All in all, miniaturization, the inductance of the ferrite complanation element apply more aroused people's interest, believe in some high technology fields, planar high frequency transformer will soon replace traditional transformer, and gradually achieve large-scale production.
operating principle of transformer
The schematic diagram of the working principle of the transformer is shown in figure 1. high frequency transformer primary winding and secondary winding is equivalent to two inductors, when the ac voltage to the primary winding is formed on the primary winding electromotive force, to produce alternating magnetic field, the secondary winding is the role of the primary winding, also produce the same as the primary winding magnetic field change law of induction electromotive force (voltage), and the secondary winding output voltage, this is the variable voltage transformer.
The output voltage of the high frequency transformer is related to the number of turns of the winding. Generally, the ratio of the output voltage to the input voltage is equal to the ratio of the number of turns of the secondary winding N2 to the number of turns of the primary winding N1, that is, U2/U1=N2/N1. The output current of the transformer is inversely proportional to the output voltage (I2/I1=U1/U2). Normally, the output voltage of the step-down transformer is reduced, but the output current is increased, and it has the ability to output strong current.