Re: SRSG timing light

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Malcolm Watts by way of Terry Fritz <twftesla-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

Hi Jonathon,
             The screen will indeed flicker at a 60Hz rate, that 
being the frame (vertical) scan rate. The LOPT plays no part in that 
frequency (outputs the horizontal scan - 15kHz or so).

Malcolm

On 10 Aug 2001, at 15:50, Tesla list wrote:

> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Kidd6488-at-aol-dot-com>
> 
> 
> >
> > Original poster: "Mike Novak by way of Terry Fritz <twftesla-at-qwest-dot-net>" < 
> > acmnovak-at-msn-dot-com> 
> >
> > Hello All, 
> > I've been away for quite some time.. my comp crashed bigtime... 
> > Anyway, as I was walking down the hall in my house, I glanced past a fan 
> > which was in the line of sight of the TV. The blades' shadows moved slowly 
> > like an async motor under a timing strobe. I was thinking " if the TV 
> > frequency was an even 60Hz, one could use it to phase in a SRSG... 
> > particularly, one with a clear rotor. " 
> > If this is insane or has already been discovered, lemme know... 
> >
> > -Mike 
> 
> 
> 
> I don't know that the TV is at 60Hz. Since it uses a flyback transformer,
the 
> frequency relys on the components used in the flyback's driver circuitry.
The 
> 60Hz coming into the set is rectified almost immediatly when it comes in, 
> then it goes through caps, transistors, and other things to drive the
flyback. 
> But I might be wrong, because I dont know if that frequency you see on
the tv 
> comes from the flyback, or something that IS at 60Hz. 
> So I checked it. I too, have a fan in the line of sight of my tv. It is a 
> three-speed fan. I checked all three paterns on the tv, then checked them 
> with a fluorescent light that sits beside the fan. The patterns all looked 
> similar, with the TV and the light. they are much easier to see with the TV, 
> probably even more if it was dark. 
> I've never tried it before, but I'm gonna put that
> <hot-streamer-dot-com/jonathon/motors/RSGdisk.htm>RSG disk on my sync motor 
> :-) and watch it at dark, infront of the TV... 
> 
> --------------------------------------- 
> Jonathon Reinhart 
> hot-streamer-dot-com/jonathon
> 
> 
>