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Old 25th February 2006, 07:36 AM   #1
maurycy is offline maurycy  United States
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Default Could you check my parts list?

Hi,

I have purchased Brian's LM3875 stereo non-inverting kit. I am also going to purchase an aluminum enclosure. My goal is not to make the unit fancy looking but to learn how to build amps since I am complete noob.

There is couple of things I need like trafo, switch, etc. I have put together a list of items from Parts Express. Could you guys check it out and let me know if I picked correct parts?

Here is the list:

Avel 250V 18V+18V toroidal transformer
http://www.partsexpress.com/pe/showd...number=122-620

RCA jack pair
http://www.partsexpress.com/pe/showd...number=090-278

Dual binding post (will need two)
http://www.partsexpress.com/pe/showd...number=090-475

SPST heavy duty toggle switch
http://www.partsexpress.com/pe/showd...number=060-370

IEC power jack chassis mount
http://www.partsexpress.com/pe/showd...number=090-442

I am missing a potentiometer but PE does not have dual gang pots. I will have to get it somewhere else so recommendations are welcome.

Thanks,
Alex
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Old 25th February 2006, 10:29 AM   #2
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Goldmine-elec.com


Pots
This one is very good for the price!
http://www.goldmine-elec-products.co...tem=1&mitem=37
This one has a Noble black 10k
http://www.goldmine-elec-products.co...item=1&mitem=6

Power jack chassis mount
http://www.goldmine-elec-products.co...item=2&mitem=3

Switch
http://www.goldmine-elec-products.co...tem=2&mitem=10


Apexjr.com

Rca jacks
http://www.apexjr.com/images/Bposts1.jpg


Output posts
http://www.apexjr.com/images/Bposts1.jpg

Power jack chassis mount
http://www.apexjr.com/images/APEXJREMIFILTER1.jpg

Switch
http://www.apexjr.com/images/switch.jpg

You can get your misc. at apexjr
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Old 25th February 2006, 10:36 PM   #3
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wrong picture for rca jacks($2 a pair.
here is the right picture

http://www.apexjr.com/images/RCA3.jpg
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Old 26th February 2006, 03:11 PM   #4
Leolabs is offline Leolabs  Malaysia
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Go for them.
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Old 26th February 2006, 03:34 PM   #5
Nordic is offline Nordic  South Africa
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Unless you are aiming to drive 4 ohm loads, i would go for a slightly higher voltage transformer, maybe something that would give closer to 35V after rectification... (35 / 1.41 =+-25V).

So, maybe look at

http://www.partsexpress.com/pe/showd...number=122-625

And if you consider the 1.6V voltage drop through the chip itself, one could go even higher.
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Old 26th February 2006, 11:05 PM   #6
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I don't see a fuse holder and fuses on any of those lists...

Something like this:
http://www.partsexpress.com/pe/showd...number=071-510
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Old 28th February 2006, 01:32 AM   #7
maurycy is offline maurycy  United States
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Thanks guys.

I will place an order this week. It is shame that Parts Express does not have dual gang pots. I will have to pay more for shipping of one item than the cost of the item alone.

Alex
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Old 28th February 2006, 06:01 AM   #8
Nordic is offline Nordic  South Africa
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Also look at suppliers like http://www.rs-components.com/index.html . My local branch is so close I can collect my stuff and save on haveing to pay shipping.
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