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to have transformer action there should be an alternating magnetic flux.but dc supply cannot produce alternating flux.
Transformers don't work with DC supplies - they only work on AC.
The transformer cannot be used in the DC supply because it keeps on alternating its current, whereas the DC supply current should be constant.
Yes transformation will be possible for all Dc Pulse .
A transformer is a device to convert high voltage AC to low voltage AC & vice-versa. It works on the principle of induction. Since induction occurs only in an AC supply, a transformer cannot work on DC.. So, it is not possible to convert DC supply to AC using transformer. You would need an inverter to convert DC to AC.
If a DC supply is connected to the incomer of a transformer, you effectively have a short circuit, because the DC impedance of a transformer (actually, any inductor) is quite low. You will blow something.
A transformer makes and collapses a magnetic Field inside 60 times a second for home power in North America, 50 times a second in Europe. The building and collapsing of a magnetic field "Induces" a voltage in another transformer winding. DC current only creates a stable magnetic field and this will not create or induce voltage in the other winding. Normally covered in grade 5 science where I live.
If having DC and AC is required then a PWM pulse width modulator is required to chop the DC to make AC
when dc supply is given to transformer at primary winding , the output at secondary winding will be zero.Because to induce voltage ,countnie changing flux is required ,that can not be obtained from dc supply...........
No. Only Transformer could not be used for DC supply.If yoy need to have DC out put,then rectifier unit required .
Trsansformers work on mutual induction principle caused by the changing magnetic field. Since there is no changing magnetic field i.e there is no "+" and "-" cycle in DC source supply so transformer cant work on a DC source. Its core will become permanent magnet.
It will get core saturation