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Old 19th October 2011, 06:41 AM   #571
cersepn is offline cersepn  United States
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Thank you, Salas and coolhead.

Is there a typo here? "10000uF/63V 10mm snap-in ''hot-rod''"
I can't find any Nichicon Muse/Panasonic FC/Elna Silmic II 10000uF with 63V, there's only 6.3V,10V, low voltage ratings etc
sg.element14.com/panasonic/eeufc0j103/capacitor-radial-6-3v-10000uf/dp/1848415

Last edited by cersepn; 19th October 2011 at 06:44 AM.
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Old 19th October 2011, 06:55 AM   #572
Salas is offline Salas  Greece
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SSLV1.1 builds & fairy tales
That's for full use of max setting. You gonna use a 18VAC max trafo. Get 10.000uF/35V long leads or snap in and you will be sorted.
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Old 19th October 2011, 07:36 AM   #573
cersepn is offline cersepn  United States
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Wonderful!

Where is everyone getting their Pana FC/Nichicon Muse/Elna Silmic 10000uFs at those voltage ratings?

My local farnell doesn't sell those models.. There's only these:
NICHICON|TVX1E103MDD|CAPACITOR, 10000UF, 25V | element14 Singapore
PANASONIC|ECOS1HA103EA|CAPACITOR, 10000UF, 50V | element14 Singapore
NICHICON|LLS1V103MELA|CAPACITOR, 10000UF, 35V | element14 Singapore
PANASONIC|EEUHD1E103|CAPACITOR, RADIAL, 25V, 10000UF | element14 Singapore
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Old 19th October 2011, 07:49 AM   #574
qusp is offline qusp  Australia
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nichicon KG go up that high, silmic don't, they top out at 1000uf in the higher voltages. you can get the nichicon at parts connection, but to be quite honest, for this type of build i'll take high performance industrial grade caps over those. of the ones you've listed i would take the last. oh actually no, with 18vac secondaries that would be a bit close, is there a 35v in the same type?
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Old 19th October 2011, 09:13 AM   #575
Backbones is offline Backbones  United Kingdom
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I have had very good results with Mundorf AG caps for power supplies.
Don't know where you will get them in the USA but in the UK I use hificollective and have done for years. I'm sure Nick already has many customers in the USA and he is very reliable.
Also check out other power caps from Elna but not the Silmic on the same site.
black gate electrolytic capacitors page
Chris
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Old 19th October 2011, 10:27 AM   #576
merlin el mago is offline merlin el mago
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Quote:
Originally Posted by coolhead View Post
Cersepn,
I just learn about this, let me practice my maths.
If you only have Dx01, 2 and 3 , it is the old version. Newer one will be Dx01a, 01b, 2 and 3.

The dummy load resistor is calculate by 15V/0.45A=33.3ohm, power dissipate is 15Vx0.45A=6.75W, 5W is not enough. You just need one for testing both + and - board.

R101 should be 0.6V/0.45A=1.3ohm

Have fun.
How do you calculate for R101 0.6V?
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Old 19th October 2011, 10:30 AM   #577
merlin el mago is offline merlin el mago
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Quote:
Originally Posted by cersepn View Post
I use this United Chemi-Con 10.000uF/63V Digi-Key Digi-Key - 565-2698-ND (Manufacturer - ESMH630VSN103MR50T)
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Old 19th October 2011, 10:41 AM   #578
coolhead is offline coolhead  Malaysia
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Quote:
Originally Posted by merlin el mago View Post
How do you calculate for R101 0.6V?
Look at Salas post no 544, it is explained in there.
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Old 19th October 2011, 01:59 PM   #579
Backbones is offline Backbones  United Kingdom
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I'm putting together a split rail -25V-0-+25V for the BA-3 front end which draws per channel 50mA.
I'll go for a 23Vac output per secondary winding rated at 500mA. This should account for voltage drop acrss diodes and headroom for the regulator.
I might as well go for the 3.9 ohm 5W R101 (overkill here perhaps).
10000uF 63V on C105.
Dummy load should be 500ohms for each of the rails at 3W.
Comments please.
Chris
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Old 19th October 2011, 02:06 PM   #580
merlin el mago is offline merlin el mago
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Quote:
Originally Posted by coolhead View Post
Look at Salas post no 544, it is explained in there.
[IMG]Click the image to open in full size.[/IMG]
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