identfying oddball capacitors

Started by Don, March 14, 2008, 02:18:10 AM

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Don

can anyone identify some of these odd capacitors I have lying around? (their values and usage )I know some of them are clearly marked as .022 and such, I dhave them mostly in that values because I like messing around with guitar tone caps .....what applications will these be good for ? I mess around w/ pedals, guitars and amps ...thanks




tehfunk

well, on top, the colorful ones, they are tropical fish capacitors, supposedly a "mojo" part, used in vintage effects, best known for being used in early vox and italian made wah pedals. The numbering system is as follows: first two bands (farthest from leads) are resistor color code system, third band = X 0.001 uF, yellow X 0.01 uF, green x 0.1 uf, fourth band (tolerance) white +/- 10%, black +/- 20% , 5th band red 250V dc , yellow 400V dc <<< that's all i could find. The rest of the capacitors, polystyrene, foil, etc., though pretty large, look like they'd be good components for vintage pedals... Hope that helps!
Carvin CT6M > diystompboxes.com > JCM800 4010

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brett

Hi
those big, low value caps (one is marked "Olson" and 600VWDC) are typically found in valve amps (ie around high voltages).  In stompboxes, their large size is a disadvantage.
The little silver and plastic bullets are polystyrene caps, useful for low tolerance around their nominal value, temperature stability, and perhaps low distortion.
cheers
PS (Tongue planted firmly in cheek here).  There are these special, really good capacitors that come in a wide variety of values.  If you can get your hands on "greencaps", give 'em a try.  Anyone who has used paper caps know they are *really* good.  No gunk at all.  And there's a super-duper version of greencaps that are self-healing should you go over-voltage, and they have extra low tolerance.  They're called MKTs.  :icon_wink:
Brett Robinson
Let a hundred flowers bloom, let a hundred schools of thought contend. (Mao Zedong)

earthtonesaudio

I'll have to take a pic of these "dogbone" capacitors I came across.  They're strange indeed.

GREEN FUZ

The one on the bottom might be a Sprague orange drop ( well it says sprague on it and it is orange) although it doesn`t conform to ones I`ve seen on the net. Supposedly very good for guitar tone controls. Couldn`t really comment, never having used them.

Can`t make out the value either so it might be useless for that application.

John Lyons


What about his one. Same size as a diode (found it in a diode bag)


.068uf but what type composition is it?
Basic Audio Pedals
www.basicaudio.net/

brett

Guessing here... but could it be a high voltage AC type (they usually have X25 or Y35 or similar codes on them).  They are for shorting RFI between household supply AC lines.  They are just about bomb-proof.  Though the ones I usually see and use are small rectangular prisms (10mm W, 6mm H, 3mm D).
cheers
Brett Robinson
Let a hundred flowers bloom, let a hundred schools of thought contend. (Mao Zedong)

John Lyons

The pic is deceiving, it's the same size as a 1n4001 but with smaller diameter leads.
The part you can barely read on top says X25v so I think it's 25v, pretty small for high voltage AC.
Thanks though! Any other ideas?
Basic Audio Pedals
www.basicaudio.net/

Dragonfly

Quote from: John Lyons on March 14, 2008, 02:11:43 PM

What about his one. Same size as a diode (found it in a diode bag)


.068uf but what type composition is it?

Looks like one of the Kemet caps...probably metallized polypropylene

Dragonfly