When we are in contact with the transformer, first of all to have an understanding of its working principle, after we go to use, it will be a lot more convenient, let's take a look at the overall working principle of the transformer.
A winding transformer windings (a) after connected with the ac power, and through the alternating current magnetic flux in the winding, under the effect of the magnetic flux, the iron core in alternating magnetic flux, namely a winding from the power supply electrical energy into magnetic energy, at the same time pay (ring) in the core chain thick, vice winding (secondary winding), due to the electromagnetic induction effect, respectively, with the same frequency in the original and secondary winding induction electromotive force. If the secondary winding is connected to the load at this time, a current will flow through the load under the action of the induced electromotive force of the secondary winding, and the magnetic energy in the iron core will be converted into electrical energy. This is how a transformer USES electromagnetic induction to transfer electrical energy from a power supply to a load.
Under the action of the main magnetic flux, the coils on both sides generate induced potential respectively. The potential is proportional to the number of turns, and K is the transformer ratio.
The ratio of transformer current is inversely proportional to the number of turns of primary and secondary windings
The current on the side with more turns is small, while the current on the side with less turns is large. The transformer's original and secondary coil turns are different, which plays the role of transformer. When the primary side of the transformer is rated voltage, the secondary side voltage varies with the size of the load current and the power factor.
On 2018-08-08 11:45:46
