1. Electronic Transformer Principle - Introduction

Electronic transformer is the switching power supply, is the use of electromagnetic induction principle of transmission of electrical energy or electrical signals in the electronic circuit plays a boost, buck, isolation, rectifier, inverter, inverter, impedance matching, inverter, storage Can, filter and so on.

toroidal transformers with a small size, light weight, low price, widely used in various electrical appliances.

The most basic type of electronic transformer is two groups of wires around the coil inductively called together, when an alternating current (with a known frequency) flow in one group of coils, in the other set of coils will be Induction with the same frequency of the AC voltage, and the size of the induced voltage depends on the two coil coupling and the degree of magnetic cross-linked.

2. Electronic transformer principle - structure

The basic structural components of an electronic transformer are cores and windings, which make up the body of the transformer. In order to improve the cooling conditions, large and medium-capacity transformer immersed transformer body filled with transformer oil in a closed tank, the winding connection with the external circuit leads through the insulating sleeve. In order to make the safe and reliable operation of the transformer, also equipped with oil conservator, gas relays and airbags and other accessories. To sum up: electronic transformer core, winding, fuel tank, accessories and other components.

3. Electronic transformer principle - working principle

Although the size of electronic transformer from toroidal transformers manufacturers disparity, use different, but its basic structure and working principle is the same. It is made using the principle of electromagnetic induction, and its main function is to transfer electricity from one circuit to another circuit or transmit signals, power transmission or as an important component of signal transmission. Electronic Transformer Schematic The following figure shows:

The main component of the electronic transformer is a core and two windings on the core. The two windings have no magnetic coupling. When the transformer primary winding with alternating voltage, the core will produce alternating magnetic flux, respectively, in the two winding induction electromotive force e1, e2. According to the law of electromagnetic induction can write out the instantaneous electromotive force equation:

As long as the following two conditions can meet the purpose to change the voltage:

1) The amount of flux change

2) The number of turns of the primary and secondary windings is different.

www.xp-elec.com is a professional transformer manufacturer in China.

The Wall

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Added Nov 28 '16, 01:00AM

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