company news about What is the working principle of low frequency transformer?

High-frequency transformer test methods Generally speaking, the required test items for high-frequency transformers are:

1. Inductance

2. Leakage inductance

3. Withstanding voltage

4. Insulation resistance Inductance and inductance test method concept:

Transformer primary inductance refers to when the secondary is open circuit Effective inductance test conditions of the primary winding:

The test conditions of the transformer are consistent with its working conditions.Due to the nonlinearity of the magnetization curve of the transformer core, when the frequency, AC voltage, and DC magnetizing current change, the effective permeability of the core also changes, which causes the change of inductance.Test conditions that must be specified for testing inductance:

1. Test frequency;

2. AC voltage across transformer or inductor;

3. DC magnetizing current.