UCD 25 watts to 1200 watts using 2 mosfets

[stewin]

merry CHRISTmass to you all and a happy prosperous new year

 

[robson132]

Hi.
My class d amplifier
https://www.youtube.com/watch?v=eoJ3g-IH93Q&feature=youtu.be

 

[stewin]

hi all the modification of this amp to handle high voltage by the original authour

Amplificador HighEnd Clase D de 25W a 1250Wrms sólo con 2 MosFets N - Página 206

 

[aw1delft]

any relation to hpyex ucd modules?

Well, seems the amp finally poured into this forum.. I was asking myself when that would happen .. As it was said before, the schematics posted as the first ones on this forum are not the originals designed by me. They are derived versions of them, but in a bad way , as they are using slow mosfets that have unnecessarily high Rdson, making the amp run much hotter than required. And also, the amp is using as its power supply a truly high voltage, that is unsafe and a real hazard for people.
Please, dont build it as it is. Just follow the original diagram and use the enclosed PCB , that was optimized for it, that is posted on Foros de Electrónica - Comunidad Internacional de Electrónicos
As a sidenote, the amp is of the self oscillating class D type, based on the UCD technology and the associated patent, so, the amp itself is just for personal use. No commercial use is allowed for it
Regards, Eduardo

Dear Eduardo and others,
from the type naming I guess it should, but can you confirm hypex udc are related to the original?

 

[Dimonis]

Dear Eduardo and others,
from the type naming I guess it should, but can you confirm hypex udc are related to the original?

This type of feedback in selfoscilating amps was developed in 1960's . In vacum tube technology. Many used it , but Bruno Pytzeys made it his own patent [emoji33]

 

[stewin]

hi what about ejtagle discreet drive , he says it can drive up to 600vlts using the right fets and power supply. it is still ucd

 

[stewin]

Hi.
My class d amplifier
https://www.youtube.com/watch?v=eoJ3g-IH93Q&feature=youtu.be

hi robson irs900 works nicely but if you disconnect speaker or load while the amp is playing it fails

 

[Vahrezyvalm]

hi what about ejtagle discreet drive , he says it can drive up to 600vlts using the right fets and power supply. it is still ucd

Hi Stewin.its a nice schem.do you have the pcb design ? if you have,please sharing it here.I like to try it.

 

[stewin]

i have not made the board for the above , i was just wondering at its perfomance compared to the previous lm311 ucd design over this discreet design

but here are my previous layouts they are working perfecly . also some have oc protection.

i tend to like ucd because it is more stable than sigma in my experiences.

 

[Vahrezyvalm]

i have not made the board for the above , i was just wondering at its perfomance compared to the previous lm311 ucd design over this discreet design

but here are my previous layouts they are working perfecly . also some have oc protection.

i tend to like ucd because it is more stable than sigma in my experiences.

Hi Stewin,nice layout design.thanks for sharing.first items is smps schem.not class D amp.but its a good smps schem.

 

[CDJKuznec]

Hello my dear people.
I sorry that questions not on a subject.
I need help. I made 2 boards of AMPLIFICADOR DIGITAL DE 3200 WATS (JCOELHO).
And i made smps xp-5000.
1) Can i use this core for SMPS?
2) What is the name this core? And what is it: X2 67 on photo?
3) Can i use a copper tape 0.1х40?
4) for 220v AC, how many of turnes of the primary (24 or 48 turnes primary)?
Sorry for my bad English and machine translation. Help me please.

 

[Dimonis]

2) What is the name this core? And what is it: X2 67 on photo?

4) for 220v AC, how many of turnes of the primary (24 or 48 turnes primary)?

It is Epcos N67 material , the core is E65/32/27
For a halfbridge running at 50kHz you will need about 10 turns primary .

PS . А что трудно взять программу Старичка и рассчитать ?

http://www.diyaudio.com/forums/power-supplies/209221-smps-transformer-design-tool-ver-4000-a.html

http://forum.cxem.net/index.php?showtopic=70885

 

[CDJKuznec]

It is Epcos N67 material , the core is E65/32/27
For a halfbridge running at 50kHz you will need about 10 turns primary .

PS . А что трудно взять программу Старичка и рассчитать ?

http://www.diyaudio.com/forums/power-supplies/209221-smps-transformer-design-tool-ver-4000-a.html

????????? ??????? ??????????????? ? ????????? - ??????????????, ????????, ??????? - ????? ?? ????????????????

Thanks a lot for the answer.
Мой ПК вдруг помер, а на телефоне софтина не запустится)).

Why 50kHz? Oscillator - 130kHz, or primary will work 50kHz?

 

[stewin]

good news to all high power lovers

http://www.diyaudio.com/forums/atta...class-d-amp-lm566-lm393-2xirf530-apex-d2k.jpg

http://www.silabs.com/Support Documents/TechnicalDocs/Si824x.pdf

have fun

 

[CDJKuznec]

Sir Dimonis. Why 50kHz? Oscillator - 130kHz, or primary will work 50kHz?

 

[Vahrezyvalm]

hi what about ejtagle discreet drive , he says it can drive up to 600vlts using the right fets and power supply. it is still ucd

Hi.Stewin.Has someone tried it before?.I plan to try it may be more than 140dc ct.If it has no pcb design,I'll use matrix board pcb.btw,thanks for that schem.
Regard.

 

[stewin]

I think guys at forks de electronica have tried it. I am quite held up but will complete it . I had started on it

 

[Vahrezyvalm]

wow.thats good news from you.let's try together.btw.If you has started on it mean now you'll make the pcb layout.if so I think its better to wait your pcb design has completed.I hope its a single layer not dual.

 

[Vahrezyvalm]

Sorry, less typed.I mean let's try it together. hehe

 

[stewin]

Oops it is dual sided , I learnt the hard way dual sided boards are better than single sided also i strictly use smd . for the above reasons