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Old 23rd November 2010, 03:20 PM   #981
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Location: delhi
Quote:
Originally Posted by apexaudio View Post
I will verify final pcb, what is pcb size.
You can use one 1W zener if you use +/-MV.
Regards
hi apex,

this is the final pcb.what about zf15 connected to nsl32.iwill be using
mur1560/stth15r06 instead of 1620ct.will it be ok.

pcb size is 296x62mm .

http://img535.imageshack.us/img535/3548/46787365.gif


thanks in advance

ravs


be a vegeterian.....
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File Type: pdf h900 3 c.pdf (63.0 KB, 755 views)

Last edited by ravslanka; 23rd November 2010 at 03:29 PM.
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Old 23rd November 2010, 03:46 PM   #982
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Quote:
Originally Posted by sekhar View Post
to ravslanka (u have done a great job)
i just love ur layout , i am gonna use ur layout, i have attached the picture of ur pcb with a few red circles whr i think the traces should be a bit thin cause producing high resolution pcbs is nt always possible and there can be shorts , so if possible reduce the track size at the indicated positions ............. and can u add few more o/p transistors if possible just to be on the safe side.

regards
sekhar

hi sekhar,

sorry for so late.actually iam going to make the pcb through screen printing.
the width of traces automatically get reduced a bit.anyway i have reduced
the width of the tracks for you.silkscreen is the same as for mine.if you
want further reduced the width please let me know.this pcb is almost 1 foot in length.locally only 1x1 foot copper sheets are available here.will you be able to source bigger copper sheets.if so i ll add another 2 pair of tranistors.
i doing another pcb also. power transistors on both sides 7 pairs.it is half
completed.will complete it soon.btw where you are getting your heasinks
from.i got my heatsinks for first 2 amplifiers from a scrap dealer(kabadi).
now i dont know where to get them .importing is out of question.no luck
in searching it in lr market in delhi.


regards


ravs

be a vegeterian......
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File Type: pdf h900 she.pdf (62.6 KB, 755 views)
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Old 23rd November 2010, 04:13 PM   #983
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hello apex sir ..

can u post XLR input vd stereo - bridge switch also volume control .......

thank u sir ...
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Old 23rd November 2010, 11:35 PM   #984
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To Mile
Is it possible to use F12C20C instead of MUR1620/SFA1603
Thanx
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Old 24th November 2010, 01:53 AM   #985
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Default apex

Quote:
Originally Posted by A square View Post
hello apex sir ..

can u post XLR input vd stereo - bridge switch also volume control .......

thank u sir ...
please
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Old 24th November 2010, 05:12 AM   #986
sekhar is offline sekhar  India
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Quote:
Originally Posted by AndrewT View Post
irf640 is also a To220 device.

or do you mean Toshiba's 2-10R1A package?
yes andrew toshiba's 2-10r1a package i am looking
for hexfet with full plastic body so that no insulation or just a mica is need when installing in the heatsink .


regards
sekhar
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Old 24th November 2010, 10:32 AM   #987
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pcb schematic program
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Old 24th November 2010, 01:26 PM   #988
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Quote:
Originally Posted by irvynejay View Post
To Mile
Is it possible to use F12C20C instead of MUR1620/SFA1603
Thanx
F12C20C is dual diode, and can be use for H900 V2 or for TL072 class H step driver.
Regards
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Old 25th November 2010, 02:00 PM   #989
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hi apex,

no reply......
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Old 25th November 2010, 02:54 PM   #990
sekhar is offline sekhar  India
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hey ravanlanka hw is ur project going on ...... Can u post some pics of ur pcb ........


regards
sekhar
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