Uni SMPS 300W

[panos123]

it.s very good smps...
i pushed it hard to 220 watt(it's 200 watt) and it had only 0.7 volts voltage drop...
at a half brige pc smps(mje13009) can i conect another transformer in parallel in order to take the voltage i want?

 

[Acca]

You can try.Best self osc. SMPS for me is version with fet's,I use it almost anywhere....

 

[posinfo]

Thi acca,

I use original e16 and original ei33, i want to know how many turns and what wire i can use, for me try rewind the trafo e16. Understand?

 

[sima8520]

Hello.
This is my SMPS on IR2153S

 

[Acca]

Oh very nice,but you didn't need high value caps at output.Use 10u for 1A for output,and 1u per 1W for input.If you use high value output caps,Fet's will blow up because of high current at start.

 

[sima8520]

I have 2x1000uF at the output on each shoulder

 

[posinfo]

Hi, is there any one in this forum that know how to rewind the t2 using the e16 or e19?
i need to know the the wire and how many turns for use in the uni 300w,
if anyone know how do do it explaing please, if possible send a picture with explanation.
i'm waiting.

 

[sima8520]

"Feedback transformer is original EE16/19,not rewounded"

 

[posinfo]

"feedback transformer is original ee16/19,not rewounded"

but for me the oringinal don't work any way, so i want to rewind the e16, understand?
If possible please let me

 

[koming]

this my first smps based on acca uni self osc.


drive class d amp 2x200w.

 

[vorezky04]

Thank you acca about your sharing.
I will make it.
Please wait my posting UNI smps and after that SMPS3K.

:angel::angel:

 

[Acca]

I will soon post better smps here...

 

[vorezky04]

Yes, but i need some modification at output voltage.

 

[posinfo]

Hi acca, can you show how to rewould the t2 e16? The one i try to use don't work, if you can help, thanks.

 

[Bolasha]

Hey guys, I made it work! I just removed the capacitor at the entrance. (100n).

But it has no power! I put a 50 ohm resistance on the 34v secondary and got only 14v
It's like only some miliampers.

What can the problem be?

Picture:

 

[Acca]

That topology must use fullwave rectifiers, or it wont had power.

 

[Acca]

You made rectifiers full wrong

 

[Bolasha]

Thank you! Now I got 3A.
IT's not even 100w but it's something hehe.

I loved the simplicity of your project Acca! Thanks for helping me.

 

[Bolasha]

Do you have layout PCB in pdf for the one in post #44?

 

[Bolasha]

I need help. I can't get more than 80w from it. I tried to double the wiring in the secondary but it doesn't change anything.
I'm using 13.8v and when I apply some load, the voltage drops a lot!