We had our AC Point-o-lite litted this evening, not for very long, as we want to preserve the lamp for as long as possible, it was in a right state (https://trad-lighting.net/gallery/displayimage.php?album=15&pid=246#top_display_media) when we go it, and were remembering that the seller was chuffed that we'd chosen to restore (https://trad-lighting.net/gallery/displayimage.php?album=15&pid=249#top_display_media) it rather than 'upcycle' it.! :bulbman:
Also, the resistance gets rather warm (around 300℃ eeeek...!) so leaving it on at this time of year isn't exactly comfortable, this is definitely a wintertime lamp :lol:
300C? My gosh that's like soldering temperatures! I suppose this runs on DC instead of AC, so resistance is (was) the only option for current limiting.
No this is the AC one. :bulbman:
How odd, I wonder why they would use a resistor instead of a choke. Although I have seen similar things done for spectral lamps so maybe it's more preferable for scientific applications, who knows.
I'm not sure, maybe because that's what they had back in the day when it was made. :wndr:
It certainly is reliable.!