초록 ▼

A feedback circuit for generating an output signal from a sensor that makes changing electrical and temperature characteristics of the sensor and any sensing medium irrelevant. The sensor is placed in the forward loop of the circuit to make the output depend on the area of the parallel plates the se

A feedback circuit for generating an output signal from a sensor that makes changing electrical and temperature characteristics of the sensor and any sensing medium irrelevant. The sensor is placed in the forward loop of the circuit to make the output depend on the area of the parallel plates the sensor, not on any electrical or temperature characteristics of the sensor or sensing medium. A liquid filled sensor having parallel conducting plates, one solid and the other being split into two differential plate sections may be used in the forward loop as a liquid level sensor or an inclinometer. Alternative sensors such as inductive sensors may also be used.

대표청구항 ▼

[ What is claimed is:] [1.] A circuit for generating an output signal, driven by an input signal, said circuit comprising:a sensor having two input points and an output point;said sensor comprising:a movable medium: andtwo signal generating elements connected in the circuit to each generate an inter

[ What is claimed is:] [1.] A circuit for generating an output signal, driven by an input signal, said circuit comprising:a sensor having two input points and an output point;said sensor comprising:a movable medium: andtwo signal generating elements connected in the circuit to each generate an intermediate output signal determined by the position of said movable medium relative to said signal generating elements, each intermediate output signal connected to said output point;said two input points connectable to the input signal;an amplifier;said output point connected to an input of said amplifier; andeach of said two input points connected to the output of said amplifier; whereby the output signal correlated to the position of said movable medium is generated.