Testing core saturation on inductors, chokes and transformers with the DC1000A DC Bias Current Source and your LCR meter
Using Agilent, Keysight, Wayne Kerr, Chroma LCR meters to measure Inductance under DC Bias.
If you are testing in development, and need to understand DC Bias current saturation response, or just need to confirm and maintain quality of production then the DC1000A gives you test under real life conditions.
The patent-pending design of the DC1000A Bias Current Source works with any LCR meter.
So now, testing and confirming inductance under DC Bias
is available to everyone
The Flexible DC1000A
- Easy to connect and operate, be up and running in minutes.
- Manual or remote programming - 0-25 Amps Current, Stackable to 500 Amps DC
- Best accuracy DC current and LCR measurement - for all inductors, filters, chokes and transformers.
- Compatible with any LCR meter including Agilent 4284A, Keysight E4980AL, Wayne Kerr 3255, 3260 Chroma 11021, 11022, 1061, 1062, 1075
Ready to try a DC1000A with your LCR meter?
Please contact us if you have ANY questions, or if you would like us to arrange a no-obligation Demo Unit for you.
Worked Example of LS measurements with DC1000 + DC Bias current
In this example, we have tested a Murata inductor for saturation, (1430430C - Inductor, 300 µH, 3 A, 0.14 ohm, ± 10%).
The saturation measurements were performed using a Keysight E4980AL LCR meter to record the series inductance (at 1 kHz, 0.1 V AC), as we apply a varying DC Bias current provided by the DC1000A. (0-10A in 0.5 Amp steps)
For the E4980AL, it is important to have the HI/LO polarity of the DC1000 leads the same as the HI LO polarity of the LCR leads.
It is also critical that on the E4980AL that under MEASURE SET UP that DCI-ISO is set to ON.
An earth lead was used to connect the LCR and DC for best noise reduction (see picture) and the DC and LCR were both connected across the inductor (see below)
The results were plotted below.
We can see that the inductance holds up well under DC bias current, and does not saturate until above the published specified 3 Amps, and in fact only exceeds spec at around 5 Amps
Keysight E4980AL LCR Meter Quick Start Guide
See specific connection advice for the DC1000A with the popular Keysight E4980AL LCR Meter
Agilent HP4284A LCR Meter Quick Start Guide
See another example, this time using the Agilent HP4284 LCR meter, with added detail on compensation and best practices here.
General LCR Meter Advice
Get the full details on how to connect and operate a Voltech DC1000A DC Bias Current Source with an LCR meter.