OP didn't specify whether it actually works with a battery.
According to the Grimes link, most don't.
If it were mine, I'd put the elements in a Copal & be done with it.
The only thing I have to figure out is hou to attach that battery holder to the camera (a Linhof Kardan GT 4"x5"), right now I use a rubber band...
With A21PX 4.5-Volt readily available at about $12, what was the point of the jury rig?
The shutter works good, I can't check the speed accuracy, but I will assume that's allright.This is a good way to verify if the shutter works. A frequent seller on the 'Bay listed a 240mm lens in one of these shutters for months. I wrote her several times and could not get her to expend even a calorie on connecting some 1.5 volt batteries to test the shutter. Odd, as if she really didn't want to sell it.
Odd, I wonder what the reason for non-importation of a chemistry battery available in other Voltages. Perhaps testing or documentation (in all EU languages) or some other requirement. I know European models of cars are often not available in US for testing cost reasons.That battery might be available in the San-Francisco bay area but not in the EEC.
I saw two on the internet: one at Aliexpress and one on Amazon.com, which was'n available at the moment. Both weren't exported to the EEC nor to Belgium.
A specialised firm in the Netherlands (->EEC) couldn't provide anymore, neither could Schneider-Kreuznach, and I think that COMPUR doesn't exist anymore...
So, to quote Werner Herzog: "Jeder für sich und Gott gegen alle"...
Odd, I wonder what the reason for non-importation of a chemistry battery available in other Voltages. Perhaps testing or documentation (in all EU languages) or some other requirement. I know European models of cars are often not available in US for testing cost reasons.
But it is an alkaline battery!Most of the time in has to do with environmental regulations, public health and, last but not least, import taxes. Import from China, as Aliexpress is, is subject of a new tax regulation.
But, really, I wouldn't know for sure as things change all the time and sometimes getting overly complex.
Anyway, that shutter is firing well now.
Generally a battery will only supply as much current as the device will draw, that is the current draw is set by the device's internal resistance, not the battery's current capacity. Thus powering the shutter with 4.5V in 3 AAAs should not harm a device intended to run off a 4.5v small battery. You might be able to make a smaller battery by running it off a stack of 3x LR44 or SR 44 button cells. I bet if you could get an A21PX 4.5v battery and rip off the outer covering, you'd find 3 button cells inside anyway. Alkaline batteries are naturally 1.5v so higher voltages are made by wiring cells in series.
Cross Reference: A133, 523, PX21, EN133A, PC133A, V21PX, TR133A, 3LR50
A21PX is probably an American designation. I've also seen it called, I believe, A133 or 523. One site lists:
And the last part tells me it's 3x LR50 cells.
Ansmann probably also has it.The fact that your cross-reference says it's also the A19PX leads me to believe you skipped a line, somewhere. The A19PX does have snap terminals, but the A21PX doesn't.
Varta, which appears to be a European battery manufacturer, does have a V21PX in their inventory, and it appears to be a 4.5V 600 mAh battery.
The fact that your cross-reference says it's also the A19PX leads me to believe you skipped a line, somewhere. The A19PX does have snap terminals, but the A21PX doesn't.
Varta, which appears to be a European battery manufacturer, does have a V21PX in their inventory, and it appears to be a 4.5V 600 mAh battery.
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