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How to distinguish whether the electronic components in the mobile phone are capacitors or inductors

Source: Industry News Editor: PingShang Click: Release time: 2022-01-15 09:02:12

How to distinguish whether the electronic components in the mobile phone are capacitors or inductors

 Mobile phone, an electronic device that almost everyone owns, if there is a problem with the mobile phone, we will definitely repair it as soon as possible. After all, we don’t know how to spend the time without a mobile phone. When the technicians disassemble the mobile phone for repair , If you have learned some circuit knowledge, it will be novel to see that the circuit board of the mobile phone is actually familiar to you, but you are not sure whether it is a chip inductor or a chip capacitor. Let me answer it below.

First of all, distinguish by color, which is also an intuitive observation. The most correct way is to test it with a multimeter, which will make you feel more at ease.文章配图03

The test method is as follows:

  Use the characteristics of inductance to test and analyze: multimeter positive and negative, ohm modulation *10 or *100, the pointer generally hits the bottom is the inductance, if the multimeter is positive and negative, it does not move, or it moves but does not hit the bottom is generally capacitance.

  You don't need a multimeter, but you want to tell the difference? Yes, but make sure it's not on the phone's motherboard.

  Packaging distinction: If it is a plate, we can look at the label above and distinguish according to the unit. The unit of inductance is H.mH, uH, nH, and the unit of capacitance is f, uf, pf, nf.

  Appearance distinction: From the appearance point of view, the color of the capacitor should be darker, slightly yellow or black, and the color of the chip inductor does not have the yellowish color, and it will not be very black.

  In fact, the simplest and most effective test is to use a multimeter, which has high accuracy. Measure both ends through the conduction gear of the multimeter, and listen to the sound of the buzzer. If there is a sound, it is a chip inductor, and if it does not, it is a chip capacitor.