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4hv.org :: Forums :: General Science and Electronics
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Small Study on Disposable Camera Caps
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Backyard Skunkworks
Tue Aug 12 2008, 05:12AM Print
Backyard Skunkworks Registered Member #1262 Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
 		Just thought I should post this. I took a weekend to sort through a ton of used disposable cameras and come up with some hard data about the prevalence of flash capacitor sizes and different models. I know this isn't the world's most important thing but what the heck...

Flash capacitor overall occurence:
Capacitor Size Approximate Occurrence
80uF 20%
100uF 35%
120uF 40%
160uF 5%


Disposable Camera Model Known Capacitor Size(s)
Kodak FunSaver 80, 100, 120, 160
Kodak Powerflash 120, 160
Kodak HQ 80, 100
Kodak Plus Digital 100
Kodak MAX 100
Fujifilm QuickSnap 80, 100
CVS FLASH Camera 80, 100
Free Shot 80
Dakota Freeze Frame 100

Sample size was somewhat over 200.


...Which means the average flash cap would store 107uF at 330VDC.
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Myke
Tue Aug 12 2008, 06:18AM
Myke Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
 		I don't think I have seen any 160uF caps out of the 60 or so cameras I have taken apart unless the unmarked ones are 160uF... To me it seems like most of the camera caps are 120uF but that's just what I have seen.

Even though it's kinda useless like you said, it's still cool to know. smile
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aonomus
Tue Aug 12 2008, 12:43PM
aonomus Registered Member #1497 Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
 		I just checked mine, 8 are 80 uF and 10 are 120uF. No 160/100uF.
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Backyard Skunkworks
Tue Aug 12 2008, 04:48PM
Backyard Skunkworks Registered Member #1262 Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
 		Yeah, the 160s are pretty rare. 1 out of 20 on average. You can only find them in Kodak Powerflash and Funsaver models, the majority being in powerflashes. The long thin unmarked caps tend to be 100uF and the short thin ones are 80.

Main reason I did this was to get the 107uF average for roughly predicting the energy of a yet to be built cap-bank.
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Mads Barnkob
Tue Aug 12 2008, 07:44PM
Mads Barnkob Registered Member #1403 Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
 		From a normal old camera, I salvaged a 160uF.
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Firefox
Wed Aug 13 2008, 12:13AM
Firefox Registered Member #1389 Joined: Thu Mar 13 2008, 12:50AM
Location: Pittsburgh, PA
Posts: 346
 		He is right about the 160s, of 240 or so I've salvaged, I only found 10 or so. I thought the long unmarked ones were 120s, based on some RC time constant experiments I did, though I did find that the short unmarked ones were 80s, based on the same testing.
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Backyard Skunkworks
Wed Aug 13 2008, 03:40AM
Backyard Skunkworks Registered Member #1262 Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
 		Heh interesting about the long thn ones. The couple I tested were 100 but I better check now...

EDIT:
Looks to be kindof a mixed bag with some long thin ones at 120 and others at 100.
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