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Old 7th March 2002, 11:34 AM   #1
diyAudio Member
 
Join Date: Mar 2002
Location: Queensland Australia
Default Surplus Parts Wanted (Aleph 4)

I am in need of parts for the Aleph 4. These include:

1. Transformer => 38-42V 500VA Min 2QTY
2. Caps => Large and lots
3. IRFP240 QTY24(matched) OR QTY50(Unmatched)
4. heatsinks => Large and lots

Preferably sellers in Queensland or Australia. Please inlcude details of parts\cost ect.

Thanks
Brent
 
Old 7th March 2002, 12:59 PM   #2
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Join Date: Feb 2001
Location: Adelaide, Australia
Brent

You will be very lucky to get this sort of stuff surplus ....... if I find any, I won't tell you, sorry

For the FETs try: http://www.supportcomponents.com.au

They are less than half the price from Farnell etc.

Toroids, try Harbuch electronics in Sydney. You will have to have them made I suspect.

For heatsinks try Conrad via Printed Electronics (the link to heatsinks is currently broken)

http://www.printedelectronics.com/pe/gomain.htm

Large caps ...... if you ever find a cheap source in Oz, do drop me a line

regards

mark
 
Old 7th March 2002, 04:24 PM   #3
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Join Date: Mar 2002
Location: Indonesia
Red face Parts for the Aleph 4

Hi Brent,

For the transformer, you better look at http://www.tortech.com.au/. Tel: (02) 9642-6003, Fax: (02) 9642-6127.
I have purchased from them and the quality is pretty good. If I were you, I will use 625 VA instead of 500 VA considering the price differences is not too much.
For the other parts, I couldn't give you any information because I found it in here (Indonesia).
Frankly, I have 48 (matched) IRFP240 but I will use it for my next project Aleph 1.2

Kind regards
Yamin
 
Old 7th March 2002, 05:53 PM   #4
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Join Date: Jan 2002
48 (matched) IRFP240, wow, I envy you. I am still struggling to get my 80 pcs for matching($$$$), and wonder if I can get 24 matched for Aleph 4.

MF, you have drop your cheers to regards, and .. kind regards.....
If because of my big mouth of trying to be helpful without checking the facts and causing ........, I apologize, hopefully learn to be more tackful in public forum.

Concerning the the output layout of Aleph 4, I find out the small "s" is connected to only one of the parallel mosfets. Is it a deliberately done( not neccesary to connect to the rest of the mosfet or sound better or...) or the original design is like this?

Thanks
__________________
Nicolas
 
Old 7th March 2002, 06:44 PM   #5
diyAudio Member
 
Join Date: Feb 2002
Location: Charleston, SC
If 37.5V is close enough to your requested 38, you could get the 1010VA torroid from www.apexjr.com although shipping to australia could be a lot. It's $35 w/o shipping.
 
Old 16th March 2002, 10:57 AM   #6
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Join Date: Mar 2002
Location: Sweden
I have some 31 000 uF/50V surplus for sale.

Please look at http://www.svalander.se/shoppen/shop1eng.htm

Can send them to any place in the world

Josef
 
Old 16th March 2002, 11:01 AM   #7
hifi is offline hifi  Sweden
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Join Date: Mar 2001
Location: sweden
ive got some matched mosfets for sale IR To264 24pcs also in sweden should you choose to buy caps from joseph

btw they are RIFA PEH169 105C made in -9806


/micke
 
Old 16th March 2002, 11:19 AM   #8
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Join Date: Mar 2002
Location: Sweden
hello again

just to complete - as a m o f my are RIFA 169 - 31 000uF/50V 105 degrees Celcius made nov 2001...

Josef
 
Old 16th March 2002, 11:37 AM   #9
hifi is offline hifi  Sweden
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Join Date: Mar 2001
Location: sweden
no there are note ;-) the ones i buyed of you where but not the onse kasra recieved they where all made 9806 check yourself.

But anyway the rifa PEH169 has a shelf life of >10yeras so i dont think it matters much

/micke
 
Old 16th March 2002, 12:53 PM   #10
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Join Date: Mar 2002
Location: Sweden
Sorry! I didn't know about the manufacturing-date on those caps. As you perhaps know the new ones to Kasra did go directly to him without my opening the original box from Rifa... So actually I don't know when they were made because I never looked at them. But I can assure you that the ones that I have for sale are made nov 01. I have checked them all after your last answer :-)
But as you say - it doesn't matter much. And if Kasra want to change them he got to those standing here just tell him to send me an e-mail and I'll be happy to switch them!
I don't like the idea that people buing from me are unhappy with what they get. Always complain and you can of course return the goods and get the money back if not satisfied!!!

:-)

Josef
 

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