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Old 26th February 2003, 05:35 PM   #1
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Thumbs up Aleph 30 going on..

I am currently idle-testing my amp with no load and no signal attached.

Power supply comes from a 2x22 Vac transformer (500 VA), primary capacitors (20 mF per rail), then a R-C for each channel (and rail) (165 mOhm - 30 mF).

Both rails are at about 30V dc, which is quite high for a Aleph 30 but since my heatsinks are big enough I don't care.

After a hour the thermistor I use for inrush protection settled at about 72 °C, while the heatsinks are slightly different but at least 20 degrees below.

I noticed that the "signal" mosfets get quite hot: is a small heatsink mandatory or they can be avoided?

for now.. that's all folks!

Cheers

Andrea
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Old 26th February 2003, 08:34 PM   #2
Mad_K is offline Mad_K  Norway
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Default Re: Aleph 30 going on..

Quote:
Originally posted by Andypairo
least 20 degrees below.

I noticed that the "signal" mosfets get quite hot: is a small heatsink mandatory or they can be avoided?
!
If you run normal bias (5V acoss R11) on them, they can be avoided. (I don't use them).
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Old 4th April 2003, 12:00 PM   #3
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Talking At last.. it is (almost) finished!!

Here are some photos of this little monster.. upper and back plate are made of sanded aluminium, the light from the pushbutton is actually blue (even if it doesn't seem...)
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Old 4th April 2003, 12:02 PM   #4
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Next one
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Old 4th April 2003, 12:03 PM   #5
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another.. closeup of the rear panel
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Old 4th April 2003, 12:04 PM   #6
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inside view..
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Old 4th April 2003, 12:05 PM   #7
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a photo was supposed to be in the previous message...
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Old 4th April 2003, 12:07 PM   #8
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pant..puff... the last one!
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Old 4th April 2003, 02:39 PM   #9
moe29 is offline moe29  United States
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Phat!



nice case work



way to represent...

keep keepin' it real



m., out
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Old 26th April 2003, 01:20 AM   #10
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How did you cut the slots in the top/back?
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