Importance

Loading Importance Indicators...

Abstract

An apparatus is disclosed for converting a physical quantity into variations in electric current. The apparatus comprises a power source, a control circuit for controlling an output amplitude of the power source, a detecting circuit supplied with the output of the power source, the electrical characteristics of the detecting circuit being varied in accordance with a physical quantity to be measured and ambient conditions, a converting circuit for amplifying the difference between a first electrical output of the detecting circuit and a reference value, and for converting the amplified difference into an output of the apparatus, and a negative feedback circuit for feeding back a portion of the output to the control circuit. A second electrical output of the detecting circuit is also input to the control circuit whereby the output of the control circuit controls the output amplitude of the power source.

Loading the Abstract Image...

First Claim