Quote:
Originally Posted by earlyfilm
Whoa there Eric! There are three ways to avoid radiating yourself.
3) Disable the voltage trippler. Remove the 2nd and 3rd 8016's and feed the HV directly from the plate cap of the second now-removed 8016, to a standard high voltage 50-53 degree 5 inch test CRT. You will probably have to shim the yoke. The test tube is close enough to the sweep angle of the 5TP4 to not cause a problem, and any X-ray generation will be minimal at this much much lower HV.
James
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This option sounds the best for longer term testing and diagnosis, safer for me and the 5TP4.
I would think it should be fairly safe inside the barrel, it's thick Aluminum and the face of the CRT points downward against a thick, Aluminized mirror.
When I was testing my Philco 48-2500 I pointed the CRT away from me and viewed it in a mirror, later I installed it in the barrel, in any case I avoid being around it as much as possible.
I'm assuming most of the X-rays would be coming out the face of the CRT, the glass is very thin on the face of the 5TP4 and the TP-400 and possibly not Leaded.
Does anyone have any hard facts on the amount of X-rays produced by the 5TP4 operating at 28kv? Guessing the third HV rectifier tube will also be putting out some rays at that voltage?
This set uses three 1B3's by the way, not 8016's, maybe a different version?