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== Current Sense Resistor ( Shunt Resistance ) ==
 
== Current Sense Resistor ( Shunt Resistance ) ==
  
A current Sense Resistor is a low value of resistor that is placed in series with some other circuit.  We can then measure the voltage across the resistor to compute the current.  If the resistor has a low value compared to other components we can ignore the effect on the circuit.  We use the word shunt when the voltage is measured by a device that has a fairly low resistance itself.  We then have to do a more careful calculation of how the current is shared by the two devices.
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A current Sense Resistor is a low value of resistor that is placed in parallel with some other circuit.  We can then measure the voltage across the resistor to compute the current.  If the resistor has a low value compared to other components we can ignore the effect on the circuit.  We use the word shunt when the voltage is measured by a device that has a fairly low resistance itself.  We then have to do a more careful calculation of how the current is shared by the two devices.
  
 
Circuit:
 
Circuit:

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