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Old 18th July 2012, 10:00 PM   #2111
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yeah andrew,
try using higher value for the output inductor, my last test with ejtagle's circuit, i used about 180uH inductor, it gives more punchy sound...... more kick shall i say and one more thing some noise were gone.
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Old 18th July 2012, 10:31 PM   #2112
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andrew,

Click the image to open in full size.
Click the image to open in full size.

this is the one i used for ejtagle circuit, almost 180uH, 50turns #18 wire 27mm OD for the core, but it was factory wound core. a friend charge me a couple of bucks for the windings, he had a small company dealing with transformer.

thanks to mr. tagle for his circuit, i learn a lot of basics from this...
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Old 19th July 2012, 05:03 AM   #2113
abetir is offline abetir  Philippines
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Quote:
Originally Posted by thienchay View Post
Hi
This is my PCB file .
thienchay! you are very helpful... One more thing I see you are using 1N5819 (schottky barrier rectifiers) and 27ohms gate resistors (original was 10ohm). What type of MosFET are you using and at what rail voltage?...


Cheers!
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Old 19th July 2012, 12:17 PM   #2114
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Quote:
Originally Posted by abeteer View Post
thienchay! you are very helpful... One more thing I see you are using 1N5819 (schottky barrier rectifiers) and 27ohms gate resistors (original was 10ohm). What type of MosFET are you using and at what rail voltage?...


Cheers!
I'm used IRFP460 , schottky Diode is better , and R gate i using 22 ohm
Sorry All , diode boostrap is FR207 or Diode has Vrrm >= Vcc .
And this is my last check .
Attached Images
File Type: jpg Untitled.jpg (166.0 KB, 1332 views)
Attached Files
File Type: pdf IRS-900D _ Overlay.pdf (104.3 KB, 548 views)
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Old 19th July 2012, 03:07 PM   #2115
exflaco is offline exflaco  Armenia
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Gerry could share pcb bridge you show picture simil triell ?
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Old 20th July 2012, 08:35 AM   #2116
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Hello maybe who heve
detex-audio Class D Amplifier IRS-3000D scheme?
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Old 22nd July 2012, 11:51 PM   #2117
exflaco is offline exflaco  Armenia
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Algel the same irs900 plus lm311 555 protction look schematics irs900 anterios postdetex2.PNG

detex1.PNG

detex3000.jpg

CHE-900D.jpg
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Old 23rd July 2012, 05:04 AM   #2118
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hi,what is the values of R-OSC/RFB/OCP ?
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Old 23rd July 2012, 05:07 AM   #2119
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1k/100k/?????
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Knowing GOD is not being good,Knowing GOD is just knowing him as my friend
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Old 23rd July 2012, 12:52 PM   #2120
exflaco is offline exflaco  Armenia
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Irvi Tien Ionutx Alfel

RSS/2W 70v 4.7k/2w 90v 6.8k/2w
RFB R 68k-220k (100k)
R OSC 1k

ic gate drive ir2110
ic inverter cd4049
ic compara input TL071CP
ic protection ic 8 LM311 2 ic NE555N ic
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