Electrodeless lamp | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-01-21

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electrodeless_lamp


00:01:12 1 History
00:07:00 2 Plasma lamps
00:10:38 3 Magnetic induction lamps
00:18:40 3.1 Advantages
00:20:30 3.2 Disadvantages
00:21:14 4 See also



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SUMMARY
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The internal electrodeless lamp or induction lamp is a gas discharge lamp in which an electric or magnetic field transfers the power required to generate light from outside the lamp envelope to the gas inside. This is in contrast to a typical gas discharge lamp that uses internal electrodes connected to the power supply by conductors that pass through the lamp envelope. Eliminating the internal electrodes provides two advantages:

Extended lamp life (internal electrodes are the most limiting factor in lamp life)
Ability to use higher-efficiency light-generating substances that would react with internal metal electrodes in conventional fluorescent lampsTwo systems are common: plasma lamps, in which electrostatic induction energizes a bulb filled with sulfur vapor or metal halides, and fluorescent induction lamps, which are like a conventional fluorescent lamp bulb that induces current with an external coil of wire via electrodynamic induction.