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From: mac@harris.cis.ksu.edu (Myron A. Calhoun)
Newsgroups: sci.electronics
Subject: Re: Design wanted !
Message-ID: <1989Dec20.184339.21760@deimos.cis.ksu.edu>
Date: 20 Dec 89 18:43:39 GMT
References: <1269@maestro.htsa.aha.nl>
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Reply-To: mac@harris.cis.ksu.edu (Myron A. Calhoun)
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Organization: Kansas State University, Dept of Computing & Information Sciences
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In article <1269@maestro.htsa.aha.nl> paulf@solist.htsa.aha.nl (Paul Ferron) writes:
>I'm looking for a design to convert a 9V DC to 1800V.

>It is for a Neontube  of about 500 mm long.

>The design has to be with  an oscilator.

>thanks in advance.

I hope you aren't trying to start with a 9-volt "transistor" battery!

I don't know how much current a Ne tube will need, but let's assume
one milliampere (that's about what I put through an Ne-2 pilot lamp);
let's also assume a 50 percent efficiency in the conversion:

0.001 amp x 1800 volts = 1.8 watts.
1.8 watts x 2 = 3.6 watts when allowing for conversion inefficiency.
3.6 watts / 9 volts = 0.4 amps = 400 milliamperes,

which is about 10 times the maximum practical current drain on a
little "transistor" battery.  Of course, several of my assumptions
may be wrong.
--
--Myron.
#----------------------------------------------------------------------
# Myron A. Calhoun, Ph.D. E.E.; Associate Professor
# Department of Computing & Information Sciences    (913) 539-4448 home