Thursday, February 2, 2012

What is the kind of transformers used in mobile chargers?

They seem pretty small and lightweight when compared to old AC/DC adapters.In what name they are known.Don't they have an iron core?What is the kind of transformers used in mobile chargers?Most of them now use a modern switching power supply. It has less iron in the transformer, smaller filter capacitors and generally smaller components. They have better regulation of the output too.What is the kind of transformers used in mobile chargers?Exactly no transformers used in cellular phone chargers of present. This is because the batteries need small current in the range of 100mA to charge them up. So some simple regulator ICs can do this well. Now, do we need a heavy iron core and copper coils?

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