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The application circuit of bridge sensor signal conditioner

2016-05-19 09:40  
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The application circuit of bridge sensor signal conditioner 1B32 macthed with multi-channel pressure sensor
The excitation power can drive multiple bridge sensors after passing AD542 and TIP32. AD542 is the operational amplifier which uses Bi-FET as input stage for the starting buffer. TIP31 is the epitaxial NPN power transistor, and its maximum reverse voltage is 45V, and the maximum collector current is 3A, the maximum power consumption is 40W. The circuit can provide +10 V, 300mA excitation source in the temperature range of -25 ~ +80 ℃. When 1B32's 333.3 GAIN is grounded, the gain is set to 333.3 times.