Transformer doubt

Mr.Don

@mrdon-92OwlG • Oct 22, 2024

Oct 22, 2024

981

Hi guys can a step up transformer raise a voltage of 10mV to 220V..

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silenthorde

@silenthorde-4BLPNZ • Aug 18, 2009

Theoritically it can. But practically (Asumming non-ideal power source able to deliver only finite power) it will be at the cost of extremely small current at the secondary.
saurabh2486

@saurabh2486-Tr6NOC • Aug 20, 2009

i think its a big transformation practically very difficult to achieve or may be impossible
Harshad Italiya

@harshad-ukH5ww • Aug 21, 2009

silenthorde
Theoritically it can. But it will be at the cost of extremely small current at the secondary.
Yes as already said by Biswarup you can step up it to high voltage but as the voltage current ratio remains constant there will be very small amount of current at secondary side.
Mr.Don

@mrdon-92OwlG • Aug 21, 2009

If we can be able to generate ..how much the size of it and the cost would be ...

can it be used for production of high voltages anywhere at anytime??
silenthorde

@silenthorde-4BLPNZ • Aug 21, 2009

Hi dileep,

The problem would be that the transformer would be extremely bulky. If you have to convert a signal from tens of mV to 100s of V. you will need a turns ratio of 10 raised to the power of 6.

Imagine the transformer losses, simply, the joule heating will be enourmous. Of course you can cool it. But why would you want to build something like that? our aim is not high voltge alone. We need High power.

as a solution you can cascade several small transformers to achive this signal ratio.
Mr.Don

@mrdon-92OwlG • Aug 21, 2009

just a practical doubt..well if we create more voltage it will also increses power also ...isn't it?
silenthorde

@silenthorde-4BLPNZ • Aug 22, 2009

Nope Dileep. Power is conserved from the primary to the secondary in a transformer. Just think for a while. Answer this questions.

Does the transformer have a seperate power source?

If your answer is no. Then where will the extra power come from? Therefore power is conserved from primary to secondary. The power at the primary is equal to the power at the secondary of a transformer.

So, if your i/p power to the primary is constant, stepping up the voltage (potential transformer) will lead to a proportional decrease in the current of the secondary and vice versa.
Munguti

@munguti-MnxkmE • Aug 23, 2009

silenthorde
Nope Dileep. Power is conserved from the primary to the secondary in a transformer. Just think for a while. Answer this questions.

Does the transformer have a seperate power source?

If your answer is no. Then where will the extra power come from? Therefore power is conserved from primary to secondary. The power at the primary is equal to the power at the secondary of a transformer.

So, if your i/p power to the primary is constant, stepping up the voltage (potential transformer) will lead to a proportional decrease in the current of the secondary and vice versa.
yeap laws of nature dictate that power cannot be created or destroyed it can only be converted from on form to another.