powetr transformer

[marvz]

power transformer

hello there

i want to build a power transformer with a known value of:

primary=220 volts
secondary= 40v-0-40v center tap at 20 ampere
core (CL) 1.5 inch

what is the formula for calculating the ff.?

power=
turns per volt=
size of wire to be use.

 

[ericgibbs]

hello there

i want to build a power transformer with a known value of:

primary=220 volts
secondary= 40v-0-40v center tap at 20 ampere
core (CL) 1.5 inch

what is the formula for calculating the ff.?

power=
turns per volt=
size of wire to be use.

Hi,
Look at this current Forum thread, lots of ideas, formula's etc.

https://www.electro-tech-online.com/threads/transformer-rewinding.86079/?highlight=MrAl