Using When a flash bulb is inserted, a capacitor is charged up to the battery voltage at a modest current. To flash the bulb, the charge of the capacitor is dumped through the bulb. The total energy used may be no more than that provided by the two or three D cells used in press cameras. The higher voltage is probably more reliable than the 3 or 4.
If you're making negative contact to the side of a AA battery, you need to use a real carbon-zinc cell. Like the classic Eveready silver one.
The reason is that on alkaline batteries which are pretty much all you see in supermarkets now , the shell is positive, not negative. Well I doubt very seriously that the bulb cares what the polarity is. There is no capacitor, it is not much more than a Brownie with a built in flash. Just check out your battery to see how it needs to go in.
I just striped off an energizer and it was a positive case, then I striped off a Toceba and it was a negative case. As long as you get one pole to the pin on the side and the other to the end, you got it made.
Carry it on your back all day with a backpack and a then M stateside and you would understand the rationale. I forget. Those were the fun days Jim M. The problem with a side contact for negative on a alkaline cell is that the other contact on the "button" of the battery will also be positive. That will result in zero volts for the flashbulb. Also, if the spike on the side is making contact, and the negative end also makes contact to the same side of the circuit, you get a dead short across the battery, and a possible fire.
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Spartaflex Camera Circa The Spartaflex twin lens camera was manufactured by the Spartus Camera Corp in the early s. It was constructed with a die cast front. The camera has an ebony finish with chrome plated metal parts. It was a dual focusing camera with synchronized flash, which was capable of capturing twelve exposures on standard roll film.
The Spartaflex featured a side sportsman viewfinder for eye level shooting and a large brilliant finder. It features a coated achromat f7. Spartus Press Flash Circa It was designed by the Utility Manufacturing Company, later bought by Spartus in As the Falcon Press Flash, this camera was the first camera with built-in flash reflector. It used old-style big Edison base flash bulbs and type film rolls. Spartus 35 F Model Circa The "F" designation indicated a flash-sync connector bolt on the top plate.
The same design was marketed from to under several names with only the front plate changed. This camera takes film which is widely available. It is advisable to cover the red window except when winding film in low light.
For quick snapshots, hold it firmly against your body. The table shows how this camera will perform using ISO film.
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