Will i elecrocute myself??!!!!! Kodak B -C Flasholder

Asha

Asha

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Asha
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OK so i've had this flash for ages along with it's metal bracket to attach both it and the kodak 828 Pony camera together.

If i can modify a suitable power source to power the flash, what are the chances of giving myself a "shocking" experience? :D

I really want to give this a go but i require advice on how to not frazzle myself....there's a fair size capacitor in the flash which i reckon will give quite a punch.:eek::D
 
Rather you than me. I'm scanning the sky for a thunderbolt.

Actually I've no idea....what was that..:help:
 
I've no idea but for the love of everything, please, please, please ensure that you're recording yourself work and you'll post it on YouTube. Wear wellies and rubber gloves, that's sure to make everything perfectly safe. :)
 
Does it have a Xenon flash tube or does it take flash bulbs?


Steve.
 
Strappy said:
I've no idea but for the love of everything, please, please, please ensure that you're recording yourself work and you'll post it on YouTube. Wear wellies and rubber gloves, that's sure to make everything perfectly safe. :)
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U tube???.....Nah you get to see for free. I'll make dvds 'n sell you one! :D

Yes wellies....now does colour matter?!:D
 
Steve Smith said:
Does it have a Xenon flash tube or does it take flash bulbs?


Steve.
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Flash Bulbs! ....i av them too :)

I know you're all gunna be envious if i get this to work......there again i also know you're not all as insane as me to try!:D:D
 
Strappy said:
I've no idea but for the love of everything, please, please, please ensure that you're recording yourself work and you'll post it on YouTube. Wear wellies and rubber gloves, that's sure to make everything perfectly safe. :)
Click to expand...

Apparently asha wears rubber gloves and PINK wellies to bed (so I've been told) it's the only shocking part... Lol go for it and grab the capacitor. :D
 
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Strappy said:
Obviously. Green wellies would be best because green is earth, like grass grows out of earth and that's the same colour, right?
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Yeah but green??!!....sort of clashes with my blue eyes......it's all about how you look down here ya know! :D
 
Graham said:
Apparently asha wears rubber gloves and PINK wellies to bed (so I've been told) it's the only shocking part... Lol go for it and grab the capacitor. :D
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So when are you gunna return em seeing as you borrowed to go rummaging for macro bugs :p or do they marry well with ya pink jeans :D

I dunno about earthing myself to safeguard against thé flash, with the recent lightning storms here, i could do to be permanently rooted in soil! :D:D
 
I've got my binoculars ready, I'll be looking for the enormous blue flash!
 
robhooley167 said:
I've got my binoculars ready, I'll be looking for the enormous blue flash!
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I wondered how long it would be before you were going to drop by with your expert advice:D

Blue flash??.....haven't you noticed ,i'm going green, or is it pink :confused::confused::D
 
You'll be fine, no chance whatsoever of a shock from 22V. The capacitor will deliver the same miniscule current as the battery into the comparatively high body resistance.
 
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Asha said:
I wondered how long it would be before you were going to drop by with your expert advice:D

Blue flash??.....haven't you noticed ,i'm going green, or is it pink :confused::confused::D
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You know me far too well Asha, I'm always happy to watch other people injure themselves for the betterment of others!
 
thats what i like about this section of fusty crusties ,,Mr Asha asks a reasonable question and all you lot do is take the p and wait to see the car crash ,,,,,,,,,anyway Asha ,couldnt you stream it live when you touch the metal bits after charging the capacitor ? i could get the pizza on ,beer out the fridge ,sounds like it could be great entertainment :D
hope you get it sorted :snaphappy:(y)
 
Asha said:
there's a fair size capacitor in the flash which i reckon will give quite a punch.
Click to expand...

Asha said:
Flash Bulbs! ....i av them too
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If it's flash bulbs then you're not going to electrocute yourself. The voltage at the bulb or capacitor is never going to be more than the battery voltage.

Generally, a battery on it's own has too high an internal resistance to fire a bulb quickly enough to guarantee it is lit whilst the shutter is open (although flashes with such simple circuits did exist).

The normal way is to connect up the battery. a resistor (about1K), a capacitor and the bulb all in series (in a loop with the capacitor and bulb next to each other). When you plug in a bulb, it starts to charge the capacitor up via the resistor and the bulb itself. The resistor limits the current through the bulb to a level which will not fire it.

The camera's shutter contacts are connected to the capacitor and the bulb so that when they close, the capacitor is connected directly to the bulb, discharging the capacitor's charge directly into the bulb. The low internal resistance of the capacitor fires the bulb quickly and more consistently than just the battery would.

It used to be common to see these types of flashes with a 22.5 volt battery. Rectangular and similar in size to a current 9 volt battery but with a terminal on each end.

25548d1281517577-modern-batteries-vintage-flash-units-w-bulbs-specifically-argus-flash.jpg.att



Steve.
 
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Steve Smith said:
If it's flash bulbs then you're not going to electrocute yourself. The voltage at the bulb or capacitor is never going to be more than the battery voltage.

Generally, a battery on it's own has too high an internal resistance to fire a bulb quickly enough to guarantee it is lit whilst the shutter is open (although flashes with such simple circuits did exist).

