Ultra Simple Class D

[pavlo99]

hi all i made the few modifications .now it is better and can run with 2n5401 and 2n5551 as drivers.

Stewin.. can I use TL084 instead TL074 ???

 

[stewin]

Stewin.. can I use TL084 instead TL074 ???

hi pav you can use tl084 it works well too

just wanted to know how can you increase the high frequency response of this amp??

 

[pavlo99]

noise

hi all i made the few modifications .now it is better and can run with 2n5401 and 2n5551 as drivers.

I make this modificatios in my amp, I use single sided board with all GND conected in your first schematic, and when i inject a 1khz sine wave, the output with a resistive load of 4 Ohms show this..

 

[pavlo99]

Help!!!

- I try make this amplifier, but got very noise, i change CAP C9 = 1mf x 250v in output filter and get a little reduction of noise, i use BC337 and BC327 instead 2n5551 and 2n5401 and use IRF9630 and IRF640 pair in output.
Please,,, any ideas?

 

[stewin]

- I try make this amplifier, but got very noise, i change CAP C9 = 1mf x 250v in output filter and get a little reduction of noise, i use BC337 and BC327 instead 2n5551 and 2n5401 and use IRF9630 and IRF640 pair in output.
Please,,, any ideas?

hi pav you are using the wrong schematics. please change the schematics to the below components . and to avoid disappointments please use irf540n and irf9540n

below the correct schematic

 

[pavlo99]

hi pav you are using the wrong schematics. please change the schematics to the below components . and to avoid disappointments please use irf540n and irf9540n

below the correct schematic

Very thanks my friend.. now really work fine.. 0,2% THD at 100WRMS

 

[kug]

Thank you very much

 

[Hadighorbani]

hi pav you are using the wrong schematics. please change the schematics to the below components . and to avoid disappointments please use irf540n and irf9540n

below the correct schematic

Hi Stewin
do you have short and DC protection for this schematic?

 

[Deleted member 148505]

Schematic with overcurrent protection circuit.
Tested up to +/- 60V Rails.

 

[masood251]

Pls share pcb pdf
Thanks

 

[sweetperfume]

I habe built this amp several time but only issue i m facing is that bd139/140 heats up very fastly and get very hot as amp is pushed to limits.
Has anyone faced such issue and if yes then what is the remedy. I m using the same design as in the first post. No changes. And i guess everyone uses the same.
Thank you in advance if anyone can help������

 

[DAMANHURI]

And this is complete design of UCD but consider DIYers who have supply material problem. It should be fine with it, but not the best. Tested.

what do you think about the character of his voice? I'm interested in trying it out, mas

 

[Deleted member 148505]

Pls share pcb pdf
Thanks

Attached gerber files and schematic

 

[sweetperfume]

I habe built this amp several time but only issue i m facing is that bd139/140 heats up very fastly and get very hot as amp is pushed to limits.
Has anyone faced such issue and if yes then what is the remedy. I m using the same design as in the first post. No changes. And i guess everyone uses the same.
Thank you in advance if anyone can help������

No one??? Really??

 

[doityourselfamp]

hi
any test more for this amp ?
mr stewin ???

 

[stewin]

hi all . below are links to my 200watts smd version all i have tested and are working fine.

have fun all . and to GOD be all the glory

diysmps

diysmps

Ultra Simple Class D - Page 48 - diyAudio

this was my last work on this amazing amp . revisiting it soon

 

[stewin]

any one with photos of their projects ,they post !

 

[stewin]

also here are the files for my successful class d 200w amps
i use cadsoft eagle layout for all my layout.

have fun all 😀😀

 

[stewin]

hi all , it is quiet here. please guys post pictures of your projects.

i wanted to ask , can lm324 be used in this amp instead of tl074 ?

 

[stewin]

hi all , it is quiet here. please guys post pictures of your projects.

i wanted to ask , can lm324 be used in this amp instead of tl074 ?

😕😕