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Re: SMPS high voltage
From: bmack[SMTP:bmack-at-frontiernet-dot-net]
Sent: Thursday, September 04, 1997 9:27 PM
To: Tesla List
Subject: Re: SMPS high voltage
Ken,
Wouldn't it be simpler to modify an old TV chassis?
A few caveats here.
1) Some Tv chassis are the "hot" type meaning that there
is no isolation from the ac line. Others have an on board smps
which supplies the isolation (and regulated dc to the HV circuits).
The normal horizontal sweep frequency driving the IHVT is 15.75KHZ
and uses the yoke assembly as parts of the resonant circuit.
Also, a modern IHVT has integral rectifier diodes in the secondary
which yeilds pulse dc -at- 25kv.
You could build your own drive circuit with a handful of components
but why bother?
The primary impedance also limits what freq vs input voltages will
get you where you want to be.
Have fun but be careful !
Jim M
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
> Subject: SMPS high voltage
> Date: Thursday, September 04, 1997 9:58 AM
>
>
> From: Kenneth Aaron[SMTP:kennetha-at-geocities-dot-com]
> Sent: Friday, September 05, 1997 4:03 AM
> To: tesla-at-pupman-dot-com; hvlist-at-anchorage.ab.umd.edu
> Subject: SMPS high voltage
>
> I've been thinking about a high voltage low current SMPS to drive
> a TC or plasma globe...
>
> If you take a readymade switching power supply (these work at several
KHz,
> and rewire the transformer, to give a voltage of 20-50V spikes (if this
> is not present already), instead of the filter that gives DC, this could
> be put into the primary of a flyback transformer, to give very
> efficient AC high voltage .
>
> Comments anyone ?
> ----------------------------
> Kenneth Aaron
> E-mail : kennetha-at-geocities-dot-com
> http://www.geocities-dot-com/SunsetStrip/8736/
> ----------------------------
>
>
>