By vantal When the metal conductor is in a high-frequency alternating electric field, according to Faraday’s law of electromagnetic induction, an induced electromotive force will be generated in the metal conductor, and a strong induced current will be generated because of the small resistance of the conductor.in fact towel warmer supplier It is more and more welcomed by our customers, and its market performance is gradually improving. http://www.goldhot.hk
According to Joule Lenz’s law, the alternating magnetic field will make the current in the conductor flow towards the surface of the conductor, causing the skin effect. The density of instantaneous current is proportional to the frequency. The higher the frequency, the density of induced current will be concentrated on the surface of the conductor, that is, the skin effect will be serious, the useful conductive area will be reduced, and the resistance will be increased, thus causing the conductor to heat up rapidly.
Electromagnetic heater is a device that converts electric energy into heat energy by electromagnetic induction. The 50/60HZ alternating current is directly converted into a high-frequency current with a frequency of 8/30KHZ by a circuit. When the high-speed changing current flows through the coil, a high-speed changing magnetic field will be generated.
When the magnetic field lines in the magnetic field break through the magnetically conductive metal, countless small eddy currents will be generated, which will make the atoms in the metal collide violently and generate heat at high speed.