Answer / sanjeet

no

Answer / sarthak sahani

no a dc cannot be used with the transformers as because dc has zero frequency due to which ther is no change in magnetic flux linked with the secondary coil .......as a result of which there is no induced emf in the secondary coil hence no output.

moreover a dc can't be used as it has zero frequency it offers very less resistance due to which current flow increases resulting harm to the primary coil.........

Answer / kiran

Yes we can go through this link:

http://electronic-
components.globalspec.com/learnmore/electrical_electronic_components/transf
ormers/switch_mode_transformers


I went to this link to find the answer of same question

Answer / g.ravikanth

It will be a dead short circuit when we connected DC supply
the Primary of a transformer,because there will be no self
inductance property for a conductor in DC .But there is a
alternative to step up the DC power using transformer ie
using converters or by amplifiers.

Answer / shanmu

We cannot step up power without any external source.But we
can step up votage only.

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