6BK4/high voltage regulator tubes

[bgadow]

Yeah, its dark & disturbed!

When I was working on the CTC-15, which is missing the hv door, I watched as the glow of the regulator changed with screen brightness. That was kinda strange to see.

Getting further off subject, I was just rooting through some old Admiral literature looking for info on that "Royal" in the other thread...found a manual for an Admiral color set that uses a 21AXP22 & it includes an xray warning stating that without the safety glass in place there are soft xrays present up to 9" from the face of the crt, but only at the center area. The glass should stop them. It said one should not spend more than, IIRC, 17 hours per week that close to an unshielded screen.