[SOLVED] current sensing amplifier

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Saddique159

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Hi,

I am university student. I have chosen a project of digital voltmeter and ammeter. Well voltage in not problem. But I am having problem in ammeter circuit. can any one suggest me current sensing IC or Current sensing amplifier.

thanks in advance.
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If you know how to measure voltage measuring current should not present big problem ..
Simple current to voltage conversion can be done on a shut resistor, and voltage across resistor is measured as R[sunt] * I ..
If needed, you can amplify or scale the voltage using opamps or by selecting R[shunt] in such a way that the reading is “nicely” proportional to current in mili-Amps or Amps ..
See:
Ammeter design : DC METERING CIRCUITS

IanP
;-)
 
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