connected so that a voltage gradient occurs across both ends of the electric resistance film wherein a border between the light transmitting part and the non-light transmitting part of the liquid crystal moves in response to variation of the measured voltage when the measured voltage is applied across both the electrodes.

REFERENCES:
patent: 2942131 (1960-06-01), Diemer et al.
patent: 3604938 (1971-09-01), Kohashi et al.
patent: 3667039 (1972-05-01), Garfein et al.
patent: 3675988 (1972-07-01), Soref
patent: 3732429 (1973-05-01), Braunstein et al.
patent: 3756694 (1973-09-01), Soref et al.
Ludeman et al., Liquid Crystal Cell Having Nonuniform Thickness, IBM Technical Discl. Bulletin, Sep. 1972, pp. 1349, 1350.

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