Article View: sci.electronics
Article #21832Re: Design wanted !
From: Myron A. Calhoun
Date: Wed, 20 Dec 1989 18:43
Date: Wed, 20 Dec 1989 18:43
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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
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!deimos!harris.cis.ksu.edu!mac 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> Sender: news@deimos.cis.ksu.edu (USENET News Admin) Reply-To: mac@harris.cis.ksu.edu (Myron A. Calhoun) Distribution: usa Organization: Kansas State University, Dept of Computing & Information Sciences Lines: 27