Chokes and inductors are used to control noise and ripple in power supplies and other power conversion equipment.
These chokes must continue to operate as AC inductors in the presence of the large DC output current of the converter.
To ensure the quality of the choke it must be tested at operating conditions with DC bias current present. An
AT Series transformer tester that is coupled to a DC1000 current bias supply will perform all the tests required
quickly and accurately.