Transformer

Hi can you upload all equations so we can see the maths behind what your doing

Thanks
Mark Harrington

Yes, for instance, where did you get 0.122 from?

The formula for turns ratio vs impedance is:

N1 squared over N2 squared = Z1 over Z2

Oh, I see where you got .122 ... if I make N2 the primary, I get 0.125 which is close to your .122. What you are asking, though, is, what is the value of N1. N1 will be determined by factors that you have yet to divulge, such as the peak current involved and the type of core material. But, I may have to bow out of this discussion, because I'm more of a digital/MCU guy.

The short answer is, N1 is arbitrary and will be determined by factors involved in the application and make-up of this transformer.

Yes the correct ratio is 8:1, where the 8 turns is on the 640 Ohm side.

or 16 turns if the primary has 2, or 24 if the primary has 3turns, etc.

Hello, Thanks for your response, can i ask what steps you took to get this answer?

Hi, i have been following instructions from my own notes to do this:

i only had a similar question and i basically just changed the numbers, however the equations i have and answer for my example confused me.

So any help is welcome in me getting this correct, step by step. and understanding this better.

Vfh