What is A Transformer
There are generally two types of functions of transformers, one is voltage regulation, and the other is impedance matching.
First of all, let's talk about voltage rise and fall. Usually, we use various voltages, such as 220V for daily lighting, and 36V for industrial safety lighting, and the voltage of the welding machine needs to be adjusted. These cannot be separated from transformers.
Transformers can reduce the voltage to the voltage we need through the principle of electromagnetic mutual inductance between the main and secondary coils. In the process of long-distance voltage transmission, we need to increase the voltage to a very high level to reduce voltage loss, usually rising to several thousand or even tens of thousands of volts, which is the function of transformers. Impedance matching: It is common in electronic circuits to use a transformer for impedance matching in order to ensure smooth and unobstructed signal connection between output and input. For example, in old-fashioned broadcasting, because constant voltage output is used and speakers are all high resistance speakers, only output transformers can be used for matching.
So, daily life cannot do without transformers, and industrial production cannot do without transformers.
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