When selecting and using inductive coils, we should first think of the inspection and measurement of the coils, and then judge the quality and advantages and disadvantages of the coils. In order to accurately detect the inductance and quality factor Q of inductance coil, special instruments are generally required, and the test method is more complex. In practical w...

Inductance is the ratio of the magnetic flux of the conductor to the current producing the alternating magnetic flux generated in and around the conductor when the alternating current passes through the conductor. When DC current passes through the inductor, there is only a fixed magnetic line of force around it, which does not change with time; However, when AC cu...

Insulation structure is a structure formed by the combination of the same or several insulation raw materials through a specific process, which is called insulation structure. Focus on inter turn insulation, ground insulation and outsourcing insulation. If it is a three-phase motor, it will also touch phase to phase insulation. So what are the insulation structures...

At present, enterprises need to swipe their cards to get in and out of work, and they can only enter when they hear the sound of "drop", which is controlled by the induction coil of access control. Access control induction coil is divided into receiving coil and transmitting coil. Our ID card and IC card are receiving coils, and our access control system machine is...

Wireless charging technology has long been everywhere in our life. Wireless charging is very convenient. It can be charged directly on the charger, because it is welcomed by the majority of netizens. Of course, the emergence of wireless charging does not affect wired charging, because not every product can be charged wirelessly. Let's learn about the development tr...