What is a booster transformer and how does it work?

In many electronic application scenarios, people will use the booster transformer, but we may not know the working principle of the booster transformer, so it is very troublesome at the time of selection.

The booster transformer works on the principle that when there is AC current in the primary coil, the AC magnetic flux will be generated in the iron core (or magnetic core), so that the voltage (or current) is induced in the secondary coil. The transformer consists of an iron core (or magnetic core) and a coil. The coil has more than or equal to two windings. The winding connected to the power supply is called the primary coil, and the other winding is called the secondary coil. In a generator, whether the coil moves through a magnetic field or the magnetic field moves through a fixed coil, the electromotive force can be induced in the coil. In both cases, the value of the magnetic flux is constant, but the number of magnetic flux in the chain intersecting the coil is variable. This is the principle of mutual induction. A transformer is a device that uses electromagnetic mutual inductance to transform voltage, current and impedance.

According to the principle of electromagnetic induction, when a conducting object is exposed to a changing magnetic field, a current can be induced in the conductive body. When the transformer is connected to the AC network, the current is fed into the primary coil of the transformer, and a magnetic field is generated around the transformer. As the current direction of the input alternating current changes constantly, a magnetic field is generated that changes in step with the current. The generated magnetic field forms a closed loop along the transformer core. A current is induced in the secondary coil due to the changing size and direction of the magnetic field. Because the voltage across each coil is equal, the more turns of the secondary coil, the higher the voltage output from the secondary coil.

The booster transformer works on the principle of electromagnetic induction. The transformer has two groups of coils, primary coil and secondary coil, secondary coil outside the primary coil, when the primary coil through the alternating current, the transformer core produces alternating magnetic field, secondary coil induced electromotive force, the number of turns of the transformer is equal to the voltage ratio.