Testing Chokes and Transformers with High-Current DC Bias
Considerations For Accurate High Power Inductor Testing
Inductors play an important part in all kinds of power
electronics equipment. They are crucial components that must perform
satisfactorily over a wide range of operating conditions, for example
providing energy storage as part of a power supply smoothing filter
circuit from minimum to maximum rated dc current output. It is thus
important to check the dc current carrying ability of the choke at maximum
current to ensure that it has been manufactured correctly, using the
correct cores and wire.
For low power applications, wound components may be
checked using an LCR meter only. Typical tests will be inductance (L) and
quality factor (Q).
Testing Low-Power Inductors with an LCR Meter.