US PATENT SUBCLASS 374 / 173
.~.~.~ By feedback in amplifier circuit or with constant current source in circuit


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



374 /   HD   THERMAL MEASURING AND TESTING

100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13}
163  DF  .~ By electrical or magnetic heat sensor {13}
172  DF  .~.~ With compensation for sensor nonlinearity or lead impedance {1}
173.~.~.~ By feedback in amplifier circuit or with constant current source in circuit


DEFINITION

Classification: 374/173

By feedback in amplifier circuit or with constant current source in circuit:

(under subclass 172) Subject matter wherein the signal modification is performed by either feedback circuitry of an amplifier, or circuitry of an amplifier, or circuitry including a constant current source.