The isolation transformer works on the law of electromagnetic force induction. The working principle of the isolation transformer is straightforward. In an isolation transformer, the coils turn numbers are the same between the primary and secondary windings.
Isolation Transformer Magnetic Core
The primary and the secondary windings create an electromagnetic effect in the core when primary windings are connected with the AC source, and secondary windings are connected with the load. An insulate faraday restained sheet separates the two windings from the physical connection.
Isolation Transformer Working Principle
The isolation transformer working principle is very simple. The coil turn numbers are the same between the primary and secondary windings. According to the EMF induction, a magnetic flux creates into the primary winding core. It transmits the same quantity of voltage and current into the secondary winding-core without a physical wire connection. The isolation transformers’ main working principle describes with an example:
Suppose the power of an isolated transformer is 220 volts and 5 amperes. This means that the output voltage of this transformer will always be 220 volts and 5 amperes, even if the voltage or current in the primary windings increases.
We know, in an isolation transformer, Np=Ns, Vp=Vs, Ip=Is. But it passes a certain voltage and current every time and protects the electronic devices connected to the load.