my smps project help

[Ipanema]

Hi,

May I know how to you get to wind the ETD59 transformer to your need? My local shop only sell ETD59 core without the winding.

Thanks.

 

[inductionMotor]

by the way, there is no information about line filter. what is desired value of inductance? and i dont understand which component symbol "275" connected after line filter. [btw it is called common mode noise filter, isnt it?]

 

[zerohead_ak47]

by the way, there is no information about line filter. what is desired value of inductance? and i dont understand which component symbol "275" connected after line filter. [btw it is called common mode noise filter, isnt it?]

inglizcem pek iyi deðil ne dediðini tam oalrak anlayamýyorum zerohead_ak47Qhotmail.com ekle beni görüþelim

 

[inductionMotor]

ok zerohead_ak47. i added to my contact list. see you

msn e seni ekledim orada tartışabiliriz.

 

[Valenca]

Hi zerohead_ak47, this circuit SMPS is working ?

How i connect in 110VAC ?

Thank's !

 

[Adnancoskun]

hi valance
you can connect in 110 volt, but you must use simple transformer 110 volt to 12 volt instead of 220 to 12 volt and you must do main transformer 15 turns for primer and 2x5 turns for secondary is it ok?

 

[Valenca]

Adnancoskun,

Thank you for answer, but you not understudy my question, I want feed the circuit in SMPS circuit in 110V and not in 220V, OK ?

Can you help me ?

 

[areza]

of course u can, every ancient at power supply do that (120/220 v) google for at power supply schematics,

 

[Adnancoskun]

hi Valenca

ý understod you want feed this circuit by 110 Volt, is not it?
ok
1- did you see? 0-15 volt 8 watt transformer? it is 220 to 15 volt , it must be 110 volt to 15 volt transformer
2- did you see ETD 59 SIEMENS primer 25 turns 1.34 mm, seconder is 2x9 turns 1,68mm ------it must be 13 turns for primer and 2x5 turns for secondary

 

[chriscam]

while looking at half.pdf, you might want to upgrade your
4700uf caps to 100V to avoid fireworks

 

[Valenca]

Adnancoskun,

OK, now i understod ! Thank´s so !

More one quention, look this picture, that´s right ? or not ?

 

[ashok]

Valenca :
I think you must have misunderstood the message.

The mains input remains IDENTICAL . No skipping over as your diagram indicates.

You "missed" the fact that there is a small "transformer" to power the two IC's from the mains . THAT transformer must now be rated 110 volts primary /15 volts secondary . It is powered from the mains.
Also the HF power transformer windings are different.

Those are the only changes I think.

Hope I got this right .

 

[Valenca]

ashok,

You right, I modificate the two IC's transformer for 110VAC and the HF power transformer windings too, now may confuson is "S1 Key" (110/220V), look this picture and speek if reality necessary ?

Thank's so !!!

 

[fernando_g]

About the S1 switch....
That is how computer "silver box" power supplies perform the 115/230 volt changeover.

If you plan on using a single voltage, just delete it. and put a jumper wire instead.

 

[chriscam]

updated schema

Merhaba,

What calculation did you use to find the number of primary turns ? The one I'm using link returns only 10.5 turns. (f=50k,Ae 3.68, B=2Kg, Vin = 155)

edit : I already found the answer, it's pushpull so the Uin should be doubled.

Thanks - CC

 

[Valenca]

Fernando, thank´s for help !

Are you brazilian ?

Voce é brasileiro ?

 

[fernando_g]

Fernando, thank´s for help !

Are you brazilian ?

Voce é brasileiro ?

No, Mexico-Americano

 

[Valenca]

OK Srs, I need the power suply circuit for may Mosfet Power Amplifier, he work in 90v + 90v - and 75v + 75v - x 10A per channel. any body have the circuit SMPS for it ?

Thanks !

 

[adi109cj]

Valenca,where you find that smps schematic ?
with igbt's, full-bridge.

 

[Valenca]

adi109cj, I find some place in this topic:

http://www.diyaudio.com/forums/showthread.php?threadid=69111