Aleph 3

[Angel Puerto]

Hello to all,

I have finished the assembly of an Alehp 3 taking advantage of some heat sink that taenia.

Which the maximum temperature that can reach the heat sink for this assembly is?

A greeting to all.


Angel Puerto.

NOTE: Excuse for my English so bad.

 

[Mad_K]

I'm not shure if this info is what you are looking for but the rule of thumb for heatsink temperature is not to exceed 50'C. -> You should be able to touch the heatsinks without hurting your hands. The aleph 3 puts out some 200W of heat. This meas your heatsinks should have a total rating of about 0,125 'C/W. Hope this helps.

 

[Angel Puerto]

Mads

Hello Mads,

Thank you for your comments. But I believe that it warms but of that due that the power supply is bigger to the standard of the Aleph 3 having to support more power the devices.

Angel

 

[Angel Puerto]

Hello Mads,

This is the result 60º with the heat sink that I take advantage.
Vcc + - 33 V. also with a material that I take advantage.

Greetings.

Angel

 

[Mad_K]

Wow! +/-33V is more like Aleph5! You now have 33*2*4=264W to get rid of.... But 60'C is OK. I believe it will last for a really long time. Happy listening

 

[Miles Teg]

The problem with heatsink : I'm used to see a lot of heatsink without there value of C/W.

I dont' care with the fact I take the biggest heatsink as possible.

But can we determin the dissipation power by the weight of an heatsink ( and of all others part of metal)?

 

[vsr123]

Calculating Heatsink rating

You can calculate the heatsink rating with its dimensions using the tool in this link

I would also recommend the heatsink article, it makes for good reading.

vsr

 

[Miles Teg]

Thanks

 

[Angel Puerto]

Mads K

Hello

If I don't remember bad with this tension it gives 50W approximately

When I can a picture of the prototype, I´ll sent you.

Greetings to all.

Angel

 

[Angel Puerto]

Hello to all,

Here the pictures of the prototype are, they lack to add 2 condensers of
150.000 uf.
A thing that was me very well was to put 9 condensers of
2.200 uF Nichicon URZA in parallel with 150.000, in high and sharp means, transparency. Not small condensers of 0,1uF...

Greetings.

Angel.

NOTE: Lament my not well English one.

 

[Angel Puerto]

I sit down it I am a not well computer one, I have sent a different circuit.

I will ask like one makes.

Angel

 

[Angel Puerto]

I think that this time I have made it well.

Greetings.

Angel

 

[Angel Puerto]

This time I have made it well.

Angel

 

[Angel Puerto]

9 x 2.200 uF URZA Nichicom

Angel

 

[Angel Puerto]

2 x 150.000 uF, they lack two but of 150.000uF
and reels of 2,2 uH


Angel

 

[Josep]

Felicidades Angel!

Very soon I will finalize my Aleph 2 and I will send photos.

Saludos

Josep

 

[Taco]

Very nice, the big capacitators doesn't look very large (dimensions). Which voltagerating does these caps have?

 

[Angel Puerto]

The condensers are of 150.000uF 40V FELSIC it marks, but those of others
you mark they have similar dimensions, AEROVOX, etc...

Thank you Josep recommends you the detail of the condensers of 2.2000 uF it was
very good their result, guaranteed.

Thank you.

Angel.