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Old 29th January 2011, 07:23 PM   #141
a.wayne is offline a.wayne  United States
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Question Apex, is this an 8 ohm only amplifier? if not isn't PSU filtering a bit small ?


regards
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Old 29th January 2011, 07:35 PM   #142
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Originally Posted by a.wayne View Post
Question Apex, is this an 8 ohm only amplifier? if not isn't PSU filtering a bit small ?


regards
Why do you think 4x10000uF/100V per channel is to small?
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Old 29th January 2011, 11:48 PM   #143
alex mm is offline alex mm  Europe
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.....I have try to layout PCB for SR 200 V2 but it's difficult to do sigle sided ...
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File Type: jpg sr200 v2 pcb.jpg (227.2 KB, 2353 views)
File Type: jpg sr 200 v2 photo.jpg (199.5 KB, 2219 views)
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File Type: pdf SR200 V2.pdf (136.6 KB, 714 views)
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Old 30th January 2011, 12:17 AM   #144
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.....I have try to layout PCB for SR 200 V2 but it's difficult to do sigle sided ...
Thanks for try 15k must be connected to +15V not to +Vcc...
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Old 30th January 2011, 07:17 AM   #145
alex mm is offline alex mm  Europe
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Smile Revised PCB .....

..... Revised PCB this time , much better I hope ....

Alex.
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File Type: jpg sr 200 pcb.jpg (384.7 KB, 2081 views)
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File Type: pdf SR200 V2 PCB.pdf (139.3 KB, 750 views)

Last edited by alex mm; 30th January 2011 at 07:27 AM.
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Old 30th January 2011, 09:51 AM   #146
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Originally Posted by alex mm View Post
..... Revised PCB this time , much better I hope ....

Alex.
This pcb can be use, what is the size? BC639 can be use instead BD139, and only need 5mm hole in heatsink for TO92 case.
Regards
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Old 30th January 2011, 10:50 AM   #147
alex mm is offline alex mm  Europe
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..... size of PCB it's 162 mm x 65 mm .
Regards Alex.
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File Type: jpg sr 200 v2 all.jpg (254.9 KB, 1848 views)
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File Type: pdf SR 200 V2 PCB.pdf (143.9 KB, 1051 views)
File Type: pdf SR 200 V2 BW.pdf (41.8 KB, 880 views)
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Old 30th January 2011, 11:44 AM   #148
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..... size of PCB it's 162 mm x 65 mm .
Regards Alex.
DID U MADE THE AMP?
WHAT IS HE OUTPUT POWER?
POWER SUPPLY
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Old 5th February 2011, 01:34 AM   #149
Mamak is offline Mamak  Malaysia
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Originally Posted by juma View Post
THS4131 is pin-to-pin and functionally compatible with OPA1632.
thanks.i will try find this number
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Old 5th February 2011, 01:36 AM   #150
Mamak is offline Mamak  Malaysia
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any body can tell me what other number for this bjt.2sc1775 and 2sa872?
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