Easy and accurate automatic measurement of DC bias characteristics such as power inductors
DC bias tester
Maximum DC bias
: 30A
Maximum ripple
: ±6A
Measurement frequency (sine wave)
: 10kHz~3MHz
Measurement frequency (square wave)
: 10kHz~1MHz
(Duty10%-90%)
SMD power inductor

SMD power inductor

Toroidal coil

Toroidal coil

DC bias non-sinusoidal

Square wave (triangular current flowing through the sample = pseudo chopper), superimpose DC on the sine wave to measure magnetic characteristics






Measurement example of chip inductor (chopper excitation)

Measurement example of chip inductor (chopper excitation)

In real circuits, DC and AC magnetic fields are often applied to magnetic parts, and it is important to measure the magnetic properties that change due to DC bias.



Measurement part

ferrite
L=1.0μH

Graph
Graph




Measurement part

Fe-Based amorphous
L=311μH

Graph




Measurement part

iron powder
L=8.4μH

Graph
Graph

  • The DC bias tester is an option only for SY-8218 and SY-8219, so it cannot be used with other equipment.
  • It needs to be adjusted with the B-H analyzer main unit at the time of shipment.
  • If you already have the main unit (SY-8218/8219), you will need to take it back to our factory for adjustment.