Measuring inductance with DC amps flowing through
Measuring inductance with DC amps flowing through
(OP)
I have a spec requirement to check the inductance of some potted inductors used in a custom switching power supply. Their value is between 20 and 200 micro-Henrys but the spec calls out DC bias currents up to 6 amps while measuring!
Spec calls out f=10KHz 0.1Vrms measurement. Need 0.1uH resolution and 3%-5% accuracy.
What circuit can I use to isolate that big bias current from my RLC bridge? A simple capacitor?
Just to make it interesting, I need to measure them while running a temperature sweep from +85C to -40C and back!
Thanks!
Spec calls out f=10KHz 0.1Vrms measurement. Need 0.1uH resolution and 3%-5% accuracy.
What circuit can I use to isolate that big bias current from my RLC bridge? A simple capacitor?
Just to make it interesting, I need to measure them while running a temperature sweep from +85C to -40C and back!
Thanks!
Kevin VanZuilen "KevinVZ"





RE: Measuring inductance with DC amps flowing through
Let me know if you get anything.
PVVentura
RE: Measuring inductance with DC amps flowing through
RE: Measuring inductance with DC amps flowing through
RE: Measuring inductance with DC amps flowing through