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Home » News » industry information » Test method for power efficiency(3)

Test method for power efficiency(3)

Views:5     Author:Site Editor     Publish Time: 2018-01-24      Origin:Site

Passive element measurement: magnetic element

Passive elements refer to elements that do not amplify signals or switch signals. The power supply uses a full range of passive components such as resistors and capacitors, but from a measurement point of view, the main focus is on magnetic elements (magnetic devices), especially inductors and transformers. Inductors and transformers are made up of iron cores wrapped in circles of copper wires. The impedance of inductor will increase with the increase of frequency, and the blocking effect to higher frequency is higher than that of lower frequency, so it is suitable for filtering the input and output current of the power supply. Helps determine some indicators of power performance.


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