| 摘要 |
The circuit includes a reference voltage supplying circuit (1000) supplying the stable power regardless of the temperature variation. The output of the circuit (1000) is amplified by an amp. (2000) having a positive temp. coeff. to compensate the resistance for the pressure sensor having a negative temp. coeff.. A pressure sensing circuit (3000) designed in a bridge type for offsetting the non-linear elements distributed in the circuit provides the output to a microprocessor through a multi-vibrator (7000) converting the output to the signal of certain frequencies.
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