Ultra Simple Class D

andrewlebon · 31st January 2012, 08:28 AM

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 · 31st January 2012, 05:54 PM

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

nrg2009 · 31st January 2012, 06:16 PM

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

great job!

benb · 31st January 2012, 06:26 PM

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 · 31st January 2012, 06:39 PM

How about a schematic?

andrewlebon · 31st January 2012, 11:55 PM

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 · 1st February 2012, 12:02 AM

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 · 1st February 2012, 01:44 AM

trying to upload file pdf file size 299 kb

andrewlebon · 1st February 2012, 01:51 AM

diysmps

nrg2009 · 1st February 2012, 02:02 AM

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

31st January 2012, 11:55 PM	#6
andrewlebon diyAudio Member Join Date: Feb 2008	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

1st February 2012, 12:02 AM	#7
andrewlebon diyAudio Member Join Date: Feb 2008	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

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31st January 2012, 05:54 PM	#2
vedmitraa diyAudio Member Join Date: Feb 2010 Location: agra uttarpradesh india	well done Andrew, you are proud of Agra.with love Vedmitraa

31st January 2012, 06:16 PM	#3
nrg2009 diyAudio Member Join Date: Apr 2009 Location: Detroit, born and raised in the netherlands.	looks very simple and simple=good! What chip did you use? what voltages are you using? great job!

31st January 2012, 06:26 PM	#4
benb diyAudio Member Join Date: Apr 2010	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!

31st January 2012, 06:39 PM	#5
nrg2009 diyAudio Member Join Date: Apr 2009 Location: Detroit, born and raised in the netherlands.	How about a schematic?

1st February 2012, 01:51 AM	#9
andrewlebon diyAudio Member Join Date: Feb 2008	diysmps

1st February 2012, 02:02 AM	#10
nrg2009 diyAudio Member Join Date: Apr 2009 Location: Detroit, born and raised in the netherlands.	Nice, very impressive. My hat is off to you.