What is an inductor, and what are the methods to identify its quality? 6

4. Frequency response measurement method

The frequency response measurement method is a way to distinguish the quality of an inductor and detect its frequency response characteristics. Connect the inductor to the test circuit, use a signal generator to generate a signal of a certain frequency, measure the voltage and current waveforms of the inductor through an oscilloscope, and analyze the frequency response characteristics of the inductor based on the waveforms. If the frequency response characteristics of the inductor are unstable or distorted, it indicates that there may be internal damage or iron core saturation in the inductor.diode

5. Thermal stability measurement method

Thermal stability measurement method is a way to distinguish the quality of inductors and detect their temperature stability. Connect the inductor to the test circuit, use a constant temperature bath or incubator to control the temperature of the inductor, measure the inductance value and quality factor of the inductor, and other parameters. If the inductance value and quality factor of the inductor vary greatly with temperature, it indicates that the temperature stability of the inductor is poor.diode

In short, there are many methods to distinguish the quality of inductors, and the appropriate method can be selected for detection and judgment according to the actual situation. When using inductors, attention should be paid to protection and maintenance, and faulty inductors should be replaced in a timely manner to ensure the normal operation of the circuit.diode