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Old 13th July 2001, 02:56 AM   #2
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Most modern multimeters come with a thermocouple to measure heat...
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Old 13th July 2001, 03:17 PM   #3
hifi is offline hifi  Sweden
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or just a regular termometer....you can alwayse mount a thermobreaker at say 70c then it will break if it runs to hot


by the way mine is working to...buts it is an alpeh 3 now...woriking on a A2 =)

/micke
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Old 14th July 2001, 12:26 PM   #4
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Very Nice !

Rule of Thumb

55 - This is hot, but I can leave my hand here for a while
65 - This is hot, I can touch it, but I don't want to leave my hand here!
75 - Too hot to touch

First two probably OK for an Aleph, though Nelson will tell you you want the former. Later may be a problem !!

Kitchenware shops sell thermometers for cooking roasts etc - the kind you poke into the meat. Don't know what they cost, but should be able to handle the temp range.

PS: Send some photos to Desmond at Passlabs ( mailto:dharrington@passlabs.com )

cheers .... mark
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Old 14th July 2001, 12:41 PM   #5
hifi is offline hifi  Sweden
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on thermal handlin check a later thread with the subject

"can these heatsink dissiapte 125W??"

some nice info there.....


/micek
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Old 15th July 2001, 06:35 PM   #6
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It looks very good. Congradulations !!
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Old 16th July 2001, 01:18 AM   #7
scrazy is offline scrazy  Taiwan
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After measuring,the temperature is about 55~60.
Thanks all for your relpy.
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Old 16th July 2001, 06:48 AM   #8
scrazy is offline scrazy  Taiwan
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Another question:
How to reduce the noise produced by zener?
add a capacitor?
which value?
thanks
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Old 16th July 2001, 12:18 PM   #9
jam is offline jam  United States
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Default Noisy Zener

Scrazy,

I would put a 1 to 5uf capacitor across the zener.
You could also try replacing the resistor feeding the zener with a current source.

Jam

[Edited by jam on 07-16-2001 at 07:53 AM]
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Old 16th July 2001, 05:39 PM   #10
Evaas is offline Evaas  Canada
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Default heatsinks

Hi. Can I ask where you got those heatsinks, and how much they were? I'm still looking for some and having a real hard time.

Evan
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