Feedback circuit for a semiconductor active element sensor

Details Feedback circuit for a semiconductor active element sensor Feedback circuit for a semiconductor active element sensor

1983-11-22

1986-12-30

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307304, 307119, 357 26, 328 5, 340365C, 340562, 73777, 73780, H03K 3353, H03K 5153, H01L 2720, G01L 122

Patent

active

046330992

ABSTRACT:
The drain voltage of an IGFET having a channel responsive to the change in physical quantity to be measured is negatively fed back to the gate terminal of the IGFET. The negative feedback loop includes series connection of a first amplifier having an amplification factor larger than unity and a second amplifier having an amplification factor smaller than unity. The interconnection point between the first and the second amplifiers is connected to the output terminal. There is provided a stable, highly sensitive and highly reliable semiconductor sensor.

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Manell, "CMOS Inverters Implement Finger Touch ON-OFF", EDN Magazine, p. 90, Jan. 5, 1978.
Fink et al, Electronics Engineers' Handbook, pp. 16-15 through 16-18, 1982.

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