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Converting current to voltage transducer circuit Using LM107

2016-01-18 20:27  
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Converting into voltage is undesirable for two reasons: first, an impedance is inserted into the measuring line causing an error; second, amplifier offset voltage is also amplified with a subsequent loss of accuracy. The use of a current to voltage transducer avoids both of these problems. This is current to voltage transducer circuit. The input current is fed directly into the summing node and the amplifier output voltage changes to extract the same current from the summing node through R1. The scale factor of this circuit is R1 volts per amp. The only conversion error in this circuit is Ibiaswhich is summed algebraically with IIN. Here is a schematic drawing :

Converting current to voltage transducer circuit Using LM107 Converting current to voltage transducer circuit Using LM107

Source Circuit : National Semiconductor Application


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