F3 and F4 Clone PCB Reissue group buy, also F5 PCBs - Page 62

rigma · 3rd February 2009, 10:41 PM

Just to be sure it is 10,000uf?

Tea-Bag · 3rd February 2009, 10:46 PM

Quote:

Originally posted by rigma
Just to be sure it is 10,000uf?

Rigma,
For F4 on Peters PS boards,
I used four 33,000uf Panasonic TSUP
Digikey P6924-ND

For F5, I went overboard and ordered 4 P10014-ND 47,000uf each. Probably way overboard.

TEA-BAG

rigma · 3rd February 2009, 10:48 PM

Thanks tea-bag

rigma

Peter Daniel · 3rd February 2009, 10:50 PM

We are talking about BOM as attached. It does not say actual value but "> 100000uF - 35V" which could mean that 10,000uF is a minimum (100000 is a misprint). I would go higher though, at least 4 x 15,000uF per channel.

rigma · 3rd February 2009, 10:53 PM

Thanks again Peter.

rigma

adn6244 · 5th February 2009, 01:35 PM

Quote:

Originally posted by Diomedian
It has previously been noted that the lead spacing of the resistors was 0.2", and that Peter recommended Vishay CFM-50 or Caddock MK132 resistors, both of which have 0.2" lead spacing. The Dales you use there are CFM-55s (or their military equivalent).

-j

I have a stupid question to ask here.

I went around searching for cmf50 and noticed that most of the stock mouser has is only 1/4W or 0.25W whereas MK132 smallest is 0.75W.

appreciate advice what is the minimum requirement as the range is quite big from 0.25W to 0.75W.

Thanks again

Peter Daniel · 5th February 2009, 01:37 PM

0.25W should not be a problem, higher wattage will work fine too.

adn6244 · 5th February 2009, 01:45 PM

Peter,
Thanks for the fast reply and the nice work on the pcb. I'll proceed with my parts order then. Wanted to get the F3 from you but it's out of stock...guess I'm late again!

npapp · 5th February 2009, 01:45 PM

Is it ok to use lsk170 for Q1 & 2SJ74 for Q2?

adn6244 · 5th February 2009, 01:54 PM

Quote:

Originally posted by Peter Daniel
0.25W should not be a problem, higher wattage will work fine too.

Peter,
my apologies, it's 1/8W for CMF50. Is this too low?

5th February 2009, 01:37 PM	#617
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	0.25W should not be a problem, higher wattage will work fine too. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

5th February 2009, 01:45 PM	#619
npapp diyAudio Member Join Date: Feb 2006 Location: New Jersey	Q1 & Q2 Is it ok to use lsk170 for Q1 & 2SJ74 for Q2?

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3rd February 2009, 10:41 PM	#611
rigma diyAudio Member Join Date: Sep 2004 Location: Nashville	Just to be sure it is 10,000uf?

3rd February 2009, 10:48 PM	#613
rigma diyAudio Member Join Date: Sep 2004 Location: Nashville	Thanks tea-bag rigma

3rd February 2009, 10:53 PM	#615
rigma diyAudio Member Join Date: Sep 2004 Location: Nashville	Thanks again Peter. rigma

5th February 2009, 01:45 PM	#618
adn6244 diyAudio Member Join Date: Nov 2008	Peter, Thanks for the fast reply and the nice work on the pcb. I'll proceed with my parts order then. Wanted to get the F3 from you but it's out of stock...guess I'm late again!