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11th September 2004, 07:59 PM
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#1 |
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diyAudio Member
Join Date: May 2002
 
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unknown capacitors
I recently acquired a boat load of capacitors from this researcher who was cleaning out his lab.
He organized them by capacitance in a box, but I'm still uneasy. What is the standard capacitance rating on caps? The reason I ask is there are really old caps in there and brand spanking new caps in there, some even have no ratings on them, just a serial number. My question is, if it has the following.. .47 100V +-10% .47 what? uF or milliFarads? Sometimes there will be 330 MFD is the capital M, used for micro or millifarads? I'm building a Car DC-DC converter for a carputer and the caps are the last thing I'm putting on... I really don't relish the explosion from misplaced caps on by awesome circuitboard. Eternalightwithin P.S. I got lots and lots of orange and green caps. ^^ 
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11th September 2004, 09:10 PM
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#3 |
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diyAudio Member
Join Date: May 2002
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here they are... the majority of them anyways
Cap pic 1
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11th September 2004, 09:13 PM
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#4 |
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diyAudio Member
Join Date: May 2002
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cap 2
2nd batch
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11th September 2004, 09:14 PM
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#5 |
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diyAudio Member
Join Date: May 2002
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3rd ones
3rd ones
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11th September 2004, 09:16 PM
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#6 |
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diyAudio Member
Join Date: May 2002
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4th and last
sigh... is there a way to cram them all in one post? I don't know how.
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12th September 2004, 04:32 AM
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#7 |
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diyAudio Member
Join Date: Feb 2004
Location: Vancouver
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If you want to post larger pictures you can use: http://www.imageshack.us/index.php
Then post the links to the pictures you have uploaded here. If you want to sell some of them, let me know  thanks |
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12th September 2004, 05:55 AM
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#8 |
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diyAudio Member
Join Date: May 2004
Location: manila
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if it says .47, that means it has .47uF or 470nF.
330MF means 330uF for the electrolytic. the other cap says .0068 which is 6.8nF or 0.0068uF. another says 1.0K, 1.0 is the value which is 1uF, K is for tolerance. |
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12th September 2004, 08:11 AM
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#9 |
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diyAudio Member
Join Date: Dec 2003
Location: New Zealand
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Hey,
That bright-orange colored one is a Sprague OrangeDrop, as used in Dynaco ST-70. The silver colored cylinderal one labeled 'TAS+' is a military quality Mallory Tantalum capacitor. The tantalum cap is really rugged, so it's the best one for DC-DC converter.  Cheers  JayJay |
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15th September 2004, 09:27 PM
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#10 |
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diyAudio Member
Join Date: Feb 2004
Location: Queensland
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Me thinks it might be time to invest in a multi meter that measures capacitance.
__________________
"It was the Spring time of the year when aunt calls to aunt like mastodons across the frozen waste." P.G. Wodehouse. |
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