DC Bias Current Source

Authorized Microtest distributor in Germany

What is a DC bias current source?

A DC bias current source delivers a defined direct current to measure inductors and magnetic components under real load — combined with an LCR meter or impedance analyzer.

Bias current up to 40 A per unit, cascadable
Realistic test conditions instead of lab-only evaluation

Device Comparison

Microtest

DC Bias Current Source 6220

Output Current: 20A max.
Max. Frequency: 3MHz (with 6632)
Power Consumption: 320W max.
Software: optional

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Microtest

DC Bias Current Source 6223

Output Current: 20A max.
Max. Frequency: 10MHz (with 6632)
Power Consumption: 320W max.
Software: optional

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Microtest

DC Bias Current Source 6225

Output Current: 20A max.
Max. Frequency: 30MHz (with 6632)
Power Consumption: 320W max.
Software: optional

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Microtest

DC Bias Current Source 6240

Output Current: 40A max.
Max. Frequency: 3MHz (with 6632)
Power Consumption: 640W max.
Software: optional

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Microtest

DC Bias Current Source 6243

Output Current: 40A max. (DC Bias max. 320A)
Max. Frequency: 10MHz (with 6632)
Power Consumption: 640W max.
Software: optional

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Microtest

DC Bias Current Source 6243H

Output Current: 40A max. (DC Bias max. 320A)
Max. Frequency: 10MHz (with 6632)
Power Consumption: 640W max.
Software: optional

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Where are DC bias current sources used?

Used in development, pre-series, and series testing of power electronics.

This enables reliable decisions for design, purchasing, and production.

Evaluate impedance and inductance under DC bias
Compare saturation behavior
Validate material and component selection

Which accessories are recommended?

Stable DC bias measurements require robust contacting and suitable interfaces.

Results stay comparable despite high loads.

High-current cables and connect plates
Suitable fixtures and secure contact points
Measurement accessories for reproducible setups

What questions does the test answer?

Measuring with a DC bias current source answers key practical questions:

How does the component behave under real load?
When does saturation begin, and how large is the margin?
Which variant is safest for series production?
How can the risk of field failures be reduced?

Why Kust Elektronik?

Kust Elektronik combines DC bias expertise with practical implementation.

Teams make confident decisions for quality and deliverability.

Support with test strategy and limit definition
Integration into existing quality processes
Service, support, and long-term partnership

Laden...

DC Bias Current Source

Authorized Microtest distributor in Germany

What is a DC bias current source?

A DC bias current source delivers a defined direct current to measure inductors and magnetic components under real load — combined with an LCR meter or impedance analyzer.

Bias current up to 40 A per unit, cascadable
Realistic test conditions instead of lab-only evaluation