Switch Mode transformer winding Formulas Required!

Hi,
I need primary and secondary winding formulas for the following transformers,
(1) ETD 29,34,44,49.
(2)EE small/big.
(3)RM 10,12_small big.
(4)EC40.
(5)PQ3535.

Your question is too generic.
Check if this helps :




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andre_teprom said:

Your question is too generic.
Check if this helps :




+++

Click to expand...

winding formulas are required not pwr supp topologies.
like for etd49

npri={(vin min/2)x10^8}/ 4 x f x b x ac
and
nsec={1.1(vout+vfd)xnpri}/vin min x dmax

similarly formulas or techniques are required to find primary/sec winding for all mentioned ones . :roll:

There is no single formula. The turns number will change based on topology. Eg. the transformer design for a flyback converter will be dictated by the primary inductance. This along with other factors such as air gap will determine the number of turns.

The turns ratio and turn numbers will vary for forward, push pull, half bridge, full bridge and other topologies.

Hope this helps.
Tahmid.

Tahmid said:

There is no single formula. The turns number will change based on topology. Eg. the transformer design for a flyback converter will be dictated by the primary inductance. This along with other factors such as air gap will determine the number of turns.

The turns ratio and turn numbers will vary for forward, push pull, half bridge, full bridge and other topologies.

Hope this helps.
Tahmid.

Click to expand...

Tahmid yaar thats what i am asking about tell me the source any web site books etc .....need methods for calculation....

The link posted above pretty much covers everything, categorized by topology.

But if you want a book, I would recommend Power Supply Cookbook - Marty Brown or Switching Power Supply Design - Abraham I Pressmen.

You can get a complete list of some such useful books here:
List of some useful books for SMPS

Hope this helps.
Tahmid.

tahmid said:

the link posted above pretty much covers everything, categorized by topology.

But if you want a book, i would recommend power supply cookbook - marty brown or switching power supply design - abraham i pressmen.

You can get a complete list of some such useful books here:
list of some useful books for smps

hope this helps.
Tahmid.

Click to expand...

thanks man

Power Supply Cookbook - Marty Brown

Practical Switching Power Supply Design - Marty Brown

Power Sources and Supplies - Marty Brown editor

Switching Power Supply Design - Abraham I Pressmen

High Frequency Switching Power Supplies-Theory and Design – George Chryssis

Demystifying Switching Power Supplies - Raymond A. Mack,Jr

Practical Design of Power Supplies - Ron Lenk

Regulated Power Supplies - Irving M. Gottleb

Switch mode Power Converters Design & Analysis - Keng C Wu

Switch mode Power Supply Handbook - Keith H. Billings

Switching Power Supplies A to Z - Sanjaya Maniktala

FREE DOWNLOAD LINKS PLEASE

"Power Supply Cookbook - Marty Brown".... I found this book at torrent.

https://kat.ph/power-supply-cookbook-cuppy-t3146137.html

May be others can also be found...

for transformer design, theory design is only starting step, it mains if the transformer can be made, so we need adjust and optmize preliminary design when wemake samples by ourself, practice is more importance,e.g how to reduce leakage inductance and capacitance, how to ensure creepage and clearance distance, and how adjust winding position and reduce or rise output voltage, how to pass THD and very high surge voltage,how reduce power loss, how to reduce noise,how to cost down, and so on, so it is not simply work.