Philco Roundie Hybrid

[DaveWM]

dupe post

[DaveWM]

hmm says to use a high voltage prob and a vtvm. I only have a reg hv prob with the built in meter. this is to set the HV to 25.5kv

I wonder if the VTVM would load it less and therefore get a different reading than my HV prob with the built in meter.

I assume this is pretty critical since it does not have any HV regulation built into the circuit.

[old_tv_nut]

Originally Posted by DaveWM

hmm says to use a high voltage prob and a vtvm. I only have a reg hv prob with the built in meter. this is to set the HV to 25.5kv

I wonder if the VTVM would load it less and therefore get a different reading than my HV prob with the built in meter.

I assume this is pretty critical since it does not have any HV regulation built into the circuit.

My guess is not SO critical, and the HV meter is probably more accurate, although the number in the manual may be fudged to correspond to the VTVM reading in case that might be a little off. But remember, the serviceman would not have a VTVM traceable to national standards and wouldn't be expected to, so I say either way should be fine.
25.5 kV sounds like a case of too many decimal places to me.

[DaveWM]

I will get some screen shots later. looking good. I was watching rockford on it last nite, fun stuff. I need to touch up the purity a bit (dragnet red was a bit yellow down on the bottom) if a manual degausse does not do it.

[DaveWM]

screen shots

[zenith2134]

Wow !! That set looks phenomenal.