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176 photoflash capacitors parallelled

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Freitsu
Sat Nov 20 2010, 11:56AM
Freitsu Registered Member #3147 Joined: Sun Aug 29 2010, 10:53AM
Location: Finland
Posts: 56
GhostNull wrote ...

lol xD all those months wasted D=

Disposable camera photoflash capacitors don't tend to be very reliable considering they only need to work for 27 cycles (number for exposures on a standard film thingy) and costs are kept at a minimum since they are disposable/single use
You seem to think I've collected these cameras for months when I actually got all the cameras from one guy at 1 occasion. So all the time wasted is "only" the time spent ripping them apart and soldering caps on PCB.

Time will tell if they're any good, so far I haven't had any problems with them except those that blew up but that is probably because they were internally shorted/dried out for some reason (probably because of age)
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ScotchTapeLord
Sat Nov 20 2010, 07:24PM
ScotchTapeLord Registered Member #1875 Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
Derating the voltage can work wonders for capacitor lifetime!
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Conundrum
Sun Nov 21 2010, 01:59PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
i did this a while back and ran into problems switching them..
didn't get a single capacitor failure though smile

-A
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101111
Sun Nov 21 2010, 02:40PM
101111 Registered Member #575 Joined: Sun Mar 11 2007, 04:00AM
Location: Norway
Posts: 263
Had a similar setup a few years ago.

Yours looks even better!
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Adam Munich
Sun Nov 21 2010, 09:42PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
I figured I'll post my photoflash bank. It holds somewhere around 200J.

Watermelon sizzles if you drop a piece on the wires.


1290375728 2893 FT100878 Dsc07815
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klugesmith
Sun Nov 21 2010, 10:37PM
klugesmith Registered Member #2099 Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1714
GhostNull wrote ...
Disposable camera photoflash capacitors don't tend to be very reliable considering they only need to work for 27 cycles (number for exposures on a standard film thingy) and costs are kept at a minimum since they are disposable/single use

Costs are reduced even further by re-use. Photofinishers get (or used to get) about $0.25 for used cameras, which are sorted by brand & returned to the makers. Kodak, for example, then gives each flash module an electrical test and a brand new AA battery before snapping it into a new disposable camera.
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Freitsu
Mon Nov 22 2010, 06:26AM
Freitsu Registered Member #3147 Joined: Sun Aug 29 2010, 10:53AM
Location: Finland
Posts: 56
Grenadier wrote ...

I figured I'll post my photoflash bank. It holds somewhere around 200J.

Watermelon sizzles if you drop a piece on the wires.
That's a nice start, are you planning to expand it further?

Klugesmith wrote ...

Costs are reduced even further by re-use. Photofinishers get (or used to get) about $0.25 for used cameras, which are sorted by brand & returned to the makers. Kodak, for example, then gives each flash module an electrical test and a brand new AA battery before snapping it into a new disposable camera.
I intended to point that out too, thanks.
I read on HvWiki that photoflash caps are good for 100.000 cycles or so.
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Adam Munich
Mon Nov 22 2010, 06:30AM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
If I find more cameras, sure I'll make it bigger. I need to make my rounds at the pharmacies soon anyway. It's been a while since I asked for some cameras.
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