Ultra Simple Class D

[andrewlebon]

Hi Diyers
Greetings. simple 200W amp works first time on simple parts only I don't have output inductor with this inductor amp is working Credit goes to Norazmi for helping me to make this amp possible

Warm Regards
Andrew Lebon

 

[vedmitraa]

well done Andrew, you are proud of Agra.with love Vedmitraa

 

[nrg2009]

looks very simple and simple=good!
What chip did you use? what voltages are you using?

great job!

 

[benb]

That looked a little TOO amazing until I saw the two screws at the top holding down what appear to be TO-220 semiconductors on a heat sink underneath the board. I see the three leads of each coming up through the board. With a single-sided board it's gotta be simple!

 

[nrg2009]

How about a schematic?

 

[andrewlebon]

ULTRA SIMPLE CLASS D

Hi
greetings i will post pcb and component layout for this simple amp
components ic TLO74 OUTPUT transistors IRF 540 IRF 9540
2N5401 2N5551 BD139 BD140 SUPPLYtransformeri used is 20 0 20 AC tested till
33 0 33 AC transformer all i can say it comes on first time output transistors
are very cool on 4ohm load amazing bass and clarity pcb size is 8cm by 5cm
for anyone making their first d class amp this amp is a good starting point 200
watts
warm regards
andrew lebon

 

[andrewlebon]

pdf doucment size

hi
greetings how to post schematic and pcb the pdf document is 300kb and forum allows only 190kb any wayto get schematic on forum
warm regards
andrew lebon

 

[andrewlebon]

trying to upload

trying to upload file pdf file size 299 kb

 

[andrewlebon]

diysmps

 

[nrg2009]

Nice, very impressive. My hat is off to you.

 

[benb]

diysmps

You're apparently linking to an attachment on another forum that needs registration to view attachments. Unfortunately, that forum strongly discourages such registrations:

-If you came here to JUST view some attachments or you are after some commercial ideas, please leave now.

Page Title

 

[Richard Ellis]

Nice little Class 'D'...............Glad it works as planned....Do you have any specs on it...performance parameters perhaps.
Just who is this other site & why are they so adamant toward not sharing information? The greatness of internet forums, regardless of the field of interest , is a free exchange of information..............an open book if you will. Commercial interests are few & far between as the likely-hood of profit is extremely thin within this industry.

______________________________________________________Rick..........

 

[herosungod]

what a good class

 

[irvynejay]

Class D pwm Amp

here is my diy of this amp
running at 50vdc idle offset 8.5mv inductor 47uh at 100 hz =28.27vac=206 watts 4 ohms load

 

[andrewlebon]

NICE WORK

Hi Irvynejay
greetings NICE CONSTRUCTION easiest Dclass amp with good
performance something for firstimers in dclass TO try out
warm regards
andrew lebon

 

[theAnonymous1]

What is the Fsw?

 

[luka]

for my taste, industor is too big, value... more THD

 

[rezamir]

hi irvynejay
i love this pretty design,
i wont to tst it. would you share its schematic.

 

[norazmi]

Irvy, lower you inductor to 30uh then 680nf filter caps. for lower impedance 22uh and 1uf filter caps, the mosfet stable enough and only warming at full power, it will not overheat, do not go more than +/- 50vdc.

 

[norazmi]

with T106-2 iron powder core u need to wind about 47 laps and u will have approx 30uh, coil length approx 1.783 yard make it 1.8 yrd.