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what happens when increase the resistance using in the measuring resistance?

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swethamenon

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Actually measuring output voltage across a resistance in LEM sensors for DC measurement.Input voltage is stepped down here.
Im using 100ohm resistance in the output instead of that if use 330ohm what is the effect on output..if there any effect on DC or AC input??
 

The effect is of variation in current being fed to the output. Using a high resistance will result in more current being fed towards the output. But if you use the isolation between the measuring device and your Transducer, then you may not have to worry about the current. higher value of resistance is usually preferable.
 

Shunt resistors should be chosen within the specified range, considering available supply voltage and maximum output current with intended input voltage range, The LEM datasheets are basically clear in this regard.
 

input voltage maximum 35v..so it is preferred to use 330ohm..??
currrent is more for higer resistance
 

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