What kind of this transformers

[neduet]

Hello friends

What is the use of 1:1 transformer and are they using currently in hi-tech circuits.

thanks

 

[harroxelas]

These transformers are called isolation transformers because they simply separate circuits. One of the main use of these kind of transformers are for galvanic isolation. You simply segragate two circuits and couple them by the magnetic flux in the transformer's core.

I don't know if they are used in hi-tech circuits (what is hi-tech anyway? this term is very vague) but they are used in a lot of applications.

 

[berkeman]

Hello friends

What is the use of 1:1 transformer and are they using currently in hi-tech circuits.

thanks

Sounds like a schoolwork question. What do you think the answer is?

 

[neduet]

schoolwork question

no, not schoolwork question, actually its confused me,that why we have to couple circuits
with the help of Transformer,

 

[berkeman]

schoolwork question

no, not schoolwork question, actually its confused me,that why we have to couple circuits
with the help of Transformer,

What kind of circuits do you need to couple with the help of a 1:1 transformer? What frequency ranges?

 

[Studiot]

I don't follow the original question, but pulse transformers are often 1:1.

 

[stewartcs]

schoolwork question

no, not schoolwork question, actually its confused me,that why we have to couple circuits
with the help of Transformer,

Well the most important reason is to electrically decouple the two circuits. Grounds cannot be passed through transformers so one with a 1:1 ratio will just isolate the two circuits. Take for example an electrical test workbench, isolation transformers are used to prevent inadvertent grounding for safety reasons while testing electrical devices.

CS

 

[neduet]

thanks a lot

 

[aks786]

another application is to use 1:1 transformer (three phase) in Star-Delta or Delta-Star configuration. Delta-Star for eliminating zero sequence currents, like in distribution having single phase unbalanced loads. Star-Delta for deriving zero sequence voltages, specially in protection relay circuits.

 

[sophiecentaur]

A 1:1 transformer will eliminate common-mode interference, such as hum etc.. They are (or were) commonly used in audio circuits for that reason, on either end of a long audio line which could have unwanted currents induced in it. The volts on the downstream secondary will have the same signal as the volts on the primary at the sending end - as long as the cable is a twisted pair with no effective area for the induction of volts from magnetic fields.