Detectors of parameters adapted to act on the force of attractio

Details Detectors of parameters adapted to act on the force of attractio Detectors of parameters adapted to act on the force of attractio

1978-04-25

1980-10-07

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

Including ionization means

250376, G01T 1185

Patent

active

042270863

ABSTRACT:
The device is able to detect the exceeding of a given threshold by a parameter, other than an electric voltage, capable of affecting the electrostatic force of attraction exerted between a charged electret and one, of two electrodes between which said electret is placed, said parameter being for instance an ionizing radiation. The two electrodes are at the same electric potential and the device also comprises return means for urging the first electrode and the electret permanently apart, and means for using the relative displacement of said elements, when it occurs, for desired detection purposes.

REFERENCES:
patent: 3436542 (1969-04-01), Ganouna-Cohen
patent: 3878496 (1975-04-01), Erickson

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