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#1 |
diyAudio Member
Join Date: Aug 2001
Location: Malaysia
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Hi,
Why is it called computer grade? What is the difference between standard electrolytic caps? Thank you. |
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#2 |
diyAudio Member
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![]() Also curious as to why it's called computer grade, seeing that they are never used in computers. Anyways, generally they are considered a higher-grade of electroyltic cap, and have very high capitance ratings and low DC resistance and ripple, among other things, such as 40V, 35000 uf.. which you will not see often with standard el. caps. -- Aaron |
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#3 |
diyAudio Member
Join Date: Jul 2001
Location: Orleans, France
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Computer grade capacitors are specified for permanent service at high temperature, over long periods (years !) and very low impedance at high frequencies.
Regards, P.Lacombe. |
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#4 |
diyAudio Member
Join Date: Feb 2001
Location: Columbia, SC
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They're called computer grade because they're used in computers--I work in a room chock full of them. Mind you, we're talking mainframe, not PC. Mainframes are built with much, much higher standards of reliability in mind than PCs (and you can draw your own conclusions about the reliability of networks based on PCs...).
Obviously, computers don't work on 400V rails, but there are 75-100V parts in the tape drives. It's a small matter to scale the voltages upwards to provide parts for other industries where (comparatively) high performance and reliability are valued. Grey |
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#5 |
diyAudio Member
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![]() Hey, What do you know, opened up my SGI (Silicon Graphics) box and I've got them in there too. Guess they are used. But then again this computer would cost more than my house to buy new. -- Finley |
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#6 |
diyAudio Member
Join Date: Aug 2001
Location: Slovenia
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Hi !
Are this computer grade capacitors good for audio ? (low internal resistance is good for power amp power supply) best regard, Leon
__________________
Music is a part of my life, DIY is my life. |
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#7 |
diyAudio Member
Join Date: Nov 2013
Location: Massachusetts
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Are computer grade caps truly "permanent"?
If you're recapping an amp that is 30 or 40 years old, with unknown hours on it, and it has computer grade caps should they be changed out for (say) current production 105c-rated caps? (apologies to the people of 2002 for disturbing the slumber of your thread.) |
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#8 | |
diyAudio Member
Join Date: Sep 2003
Location: SiliconValley
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Quote:
You will probably need to work with several vendors to find the best caps. Schedule 1 month from start.... search... search... shipping... clean... clean... rebuild. I slow charged tested each new cap, mainly out of fear. I used the light bulb on the AC for the first turn on, mainly out of fear. I ran each amp for 24 hrs with a 10 watt output into a junk woofer, mainly out of fear. Take several pictures and/or video+audio comments as you open the amp. There are several good websites and UTube videos by top technicians which document best practices and safe cleaning techniques. Mine= Soft brushes + big vacuum + controlled wattage soldering, mainly out of fear. Game of Thrones advice: "Winter is Coming" |
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Thread | Thread Starter | Forum | Replies | Last Post |
Rebuilding a DAC Audio grade or Computer grade caps? | gto127 | Digital Source | 0 | 28th January 2009 08:17 PM |
Computer Grade/Inverter Grade Cap | TunaFish | Parts | 2 | 11th March 2005 02:51 PM |
Computer Grade Cap or Inverter Grade Cap??? | TunaFish | Tubes / Valves | 10 | 11th March 2005 07:48 AM |
WTB: Computer Grade Electolytics | Gepetto | Swap Meet | 2 | 7th May 2003 01:23 AM |
What qualifies a capacitor as "computer grade"? | G | Pass Labs | 26 | 26th October 2002 04:56 AM |
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