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Re: CGA Monitor Flyback ???
Most colour flybacks have built in diodes, or even doublers/triplers. I've
never looked at a cga monitor though.
Actual current from the flyback is generally pretty low, as the impedance is
high, hence the slower firing rate. I actually use flyback circuits on
several small TCs.
In normal use the frequency of the flyback circuit is much higher (10s of
kHz), and is locked to the line frequency of the display. When not synced by
the remaining circuitry and a video source, it's frequency wanders a bit.
Steve
----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, February 21, 2000 7:58 PM
Subject: CGA Monitor Flyback ???
> Original Poster: "William Parn" <parn-at-fgm-dot-com>
>
>
> Greets,
>
> I decided to try hooking up the guts of a CGA monitor to my
> TC last night just to see how it performs. It worked
> better than my 9kv-at-30ma NST. I was able to open the spark
> gap up to about twice as wide. Longer sparks and all too.
> It also only needed 40volts on the variac to get it going.
> Actually not much difference between 60 to 120 volts input.
>
> So now I am curious, Do you think this flyback is going
> through a diode turning it into DC. The bang rate was
> very steady, but it definately did not sound like it
> was doing 120bps, it sounded a lot slower than that.
>
> Also do these types of flybacks beat at 60 hertz or do
> they put out a higher freq? I hear a lot of cool sounds
> when I start powering up the variac.
>
> Does anybody have a guestimate on the voltage and
> amperage on these devices?
>
> This thing seems to like being hooked up to the TC
> much more than running a jacobs ladder. It starts
> to smake in about 15 seconds in the jacobs ladder.
> Doesn't seem to smoke when attached to the TC.
>
> Many Thanks,
> Bill Parn
>
>
>
>