Re: new vector monitor.

I thought about using a SVGA yoke, but they are all
bigger then 22 mm. I actually have a couple too. The
resistance and inductance on them is really still high
from what I have checked on some examples.

Fred
> I was working on a HV box 2.
>
> here is my contribution.
>
> 1 was going to use a philips tv transformer because they are cheap,
> using a WG7000 transformer may be better for international reasons.
>
> regulation is easy, use an opto-isolator on one of the low-voltage outputs for
> feedback.
>
> like everybody else i was thinking of a 120v feed through a monitor isolation
> transformer.
>
> i wanted to use a switching powersupply i.c. to do all the work, but
> unfortunatly all the ones i have seen so far run too fast.
> the TOPSWITCH series runs at 100khz!!! the fastest i think we could risk is
> 24khz.
> after that the transformer is in the twighlight-zone and the lifespan and
> performance is anybodies guess.
>
> I AM NOT GIVING UP ON THIS, i will find a switching circuit to do the job - if
> it takes forever!!!
>
> ABOUT THE YOKE - if we say for the sake of cost that we need a fast but std
> yoke, how about using a yoke for a svga monitor, they can run vertical
> deflection twice as fast as a tv yoke.
>
> if we have to go custom then we should think VERY carfully about what tube to
> use, you cant change your mind afterwards.
>
> i would choose a modern flat tube, size 20-29".
> it would be good if the same yoke could work on a range of tube sizes from the
> same series.
>
> slightly off topic, anybody thought about making a vector monitor from an old
> radar terminal?
>
> L8r.
>
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Received on Thu Jun 13 09:52:58 2002