People often ask: What’s the change between Projectors Epson projector lamps and Epson projector bulbs? The answer is nothing – nonetheless they are different to standard bulbs. Replacing a projector bulb isn’t simply matter of popping a new one in the plug, like a light bulb. The key component can be an ARC light (the identical sort used in hockey stadiums). This is packed with mercury vapour at extremely high pressure – a dangerous combination. The light is ignited by an electrical spark and is then maintained for a lower voltage.
Mercury vapour bulbs are complex pieces of technology, with a number of electrical components. The vital of these are ballasts which often, after the initial arc has been fired, control the quantity of current being fed through the bulb. The bulb can also contain a starter, one third electrode and a heat switch.