What Kind Of Capacitor Is Used In A Disposable Camera

Like a battery the capacitor holds the charge until its hooked up to a closed circuit. I think 84 is the value but dont have with me at this time the cap charge comes from a single aa 15v cell.

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A disposable or single use camera is a simple box camera meant to be used once.

What kind of capacitor is used in a disposable camera. If one capacitor goes bad then there is a chance of it exploding with all of the energy of others being discharged into the bad one. Photo flash capacitors need to handle large pulse currents at low duty cycle which make them special. Photoflash capacitors have capacitance in the range 80 160 microfarads mf and voltages from 180330 volts for flash units built into small disposable and compact cameras increasing for units delivering higher light energy.

A battery on the other hand can only discharge its power slowly by comparison. Some are equipped with an integrated flash unit and there are even waterproof versions for underwater photography. It is then used to very quickly pulse the stored energy through the xenon flash tube bulb.

This is a special aluminum electrolytic capacitor usually rated around 300v to 450v capacitance in the 120uf to 330uf range and rated for photo flash applications. It charges a large capacitor. The light energy emitted by a flash is supplied by the capacitor and is proportional to the product of the capacitance and the voltage squared.

The battery in a disposable camera is usually a single 15v aa battery. The capacitor is connected to the two electrodes on the flash tube at all times but unless the xenon gas is ionized the tube cant conduct the current. If one was to touch the charged capacitor it will shock them.

The flash circuit stores this high voltage charge in a large capacitor. The capacitor in a disposable camera fills up with power from the battery. This project details the process of building a device capable of charging a flash capacitor the type of capacitor found in disposable cameras.

So do not use this bank in a critical application. The main flash electrolytic capacitor is rated at 330v and 84 mfd. When the capacitor is fully charged it will contain a voltage very close to 15v correct.

Internally the cameras use a 135 film or an aps cartridge. Capacitors out of disposable cameras are going to be very cheap in build quality and are not intended for long term use. It looks like within the flash circuit there is a small transformer with a transistor oscillator circuit that does the duty of raising the voltage.

The capacitor is capable of discharging all of its energy almost instantly. Most use fixed focus lenses.

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