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When we select and determine the use of inductance coils, the first thing we think of is the quality of inductance coils and whether they are tested according to standards. Therefore, inductance coils must be strictly tested when they are used. In fact, the whole process is very simple. The editor of positron will briefly describe the detection method of inductance coil.
1. Detect the Q value and inductance of the inductor
Inductance coils include but are not limited to choke coils, low-frequency choke coils, oscillating coils, etc. Most of the inductor coils are made non-standard according to customer product requirements, because they have to be customized according to actual needs, so this type of situation is complicated Many. In order to ensure the quality of the inductance coil, the inductance needs to be inspected. If you want to detect the quality of the inductance coil more accurately, you need to detect the inductance and Q value of the inductance coil. This requires professional instruments. This is generally not done in normal work. Detection can be performed by checking whether the coil is energized or not, and the size of the Q value

2. Detect the inductance coil with a multimeter
Measure the DC resistance of the coil through the resistance profile of a multimeter and compare it with the required resistance. If the measured resistance is much larger than the required resistance, or the pointer tends to be wireless, it can be judged that the coil is broken, such as resistance. If the value is very small, there may be a short circuit. Once these two conditions are determined, you can determine that the coil is broken and cannot be used without further testing. If it is detected that the resistance value is not much different from the required value, it can be determined that the coil is good.