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The primary coil has to induce current in the secondary coil. The only way this can happen is if there is a varying magantic field in the primary which then will induce a varying mag field in the secondary which results in a current in the sec.
Only varying current can induce a varying mag field only a varying mag field can induce current
So you need a varying current in the primary. D.C. is not a varying current so it cannot induce a mag field in the coil.
A.C. (it does not have to be +/- it just has to be varying) can do so.
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Can you use transformer for DC supply?
No. Only Transformer could not be used for DC supply.If yoy need to have DC out put,then rectifier unit required .
Why transformer cannot work on dc voltage?
In DC, flow of current is controlled by resistance only where as in AC it is done by Impedance which is combination of Resistance , inductive and capacitive reactances.Reasons:In transformers resistance of the transformer's core windings are very low due to which if you will connect transformer across DC supply then it will draw a heavy current which will burn out is winding and it may damage the equipment too.Transformers works of the principal of Induction (Mutual/Self) that is possible in AC only because in DC there is no induction therefore even if transformer's windings anyhow withstand with DC there will be no voltage output at output terminals of the transformer, therefore it is useless to connect transformer on DC supply.
Can a constant dc current induce a steady state voltage in a transformer?
No. A constant DC current of sufficient magnitude induces smoke in a transformer.
Why does a transformer only work for AC supply and not DC supply?
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.
What is a flyback inverter?
fly back inverter is such kind of DC-AC inverters which use the flyback transformer for the low dc-high dc stage of the inveter shortly it's DC to AC inverter with flyback transformer inside .
How does a DC transformer work?
transformer cannot be worked on DC because as the dc is constant there will be no change of flux & may lead to shot circuit.
How does auto transformer work with DC supply?
Transformers don't work with DC supplies - they only work on AC.
If DC is applied to the primary of a transformer is there any current in the secondary and if there is then whether ac or DC?
first, understand that a transformer is an AC DEVICE. it wont work on dc...
Do pulse transformer is work on dc supply?
hthhrhr
Why doesn't transformer work on a DC supply?
to have transformer action there should be an alternating magnetic flux.but dc supply cannot produce alternating flux.
Does electrical transformer use a DC or AC source?
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.
Can booster transformer be used in dc distribution system?
No. Transformers work in AC systems, not in DC systems.
Can a transformer work using dc?
no. because if we use dc source for transformer there will be no production of energy for the secondary side since they are mutually conducted, as the transformer is a static device which can transmite the energy from one circuit to other with out changing the frequency and also there is no movement of the conductors. in order to produce the emf there should be either conductor movement or moving flux so the dc source will produce constant field flux hence there is no production of energy in the secondary side.
If Transformer on a DC circuit?
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.
Why doesn't an AC appliance operate on DC?
Anything with a transformer in it will not work on DC because the transformer will draw enough current to blow the fuse (or catch fire) because transformers must always have a changing voltage. A simple heater will work on AC or DC. Appliances with most types of motor will only work on AC.
DC current is not used in transformer?
No. Transformers rely on the magnetic field changing direction to work, so DC can't be used.
Transformer are used in circuits containing both dc and ac?
No transformers only work with AC.
