All UV discharge lamps require power supplies, this provides a means to ignite the lamp and also control the power required for the process. The power supply should be selected based on the particular lamp, application and environment they are to be used in. To gain the best curing performance considerations include lamp length and power, lamp doping, and available electrical supply and stability.
A choke, also known as an inductor or ballast, is a device used in electrical circuits for controlling current. They can be used in simple UV power supplies to control the lamp current. The lamp and environment in which it is operated controls the voltage at the given current. The combination of all provides the overall lamp power and the level of UV produced.
Ignitors provide the high-striking voltage needed to ignite a UV lamp when used on a UV system powered by chokes. This is because there is generally insufficient supply voltage available to do so. Chokes and ignitor circuits can be used to power lamps up to 500mm in length. Any power switching has to be managed by the combination of chokes selected.
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