The normal way is to connect up the battery. a resistor (about1K), a capacitor and the bulb all in series (in a loop with the capacitor and bulb next to each other). When you plug in a bulb, it starts to charge the capacitor up via the resistor and the bulb itself. The resistor limits the current through the bulb to a level which will not fire it.

The camera's shutter contacts are connected to the capacitor and the bulb so that when they close, the capacitor is connected directly to the bulb, discharging the capacitor's charge directly into the bulb. The low internal resistance of the capacitor fires the bulb quickly and more consistently than just the battery would.

It used to be common to see these types of flashes with a 22.5 volt battery. Rectangular and similar in size to a current 9 volt battery but with a terminal on each end.

25548d1281517577-modern-batteries-vintage-flash-units-w-bulbs-specifically-argus-flash.jpg.att



Steve.
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Trust someone to come along and spoil a potential fun thread with intelligent comment.
 
NickT said:
I think you'll be safe enough at a mere 22.5 V. I think the unit takes a battery like this:

http://www.smallbattery.company.org.uk/sbc_a412.htm?a412,various manufacturers,412

Works out at about 70p per Volt though!
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I didn't know they were still being made. At that price, they might as well not be!

Two 9v batteries in series will work. One probably will too - especially if you replace the capacitor with something more modern and at least twice the capacitance.


Steve.
 
Expensive batteries, bulbs only available via eBay, if at all., burnt fingers removing the bulbs, no good with focal plane shutters unless you get FP bulbs - so many reasons to chuck it in the bin. That's what I did with my PF1B firing bulb gun, -never regretted it either.
 
Sorts the men from the "boys" if you can remember only using flashbulbs :D......so glad someone thought of electronic flashguns and couldn't wait to buy one and dump bulbs.
 
Asha, How can you get so much time, just do it and if you fry,I will pick up your bones. :)
 
NickT said:
You'll be fine, no chance whatsoever of a shock from 22V. The capacitor will deliver the same miniscule current as the battery into the comparatively high body resistance.
Click to expand...

Reassuring! (y) ....but am i convinced!??!! :D:D
 
donut said:
thats what i like about this section of fusty crusties ,,Mr Asha asks a reasonable question and all you lot do is take the p and wait to see the car crash ,,,,,,,,,anyway Asha ,couldnt you stream it live when you touch the metal bits after charging the capacitor ? i could get the pizza on ,beer out the fridge ,sounds like it could be great entertainment :D
hope you get it sorted :snaphappy:(y)
Click to expand...

If I want a straight sensible answer, i avoid f&c and head for google!! :D:D
 
Steve Smith said:
If it's flash bulbs then you're not going to electrocute yourself. The voltage at the bulb or capacitor is never going to be more than the battery voltage.

Generally, a battery on it's own has too high an internal resistance to fire a bulb quickly enough to guarantee it is lit whilst the shutter is open (although flashes with such simple circuits did exist).

The normal way is to connect up the battery. a resistor (about1K), a capacitor and the bulb all in series (in a loop with the capacitor and bulb next to each other). When you plug in a bulb, it starts to charge the capacitor up via the resistor and the bulb itself. The resistor limits the current through the bulb to a level which will not fire it.

The camera's shutter contacts are connected to the capacitor and the bulb so that when they close, the capacitor is connected directly to the bulb, discharging the capacitor's charge directly into the bulb. The low internal resistance of the capacitor fires the bulb quickly and more consistently than just the battery would.

It used to be common to see these types of flashes with a 22.5 volt battery. Rectangular and similar in size to a current 9 volt battery but with a terminal on each end.

25548d1281517577-modern-batteries-vintage-flash-units-w-bulbs-specifically-argus-flash.jpg.att



Steve.
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Thanks for the insight / information Steve.........I was going to use two 9v batteries to get somewhere near to the original voltage.
 
ChasG said:
Trust someone to come along and spoil a potential fun thread with intelligent comment.
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It's a rarity but yes, occasionally there are intelligent comments made in f&c ........ finding them is the fun! :D
 
NickT said:
Expensive batteries, bulbs only available via eBay, if at all., burnt fingers removing the bulbs, no good with focal plane shutters unless you get FP bulbs - so many reasons to chuck it in the bin. That's what I did with my PF1B firing bulb gun, -never regretted it either.
Click to expand...

If i didn't have the camera to go with the flash then very likely it would end up at a car boot ( almost equivalent to a bin is it not! lol)
 
excalibur2 said:
Sorts the men from the "boys" if you can remember only using flashbulbs :D......so glad someone thought of electronic flashguns and couldn't wait to buy one and dump bulbs.
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but them there flashguns cost more than ten bob Brian ..... quite daring for some of us to take the plunge :D:D
 
medwaygreen said:
Asha, How can you get so much time, just do it and if you fry,I will pick up your bones. :)
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I never have time ......I waste it all fartin about with projects like this :ROFLMAO:

Maybe I best wait 'til after sept otherwise i may never get to Kent!

There again I'll bring the gear with me and YOU can trigger the shutter :runaway::D:D
 
Steve Smith said:
Or unless you have a camera with a sync socket specifically for bulbs.


Steve.
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A man who knows what he's talkin' about(y)............................. I could have been similar but was only interested in studying girls at school:D
 
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