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Old 16th July 2003, 08:05 AM   #1
digi01 is offline digi01  China
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Question Doubt that small CAP causes .

It is disadvantageous that the CAP amount is too small.
USE so little capacitance'S CAP will bear bigger electric current even reduce the CAP'S life.Is it such
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Old 16th July 2003, 08:26 AM   #2
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If I understand you correctly, the answer is no.

A capacitor has two ratings that you must understand.

The capcitance must be selected according to the use of that capacitor. For instance, if it is for decoupling, it needs to be quite high. If used for a filter, it can be very low.

The voltage rating is selected according to the voltage that will pass through it. Always use a capacitor that is 125% the voltage that will pass through it.

For example, if the voltage rails are 26 volts, you should use a capacitor with a voltage rating of 26 X 1.25 = 32.5. The nearest rating ABOVE that is 35 volts so use one of those.
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Old 16th July 2003, 09:59 AM   #3
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Hi Nuuk,

I think he might mean ripple current. This is a valid concern, and something that I have worried about. The operational life of a capacitor life is proportional to many things, and ripple current is one of them.

But, most GainClones are relatively low-powered affairs, and most of us diy-ers value our hearing so we won't tend to run them at very high levels for long. Hopefully, anyway

Cheers,

Mark
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Old 17th July 2003, 12:50 AM   #4
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mhennessy,thank you.
I worried about are ripple current.
My friend helps me to look over different brand CAP manual,Ripple current is as follows:
ELNA-SILMIC 1.985ArmsŁ¬
TONEREX 1.200Arms,
ELNA-FOR AUDIO 1.35Arms,
Ordinary product 1.400Arms.

I will study English hard
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Old 17th July 2003, 07:54 AM   #5
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Quote:
ELNA-SILMIC 1.985ArmsŁ¬
I understand that those capacitors are no longer being produced
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Old 17th July 2003, 09:26 AM   #6
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Oh digi01 sounds familiar in Head-Fi's/HeadWize's User.
Nice to meet you, I am also learning English as mush as I can. HK I am coming back in August. baby !

P.S: www.dictionary.com Good site!
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Old 17th July 2003, 09:43 AM   #7
digi01 is offline digi01  China
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S.C,Thank you.It is a good site

Nuuk,Your websites are very good,help me a lot,thanks!
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Old 17th July 2003, 10:34 AM   #8
Nuuk is offline Nuuk  United Kingdom
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Quote:
Nuuk,Your websites are very good,help me a lot,thanks!
My pleasure. I'm sorry that I can't write it in Mandarin or Cantonese
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