DC1000 Test Configuration With an LCR Meter
Inductance characterization may be performed manually. (Contact Voltech for availability of PC software for automated characterization). For manual testing current is adjusted via the front panel control knob. Inductance measurements are then read from the LCR meter as normal.
A spreadsheet may be used to complile of the dc current vs inductance characteristic. From this data a saturation plot can be made.
(Follow detailed LCR setup and compensation instructions for the specific LCR meter in use).
Manual test configuration
Carrying out a manual measurement:
- Connect the DC 1000 to the inductor DUT
- Connect the LCR meter to the inductor DUT
- etup the LCR meter as normal. Compensate the measurement with the DC1000 output ON but delivering 0.00 Amps.
- Adjust the DC1000 via the front panel control knob for the required current step and measure inductance value (Ls) on the LCR meter.
- Compile a spread sheet and graph of current vs inductance to observe inductance variation and eventual saturation.
- Reduce the DC1000 output to 0.00A and swirch the output OFF.
- Disconnect the LCR meter.
- Disconnect the DC1000.
- Ensure that open and short circuit correction is performed with the LCR meter before starting tests
- Ensure LCR and DC1000 probes are connected as shown above in this order and disconnected in the reverse order.
From these results the user can see when the inductance value reduces at higher current and determine the design margin available. With the precise and easy-to-use DC1000 it is possible to speed up the design process and avoid designing with large margins, often reducing the core size required.
Accurate manual testing with the Voltech DC1000 and Agilent LCR meter
The Voltech DC1000:
- Works with most LCR meters.
- 25A of smooth, easy-to-control dc current output.
- Stackable to 250A.
- Minimum effect on the LCR measurement up to 3 MHz providing accurate inductance, permitting superior accuracy LCR measurements.