| 摘要 |
A semiconductor pressure detector apparatus has a strain electric signal conversion bridge which is composed of four semiconductor strain gauge, and an amplifier which serves to hold, at a predetermined value, the sum of currents flowing through the bridge. The midpoints of two arms constituting the bridge are respectively connected to the noninverting inputs of two negative feedback amplifiers. Outputs from the two negative feedback amplifiers are applied to a differential amplifier.
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