UCD 25 watts to 1200 watts using 2 mosfets

[ionutzxpo]

Hi Tekko,where did you get those aluminium blocks?

 

[Tekko]

The heatsinks ? I cut up a heatsink from a ATX PSU.

 

[ionutzxpo]

yup the heatsink

 

[stewin]

hi all good news for recycling ferrite cores

>>>>> diysmps <<<<<<<<

 

[ravpreet420]

irs 1500 not working perfect....when volume low then green led off state ,when green led glowing with volume(sound) level.when low volume then amp does not occilate.when volume high level(after 20%) then green led glow with full light & sound is clear .at low volume amp does not occilate....
all pcb connection, track is clear & right

 

[kirubakaran]

irs 1500 not working perfect....when volume low then green led off state ,when green led glowing with volume(sound) level.when low volume then amp does not occilate.when volume high level(after 20%) then green led glow with full light & sound is clear .at low volume amp does not occilate....
all pcb connection, track is clear & right

hi,
greeting,
ravpreet, irs1500 is delta sigma class d so this amp want input signal to start osilation, once start osilation amp working perfect.

 

[Deleted member 148505]

IRAUDAMP1 has an extra circuit to start the oscillation even without input signal. You might want it to include in your IRS1500 layout.

 

[SERGIODS]

Hello!

I lost some time and among many messages ... What happened to the onset UCD design theme?

Still working with the design and it has never failed one. I see that there have been other diagrams and do not work quite right.

It is something to adjust here and there ... The design is good and can be very reliable and respectable power.

Greetings!

Hello Tacato have the complete PCB, already armed beam.
PS: It looks great.

 

[ravpreet420]

hi,
greeting,
ravpreet, irs1500 is delta sigma class d so this amp want input signal to start osilation, once start osilation amp working perfect.

i know sir but main problem at low volume ,
everytime increase volume then amp start normal

 

[Deleted member 148505]

how many millivolts of ac input signal is required to start the oscillation?

 

[Tekko]

If it doesent selfstart it means the poles and zeros are not properly placed.

 

[andrewlebon]

SONY D CLASS

Hello
greetings anyone tried this schematic
warm regards
andrew lebon

 

[wattaniya]

pls anybody tell me is this core suitable for class d amps,
outer dm-2 inch
inner dm-1.25 inch

 

[stewin]

Hello
greetings anyone tried this schematic
warm regards
andrew lebon

try the forum below in diy audio
GZPA Class D 4000W with IRFP264

 

[redmx]

Hello Tacato have the complete PCB, already armed beam.
PS: It looks great.

hi I'm no longer with the original project ucd tacatomon this amplier mentioned is very unstable and much emi also has lots of background noise. I'm dealing with delta sigma is excellent and does background noise , greetings to the forum

 

[aman khalsa]

ready in stock

ready in stock IRFB4227 and IRFP90N20D ... any one interested to buy ... then PM me.. thank u

 

[CDJKuznec]

Hi exflaco. I from Russia. Excuse me for my bad English. Here http://www.diyaudio.com/forums/class-d/166214-ucd-25-watts-1200-watts-using-2-mosfets-204.html
in the 2034th post you told "Irvinejay tri-l have 2 verssion 110 and 220v direct ,only rectifier and capacitor no power suply".
Give me please a payment with face (PCB, lay) values on 220 volts. I will need use it on 220 volts of supply.
In advance I thank you!

 

[exflaco]

CDJKuznec wait to monday y have information in other pc no problem y share ,you neet a aislating signal transformer and its only for powered boxs its dangerous to use in power amp standard rack measure, the output to 220v direct ,no smps could kill you

 

[Dimonis]

I from Russia.

Питание напрямую от сети 220Вольт - ОПАСНО ! и фактически неприменимо!

If you don't know english enough , ask in russian - http://forum.cxem.net/index.php?showforum=122

 

[CDJKuznec]

I know that the direct use of 220v is very dangerous, and I will use a transformer for galvanic isolation. By lowering the voltage to + -95, obtained large size transformer. So I want to use the 220 ​​for the card, but do not know which components of change for the strain.