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Old 6th April 2012, 09:25 AM   #1961
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Thanks Vitalιca
I have not done anything in particular I like to have friends.
So simple.
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Old 6th April 2012, 02:11 PM   #1962
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Originally Posted by bigpanda View Post
That thread is still open but not popular now. I still have some boards for them. If you are not serious, do not ask me to send invoice. Too many chicken-outs (after issuing invoice) .


4shared folder - goldmund

4shared folder - gm_white
Thanks for sharing!
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Old 7th April 2012, 12:03 PM   #1963
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If anyone can help me to furnish my BOM, please do so. Some of the components may not have a proper rating. For those who had finished and experienced, please comment on those ratings and make it easier for those who are going to work on this project.

For the 4.7pf caps on the main board, will 5p be as good? Thanks.


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Old 7th April 2012, 12:09 PM   #1964
AndrewT is offline AndrewT  Scotland
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What is the accuracy of the 5pF alternative? could it be +-1pF?

What is the required accuracy of the 4.7pF?
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Old 7th April 2012, 01:17 PM   #1965
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Hi AndrewT,

Thanks for reply.
Less say the spec from the vendor would be 10% (I will confirm with them) but the schematic never says anything about it.

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Old 7th April 2012, 03:19 PM   #1966
AndrewT is offline AndrewT  Scotland
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You will be very lucky to find a vendor that supplies 5pF +-10%, but there will be some.

The designer who specified 4.7pF probably also knew that @ that value most caps have a very wide tolerance range.
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Old 7th April 2012, 11:39 PM   #1967
AJT is offline AJT  Philippines
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^what do? buy a hundred of those caps and test on a meter for the closest match....
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Old 7th April 2012, 11:41 PM   #1968
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Originally Posted by AndrewT View Post
You will be very lucky to find a vendor that supplies 5pF +-10%, but there will be some.

The designer who specified 4.7pF probably also knew that @ that value most caps have a very wide tolerance range.
It is not easy to measure a 4.7pF cap to 10% !!
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Old 8th April 2012, 06:49 AM   #1969
oiphy is offline oiphy  Norway
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why don't you just use 5pF???
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Old 12th April 2012, 02:09 AM   #1970
Frosteh is offline Frosteh  United States
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Without reading through 197 pages of posts, could someone give me a brief rundown on this amp? Things I'd like to know:

1) Power output
2) Total cost (not incl. custom PCB) of parts
3) Recommended PSU or at least required input voltage
4) Performance compared to other DIY amps of similar price
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