What is the effect of the DC relay coil on the AC current?

What is the effect of the DC relay coil on the AC current?

The magnetic field generated by the exchange is weak and can not be used.

Simply can not use. In order to prevent the core in the AC magnetic field in the eddy current, AC relay (including AC contactor) is the silicon core stack, and transformer core almost. DC relay does not exist eddy current problems, the core can be used as a whole piece of electrical iron and other soft magnetic materials. If the DC relay connected to the AC, the core will be due to eddy current and heat, can not work properly, and may burn the coil.

The magnetic field generated by the exchange is very weak and can not be used. DC relay does not exist eddy current problems, the core can be used as a whole piece of electrical iron and other soft magnetic materials. If the DC relay connected to the AC, the core will be due to eddy current and heat, can not work properly, and may burn the coil. Once the DC solenoid coil into the AC, due to greater resistance, so the current flow will be very small, so it will not work properly. AC electromagnetic coil access to the DC power supply, it will burn the coil. Because the impedance of the AC is mainly resistance rather than resistance, that is the AC coil resistance is very small, connected to the DC circuit when the current will be great, So soon will burn out. A device that generates electricity. In the outer core of the core with its power to match the conductive winding, this current coil like a magnet with magnetic, it is also called electromagnet (electromagnet). We usually make it into a bar or hoof shape, so that the core easier to magnetize. In addition, in order to make the electromagnet off power immediately degaussing, we often use demagnetization of soft iron or silicon steel material to make. This electromagnet in the power when there is magnetic, power after the magnetic disappeared. Electromagnets in our daily life has a very wide range of applications, because of its invention also makes the power of the generator has been greatly improved.