ucd 25 watts to 1200 watts using 2 mosfets - Page 219 - diyAudio
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Old 7th August 2012, 11:36 AM   #2181
manojtm is offline manojtm  India
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Hi stewin,
My old design, i was tested with common PCB and sound not good more noise so i discarded my design change to carrier based one. i use some part for my new class d.now i saw this thread it is great.so anyone can change this and design a good PCB don't ask me why i change L1 value(changing uH sound is good)some mistake is in my schematic i know that.Good luck

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MANOJ
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Old 7th August 2012, 12:46 PM   #2182
chago25 is offline chago25  Philippines
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Quote:
Originally Posted by stewin View Post
what voltage did you use and was the outputs heating ?
i use only 60 0 60vdc at 8 ohms. the mosfet still cold without heatsink only inductor coil has slight heat
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Old 7th August 2012, 06:52 PM   #2183
stewin is offline stewin  Kenya
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Quote:
Originally Posted by chago25 View Post
i use only 60 0 60vdc at 8 ohms. the mosfet still cold without heatsink only inductor coil has slight heat
has anyone tried +/-90vlts dc
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Old 7th August 2012, 10:19 PM   #2184
luka is offline luka  Slovenia
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Quote:
Originally Posted by stewin View Post
has anyone tried +/-90vlts dc
I used +/-75v and 4r with irfp4227 and zetex buffers between fets and IRS
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Old 7th August 2012, 10:32 PM   #2185
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JBL use LM311 and NE555 for protect, amp use TL081 on input and inverters...
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Old 8th August 2012, 09:27 AM   #2186
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My New PCB , IRS-2000D , will be IRS-3000D if used +/-130V .
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Old 8th August 2012, 10:41 AM   #2187
paskal9 is offline paskal9  Malaysia
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Quote:
Originally Posted by thienchay View Post
My New PCB , IRS-2000D , will be IRS-3000D if used +/-130V .
willing to share the schematics and pcb? looks like 2 pairs of mosfet with totem pole.

wicked amp for low impedance load
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Old 8th August 2012, 11:53 AM   #2188
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Quote:
Originally Posted by paskal9 View Post
willing to share the schematics and pcb? looks like 2 pairs of mosfet with totem pole.

wicked amp for low impedance load
Yeah , 2 pair mosfet for 1 channel , will load 2 Ohm at +/- 130V max , 3000W .
I'm not yes draw the sch , i can share my PCB , i'm remake of Detex IRS-3000D .
This is Layout
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Old 8th August 2012, 11:58 AM   #2189
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And PDF file ....
regards
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File Type: pdf IRS-3000D 2 _ PCB.pdf (75.3 KB, 924 views)
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Old 8th August 2012, 12:30 PM   #2190
stewin is offline stewin  Kenya
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Quote:
Originally Posted by thienchay View Post
My New PCB , IRS-2000D , will be IRS-3000D if used +/-130V .
are you sure it will work with that voltage?? what fets are you planning to use??
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