The reason why the inductive electromagnetic coil of the patch is hot is that the resistance of the inductive electromagnetic coil is very low, and a considerable current will be generated when the working voltage of 220V is applied, so it is possible to try to increase the working voltage frequency, increase the frequency, increase the induction and decrease the current.
(1) the line passing through is small, which will cause the current of the chip inductor to be quite large, and when the effective value is constant, the heating of the wire rod is normal;
(2) The inductance is saturated, and this kind of heating is also very extensive;
(3) There are working voltages with large vibration on both sides of the inductor;
It is suggested to replace the magnetic core, which can reduce the number of turns and the length of wire. In the excitation conversion of positive output power inductor manufacturers, the harmonic distortion current is small and the magnetic loss is small, mainly due to resistance heat. Check the filter capacitor. If the capacitor is invalid, the chip inductor will overheat and fade.
Is the SMD inductor bead connected behind the rectifier tube? If the filter capacitor is developed at the front end of the inductor, please check whether it leads the way.
At this time, the switching power supply has two identical inductances, one in the positive stage and the other in the negative stage (no damage). The controllable field tube in front of the inductor has no other capacitors. According to these two inductors connected in series with one positive and one negative, the electromagnetic coil is connected to the power supply, and the control plan of the front-end development water pipe is single pulse DC.
(1) If the wire becomes thinner, the resistance will increase. Under the condition that the effective value of the current is constant, the heating of the telephone pole is normal;
(2) There are working voltages with large vibration on both sides of the laminated inductor;
(3) The inductance of the patch is saturated, and this kind of heating is also very extensive, so the number of turns of the coil can be reduced and the length of the wire can be reduced. Positive conversion, small harmonic distortion current, small magnetic loss, mainly resistance heat;
