Aleph 3

vksamael · 24th May 2010, 08:44 AM

Hello
I whant build Pass Aleph 3 and i whant to know some things
On the board i must put 220uF electrolitic capacitor but i dont know whitch voltage ( i think that 25V be just fine )
and i whant put nichicon KZ 220uF/25V or be better to put 220uF/50V
Can someone say another capacitors ( black gate, elna silmic or vishay bc or something else whitch be better)
Resistor 0,47Ohma must be 3W or 5W i whant put mills ressistor 5W 0,47Ohma ( some sugestion please )
I whant make power supply with 2 toroidal transformer 2X18V 300VA it is enough. I will use panasonic 22000uF/35V ( 4 for chanel ) without R or L between capacitors
any advice is welcome
many thanks

vksamael · 24th May 2010, 09:19 AM

Hello again
i have another one question whitch heatsink ( from fischer elektronik or someone else ) you prefer for aleph 3
thanks

THS · 24th May 2010, 09:20 AM

Hi,
Better prefer 220uF/50V elec. capacitors, because 25V is the rail voltage and you will be on the limit using 25V capacitors.
Regarding the resistors you can use anything from 3W and up. Better look for not inductive resistors.
As for the power supply the transformers and the capacitors you want to use would be ok (if you manage to find 22000uF/50V it will be better for longer life and reliability).
Don't forget to use inrush current limiters (CL-60 thermistors) in series with the transformers primary.
Happy building
Thanasis

vksamael · 24th May 2010, 01:27 PM

Thanks for replay

now i must see what heatshink type i be use
any assistance is kind

vksamael · 24th May 2010, 07:56 PM

Hello its me again

i need help that i chose heat shink i think something from fisherelektronik or you people know something else and link to shop of heatshink
thanks

Zen Mod · 24th May 2010, 08:50 PM

it's easier that you make little research what's already available of fisher heatsinks in your country then inform us here , so we can help you to choose

in any case - you need 0,25K/W piece per channel , taking in account 100W of dissipation/ch and your climate

karajak · 28th May 2010, 03:15 PM

thanasis hi ! do you have any idea where can i find those thermistors ;(cl60)

THS · 28th May 2010, 05:42 PM

Hi karajak, look at these links. Prefer RS (more expensive but is a real pain to order from US)
CL-60 GE | Thermistor; 10 Ohms @ 25 C; 5 Arms (Max. | 2508822915 | ????? ?????? ???? RS Online

Digi-Key - KC006L-ND (Manufacturer - CL-60)

moe29 · 29th May 2010, 02:23 PM

Quote:

Originally Posted by vksamael

Hello again
i have another one question whitch heatsink ( from fischer elektronik or someone else ) you prefer for aleph 3
thanks

BIG ONES!

choose one you like, then get one twice as big. that's a good starting point.

karajak · 1st June 2010, 08:44 PM

thanasis many thanks !RS

is fine.

24th May 2010, 08:44 AM	#1
vksamael diyAudio Member Join Date: Dec 2006	Aleph 3 Hello I whant build Pass Aleph 3 and i whant to know some things On the board i must put 220uF electrolitic capacitor but i dont know whitch voltage ( i think that 25V be just fine ) and i whant put nichicon KZ 220uF/25V or be better to put 220uF/50V Can someone say another capacitors ( black gate, elna silmic or vishay bc or something else whitch be better) Resistor 0,47Ohma must be 3W or 5W i whant put mills ressistor 5W 0,47Ohma ( some sugestion please ) I whant make power supply with 2 toroidal transformer 2X18V 300VA it is enough. I will use panasonic 22000uF/35V ( 4 for chanel ) without R or L between capacitors any advice is welcome many thanks

24th May 2010, 08:50 PM	#6
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	it's easier that you make little research what's already available of fisher heatsinks in your country then inform us here , so we can help you to choose in any case - you need 0,25K/W piece per channel , taking in account 100W of dissipation/ch and your climate __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb

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24th May 2010, 09:19 AM	#2
vksamael diyAudio Member Join Date: Dec 2006	Hello again i have another one question whitch heatsink ( from fischer elektronik or someone else ) you prefer for aleph 3 thanks

24th May 2010, 09:20 AM	#3
THS diyAudio Member Join Date: Jun 2007	Hi, Better prefer 220uF/50V elec. capacitors, because 25V is the rail voltage and you will be on the limit using 25V capacitors. Regarding the resistors you can use anything from 3W and up. Better look for not inductive resistors. As for the power supply the transformers and the capacitors you want to use would be ok (if you manage to find 22000uF/50V it will be better for longer life and reliability). Don't forget to use inrush current limiters (CL-60 thermistors) in series with the transformers primary. Happy building Thanasis

24th May 2010, 01:27 PM	#4
vksamael diyAudio Member Join Date: Dec 2006	Thanks for replay now i must see what heatshink type i be use any assistance is kind

24th May 2010, 07:56 PM	#5
vksamael diyAudio Member Join Date: Dec 2006	Hello its me again i need help that i chose heat shink i think something from fisherelektronik or you people know something else and link to shop of heatshink thanks

28th May 2010, 03:15 PM	#7
karajak diyAudio Member Join Date: Jan 2008 Location: ATHENS	thanasis hi ! do you have any idea where can i find those thermistors ;(cl60)

28th May 2010, 05:42 PM	#8
THS diyAudio Member Join Date: Jun 2007	Hi karajak, look at these links. Prefer RS (more expensive but is a real pain to order from US) CL-60 GE \| Thermistor; 10 Ohms @ 25 C; 5 Arms (Max. \| 2508822915 \| ????? ?????? ???? RS Online Digi-Key - KC006L-ND (Manufacturer - CL-60)

1st June 2010, 08:44 PM	#10
karajak diyAudio Member Join Date: Jan 2008 Location: ATHENS	thanasis many thanks !RS is fine.

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