9.0 External DC Bias – Real Test Conditions for Power Transformers and Chokes
Power transformers and chokes that carry a high dc current are common in power supplies and inverters. Testing these parts at their rated dc current provides complete confidence that the parts have been correctly wound, assembled and terminated.
The Voltech DC1000 25A dc current supply will seamlessly integrate into the AT3600 or ATi test environment to provide up to 250A (10x DC1000 in parallel) of smooth, programmable dc bias current with minimal effect on the ac inductance measurement.
- 25A programmable dc current
- 250A with 10x DC1000
- Works seamlessly with AT3600 or ATi
- Unique “electronic inductor” design minimizes effect on the ac inducatnce measurement
- Can be used on almost any LCR meter. Alternative for Agilent, Wayne Kerr and Chroma types.
Tests for the DC1000 and AT3600 / ATi
| LSBX |
Inductance
with External
Bias (Series) |
1nH to 1MH |
1mV to 5V |
20Hz
to 3MHz |
0.5% |
| LPBX |
Inductance
with External
Bias (Parallel) |
1nH to 1MH |
1mV to 5V |
20Hz
to 3MHz |
0.5% |
| ZBX |
Impedance
with external
bias |
1m
Ω
to 1MΩ |
1mV to 5V |
20Hz
to 3MHz |
0.2% |