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<blockquote data-quote="Stipe" data-source="post: 319345" data-attributes="member: 38614"><p>Evo tu u detalje sve. </p><p></p><p><span style="color: rgb(0,0,0)">HID lamps need an appropriate voltage across the electrodes to initiate and mantain glow discharge. Furthermore the ballast should provide sufficient current at glow discharge voltage(appr. 90V for HPS and 180V for MH) forcing the glow-to-arc transition. Therefore, the ballast should provide increased open circuit voltage (>600V) for MH lamps and high voltage pulses (2000 - 3000V, 1µs) for MH and HPS lamps.</span></p><p><span style="color: rgb(0,0,0)"><img src="http://www.ballastdesign.com/content_images/overfig2.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></span></p></blockquote><p></p>
[QUOTE="Stipe, post: 319345, member: 38614"] Evo tu u detalje sve. [COLOR=rgb(0,0,0)]HID lamps need an appropriate voltage across the electrodes to initiate and mantain glow discharge. Furthermore the ballast should provide sufficient current at glow discharge voltage(appr. 90V for HPS and 180V for MH) forcing the glow-to-arc transition. Therefore, the ballast should provide increased open circuit voltage (>600V) for MH lamps and high voltage pulses (2000 - 3000V, 1µs) for MH and HPS lamps.[/COLOR] [COLOR=rgb(0,0,0)][IMG]http://www.ballastdesign.com/content_images/overfig2.gif[/IMG][/COLOR] [/QUOTE]
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