Differential pyroelectric sensor with static discharge
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United States of America Patent
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-
Mar 13, 1984
Grant Date -
N/A
app pub date -
Jul 29, 1981
filing date -
Jul 29, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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