Differential pyroelectric sensor with static discharge

Details Differential pyroelectric sensor with static discharge Differential pyroelectric sensor with static discharge

1981-07-29

1984-03-13

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250342, G01J 510

Patent

active

044370032

ABSTRACT:
A dual pyroelectric crystal sensor, connected electrically in series opposition to provide ambient temperature compensation, drives a single ended amplifier. The load resistor for the sensor is a center tapped high megohm resistor with the center tap connected to the common electrode connections between the dual crystals to bleed off static charges that build up on the sensor due to the very high impedance of the crystal material.

REFERENCES:
patent: 4336452 (1982-06-01), Baker
patent: 4367408 (1983-01-01), Imai et al.

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