Amplifier converting charge signal

Details Amplifier converting charge signal Amplifier converting charge signal

2006-05-23

2006-05-23

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C330S009000, C330S174000, C327S306000, C327S307000, C123S395000, C123S052100

Reexamination Certificate

active

07049729

ABSTRACT:
A positive charge of a sensor element is charged in a signal converting circuit, is converted into a positive voltage, and is outputted. When the polarity of the charge of the sensor element is inverted to the negative and an output of the signal converting circuit is decreased, the leaked charges are superimposed and become the negative. An automatic correction circuit detects the negative output and discharges the charges so as to set the input to “0”. Thus, the offset of the signal level due to the charge leakage is automatically corrected.

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European Search Report for corresponding application No. EP 04 00 6608, dated Feb. 8, 2006.

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