Author Topic: Simple PWM Class d Amp 200w (Read 7863 times)

flyback · « **on:** March 12, 2012, 01:17:35 PM »

Baka my gusto mag try already tested and working

Philippine Electronics Forum · « **on:** March 12, 2012, 01:17:35 PM »

jiggins20 · « **Reply #1 on:** March 12, 2012, 01:29:51 PM »

pwede post ng schematic sis?

Philippine Electronics Forum · « **Reply #1 on:** March 12, 2012, 01:29:51 PM »

flyback · « **Reply #2 on:** March 12, 2012, 01:34:47 PM »

sis up ko lang
pls be aware that schematic is no inductor connected\

link ng pcb

http://www.sendspace.com/file/kc9ke8

Philippine Electronics Forum · « **Reply #2 on:** March 12, 2012, 01:34:47 PM »

Disabled · « **Reply #3 on:** March 12, 2012, 01:37:55 PM »

~~available po ba locally ung IC?~~
TL074 pala ginamit

Philippine Electronics Forum · « **Reply #3 on:** March 12, 2012, 01:37:55 PM »

flyback · « **Reply #4 on:** March 12, 2012, 01:42:49 PM »

yes TLO74 lang yan

Philippine Electronics Forum · « **Reply #4 on:** March 12, 2012, 01:42:49 PM »

flyback · « **Reply #5 on:** March 12, 2012, 01:46:24 PM »

hehehe uu sis kaya nga simple yung masilan lang dyan matching ng inductor ,,,easy to start class d

!!warning max voltage 50vdc only

jiggins20 · « **Reply #6 on:** March 12, 2012, 01:50:56 PM »

di ko madownload sis?

flyback · « **Reply #7 on:** March 12, 2012, 01:52:43 PM »

click mo yung hehehe

Click here to start download from sendspace

may ibang link kasi kasali dyaan

EE ferrite core with gap with bobbin will work kung meron kang lcr meter mas mabuti

TinTopHack · « **Reply #8 on:** March 12, 2012, 01:54:24 PM »

Quote from: flyback on March 12, 2012, 01:34:47 PM

sis up ko lang
pls be aware that schematic is no inductor connected\

Interesting... seems the 3rd op-amp stage rightwards up to the output form a relaxation oscillator. The audio signal from the 1st and 2nd op-amp stage modulates the pulses generated. I think you need both an inductor and cap at the output to filter the PWM pulses...

flyback · « **Reply #9 on:** March 12, 2012, 01:57:13 PM »

yes po sis thats why i posted no indutor at filter but sa pcb may terminal na po yung indutor

inductor 22uh filter is 1uf 250volts

note yung bd139's/140's lagyan lang ng maliit na heatsink normal na mag heat yan

jiggins20 · « **Reply #10 on:** March 12, 2012, 02:03:51 PM »

di ko tlga madownload sis...hehehe

flyback · « **Reply #11 on:** March 12, 2012, 02:05:00 PM »

email mo sis?

ito yung mounting ng irf540 .irf9540 ko

jiggins20 · « **Reply #12 on:** March 12, 2012, 09:15:13 PM »

jigsatrow@yahoo.com.......thanks sis...

flyback · « **Reply #13 on:** March 12, 2012, 10:32:20 PM »

file sent sis

mund24 · « **Reply #14 on:** March 12, 2012, 11:08:08 PM »

ganda sir +1

pm nalang kita sir my email add, send na din ng schematic, thanks sir

RaffT · « **Reply #15 on:** March 12, 2012, 11:14:37 PM »

parang nakita ko na ito? sa SONY ba ito?

flyback · « **Reply #16 on:** March 13, 2012, 10:57:54 AM »

D ko po alam kung Sony po yan but this was develop by Jtagle from Spanish forum

pm answered and file sent thru email

Ikasamoko · « **Reply #17 on:** March 13, 2012, 07:38:11 PM »

Mga magkano magastos less power supply? tamang-tama sa LCR ko...

flyback · « **Reply #18 on:** March 13, 2012, 08:00:22 PM »

d aabot ng 1k yata yung 2 channel nyan d kasi ako nag total sa mga diy ko
yung mga EE core 1uf 250v caps makukuha mo sa pc psu

try nyu tingnan sa new port price
ex:
TL074CN-O 14.00
IRF540N 50.00
IRF9540 50.00
BD139 10.00
BD140 10.00

@ sis Kasamiko pls share you working lcr meter pls accurate po ba sya

Disabled · « **Reply #19 on:** March 13, 2012, 08:04:02 PM »

waw.

magawan nga ng PCB toh.

Philippine Electronics Forum · « **Reply #19 on:** March 13, 2012, 08:04:02 PM »

Author Topic: Simple PWM Class d Amp 200w (Read 7863 times)

Philippine Electronics Forum

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Philippine Electronics Forum

Philippine Electronics Forum

Philippine Electronics Forum

Philippine Electronics Forum