DC1000A 25A DC Current Bias supply and the Voltech AT Series Testers
The DC1000A DC Current Bias Supply works seamlessly with any Voltech AT Series transformer tester. (AT5600, AT3600, ATi)
Once connected, you simply program the LSBX LPBX or ZBX tests in the AT program sequence in the usual way, and the AT tester will automatically control the DC1000 for these tests.
In production, the DC1000A is very easily integrated into the complete AT Series environment providing all the benefits that 1000's of customers expect from Voltech
Fully Comprehensive Testing
One station testing including Inductance, Capacitance, DC Resistance, Turns Ratio, Leakage Inductance, Insulation Resistance, Hi-Pot and DC Bias.
Simple PASS / FAIL judgement or full measurement results.
FAST: Up to 10 DIFFERENT tests per second.
Safety Interlock system fully integrated.
Integrated control of all tests
Simple programming. AT test programs seamlessly control the Transformer Tester AND the DC Bias unit.
Just add DC1000A's to your existing AT Series transformer test system as you require them.
For designers and QA sample assurance, the Voltech DC1000A is an ideal tool to determine precise magnetisation characteristics.
Test Example Of Inductor under Bias
We have used the AT5600 + DC1000A here to test a MURATA 1447440C Inductor, 470uh +-10%, rated to 4A.
An AT5600 test program was written (see right) to measure Series Inductance, at 10Khz, 0.7VAC in the presence of 0-20A DC bias.
The program was run from the AT Editor
During the test, the AT sets the DC1000 automatically to the required currents, then waits for stabilisation, then measures the inductance.
Results are shown below
Download the test program as a PDF here
Download the AT test program (ATP file) here. requires AT EDITOR installed to open.
The sweep shows the classic saturation curve for an inductor under DC BIAS.
The part performs well, and even though rated to 4A, it only exceeded its spec ( +/-10%) after 7A DC A is applied.
The 20 measurements took around 40 seconds to complete.
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