heathkit tv
04-07-2004, 03:21 PM
Scroll nearly all the way down:
New Version of the Halo light (http://www.spectrum.ieee.org/WEBONLY/resource/apr04/0404tool.html)
Anthony
wa2ise
04-08-2004, 12:40 AM
You could approximate the same thing using a set of white Xmas lights strung around the back of a console TV set. Be sure to replace the blinkers with regular bulbs. If it's a B&W set you could use a few blue bulbs to get the "color temperature" of the backlight halo closer to that of the B&W CRT. I'd insert a diode to cut the brightness of the bulbs so the life of them are greatly increased. Or a light dimmer, though you might get RFI from it.
heathkit tv
04-08-2004, 12:46 AM
The diode is a neat idear! Wouldn't a diode bridge act as a rectifier and deliver a DC output? If so, then those Christmas lights would last nearly forever.
Anthony
The diose idea works very well. I have an old set of 8 lights with the mini screw bases and I installed a diode because I was tired of looking for the bad bulb all the time. It cuts the power in half, but the bulbs don't look much dimmer.