is it a requirement to use some fort of soft-start or dimmer for a 2k Blonde (230 Volts version)?
I never had any problems with any 2k wattage lights so far, but this blonde I just bought seems to give me trouble. Just installed a brand new Osram FEX bulb in it (without toughing the glass envelope of couse) and the bulb blew within 2 minutes: it seems upon startup, one of the ends of the filament burnt loose (with a small blue flash). The loose end of the filament managed to fall right on the metal connector inside the bulb, so it continued to burn until I switched it off after 2 minutes - this is when I saw the problem. The lamp was in upright position and there was no vibration (light stand was used).
Are the FEX 2k bulbs for the Blonde more finicky? Or did I just happen to get a lemon as a bulb? Do they need a dimmer/soft start? The filament does look a bit more sturdy (though less well supported mechanically) than the 2kW's commonly used in fresnels, so does this maybe cause it to have a higher inrush current when switched on?
Edited by Marc Roessler, 17 August 2012 - 02:13 PM.