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Closed Loop Hall Effect

Hall effect current transducers (C/L)

(Closed Loop = C/L)

 

Operation principle

 

Closed loop - hall effect current transducers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The magnetic flux created by the primary current lp is balanced by a complementary flux produced by driving a current through the secondary windings. A hall device and associated electronic circuit are used to generate the secondary (compensating) current that is an exact representation of the primary current.

 

Features:

  • Wide frequency range
  • Good overall accuracy
  • Fast response time
  • Low temperature drift
  • Excellent linearity
  • No insertion losses

 

Hall Effect Voltage Transducers (C/L)

 

Operation principle

 

Closed loop - hall effect voltage transducers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A very small current limited by a series resistor is taken from the voltage to be measured and is driven through the primary coil. The magnetic flux created by the primary current IP is balanced by a complementary flux produced by driving a current through the secondary windings. A hall device and associated electronic circuit are used to generate the secondary (compensating) current that is an exact representation of the primary voltage. The primary resistor (R1) can be incorporated or not in the transducer.

 

Features:

  • Measurement of high voltages
  • Safety isolation
  • Good overall accuracy
  • Low temperature drift
  • Excellent linearity