- #1

- 46

- 0

I would like to know how to work out the turn ratio on a transformer from having just the input and output voltages.

Last edited:

- Thread starter speedy46
- Start date

- #1

- 46

- 0

Last edited:

- #2

- 1,041

- 4

N = turns ratio

Vp = primary Voltage (rms)

Vs = secondary Voltage (rms)

In real transformers, the turns ratio will be slightly higher (typically about 2%) than what is calculated by this formula. One way to improve the accuracy of the calculation is to use a primary Voltage that is only about 10% of the rated Voltage.

- #3

- 46

- 0

For example = 244 / 9.88 = 24.6

So the turn ratio is 24 - 6

So the turn ratio is 24 - 6

Last edited:

- #4

- 53

- 0

- #5

- 2,226

- 9

what? isn't it 246 to 10? or 24.6 to 1?For example = 244 / 9.88 = 24.6

So the turn ratio is 24 - 6

- #6

stewartcs

Science Advisor

- 2,177

- 3

There are quite a few more types of transformers than just step-up and step-down (e.g. autotransformers, buck-boost, isolation).

CS

- #7

- 46

- 0

How do you calculate the out put voltage of a transformer when you only know the input voltage

- #8

- 159

- 0

its based on the ratio as stated

How do you calculate the out put voltage of a transformer when you only know the input voltage

- #9

- 46

- 0

Is there a formula for working this out please

- #10

- #11

- 1,041

- 4

- #12

- 46

- 0

thank you

- Replies
- 5

- Views
- 2K

- Replies
- 6

- Views
- 7K

- Replies
- 5

- Views
- 992

- Last Post

- Replies
- 5

- Views
- 3K

- Replies
- 8

- Views
- 9K

- Replies
- 4

- Views
- 519

- Replies
- 1

- Views
- 3K

- Last Post

- Replies
- 1

- Views
- 6K

- Replies
- 2

- Views
- 2K

- Replies
- 2

- Views
- 4K