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Old 15th August 2012, 12:40 AM   #2261
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IR2110 will HEAT on 2 pairs of mosfets on detex design
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Old 15th August 2012, 01:51 AM   #2262
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Quote:
Originally Posted by irvynejay View Post
i don't have schematic i only made the amp without it and its working great
i only use detex file to make the pcb
does anyone have the correct schematic for this IRS900d?
Is this PCB correct or cointaining errors?
http://www.diyaudio.com/forums/attac...449ca921e4.jpg
I want to use IRFP250N for this AMP as it's shown in the IRS500 layout.
I wonder if irvynejay and anyone has made this AMP help me if there is some useful points.
I want to drive the Amp with -+60 volts . should i change some parameters like RSS resistors or others?
how much should it be?
please help me by your useful tips and experiences.
with Regards.
nn20
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Old 15th August 2012, 01:56 AM   #2263
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Hi nn20
greetings just make the pcb irvynejay posted IRP 250N works on 60 volts+/-
no change of components needed
warm regards
andrew lebon
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Old 15th August 2012, 02:17 AM   #2264
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irs900d
Irs900 - YouTube
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Old 15th August 2012, 02:17 AM   #2265
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thanks to Mr lebon .and eager to read other new comments .
how much is the inductance of output inductor?
how many turns on that core( in video of irvynejay ) is needed?
i see 2 TO-220-package componnet at the bottom of PCB in that video.what are they?

Last edited by nn20; 15th August 2012 at 02:30 AM.
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Old 15th August 2012, 02:38 AM   #2266
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80uh ,irfb4227 ,gate r=10ohms
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Old 15th August 2012, 02:49 AM   #2267
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Quote:
Originally Posted by irvynejay View Post
80uh ,irfb4227 ,gate r=10ohms
oh excuse me . I completely forget the MOSFETs which should be connected to the bottom!

80uh and 0.47uf made LPF .is it?
is it the same for IRFP250N? (amplified square waves are the same but with different domains)

Last edited by nn20; 15th August 2012 at 02:53 AM.
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Old 15th August 2012, 02:54 AM   #2268
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.47uf 80 uh ,irfp250n= 100 gate r
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Old 15th August 2012, 04:17 AM   #2269
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ill wait for a better no errors pcb on IRS2000-3000D
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Old 15th August 2012, 05:49 AM   #2270
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Quote:
Originally Posted by thienchay View Post
time recent i'm so busy , so i not yet try this PCB .
I'm temporary check , and i see R 4K7 and 1K is wrong , Detex is deceit , and i see C 100uF is not a bypass Capacitor , it connect from Ouput of TL071 to -5V6 , try swap 4K7 - 1K , and remove C 100uF .
And i 'll check it soon to find a good sch and PCB , some mistake from me , sorry .
Regards .
is the resistor error only prob with this pcb or something else also...and can i replace cd4049 with 4050????
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