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nijjar
02-10-2013, 03:25 PM
Hello this is Nijjar. I am new to this forum and a beginner with amps, This is my first post. I was working on some SMPS with TL494 and amp based on TDA7294. Could somebody plz advice how I could build my own transformer for SMPS instead of using one from ATX supply. I have attached the schematic of PSU and Amp. Some specification of transformer are given in schematic, Kindly try to give detailed explanation on how to build it with wire guage, core size etc.

pritam kundu
09-01-2015, 10:50 AM
Use a computer smps atx transformer..

Rookiex
09-02-2015, 03:41 PM
Use ultrafast diodes for dc rectification and lessen secondary turns

Rookiex
09-02-2015, 03:43 PM
http://eletronicasilveira.forumeiros.com/t5574-modulo-completo-stereo-8080w-para-painel-mp3-player

cmeletronica
03-07-2016, 01:41 AM
GERBER E PDF (https://mega.nz/#!zQBzGb7R!NL1P7ywprex3AI4kW6DdYhuC5ivmt2-YZvYq3EHG_90)


http://oi60.tinypic.com/288nl2u.jpg

http://oi60.tinypic.com/2lm4aoz.jpg

http://oi61.tinypic.com/154g10l.jpg

http://oi60.tinypic.com/am7ifn.jpg

cmeletronica
03-07-2016, 01:42 AM
http://oi57.tinypic.com/2lm2yz9.jpg

http://oi60.tinypic.com/t9e2e1.jpg

cmeletronica
03-07-2016, 01:43 AM
Project by renato bazzo , pcb by cmeletronica

cmeletronica
03-07-2016, 01:45 AM
https://www.youtube.com/watch?feature=player_embedded&v=3MQYX0p9yls

cmeletronica
03-07-2016, 01:46 AM
https://www.youtube.com/watch?feature=player_embedded&v=3MQYX0p9yls

Voitano
03-07-2016, 05:00 PM
Hi, im using this page http://schmidt-walter-schaltnetzteile.de/smps_e/smps_e.html

cmeletronica
03-08-2016, 12:55 AM
sorry
I did not understand what he meant

Voitano
03-08-2016, 02:49 PM
For calculations use Full-Bridge Push-Pull converter topology , primary winding will be then doubled

angellina
06-12-2016, 11:44 PM
Wow.......rally so cool............. (http://www.caraudiogiants.com/shop-by-category/amplifiers/soundstream-p4-800.html)!!!!!!!!!!!!!!!!!

leaseba84
12-04-2016, 04:50 PM
Would you have winding data for ei33?