Article View: sci.electronics
Article #19976need electroluminescent power supply
From: Gordon Letwin
Date: Mon, 07 Nov 1988 18:36
Date: Mon, 07 Nov 1988 18:36
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1274 bytes
I have an LCD which is backlit by an electroluminescent panel. These things take a few milliamps of AC in the 60 to 80 V range, 60 hz to 400 hz, typically. This is part of a battery backed up system. I can brute force design a 12V DC to 70 VAC convertor, but it's crude and complex: an oscillator driving a voltage doubler chain followed by 2 complementary pairs to couple the panel's leads to the + and - DC, alternately, producing AC square wave. A small transformer would be better, and would guarantee true AC, but I'm having troubles locating an appropriate one. I've heard that there are small power supplies designed to drive these devices - DC to AC convertors of appropriate voltage and current. Does anyone have any pointers on these devices and where they might be obtained? thanks gordon letwin microsoft
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arc1-ca.pugleaf.net!utzoo!utgpu!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!agate!bionet!apple!bloom-beacon!mit-eddie!uw-beaver!microsoft!gordonlShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!agate!bionet!apple!bloom-beacon!mit-eddie!uw-beaver!microsoft!gordonl From: gordonl@microsoft.UUCP (Gordon Letwin) Newsgroups: sci.electronics Subject: need electroluminescent power supply Keywords: electroluminescent power Message-ID: <1176@microsoft.UUCP> Date: 7 Nov 88 18:36:37 GMT Organization: Microsoft Corp., Redmond WA Lines: 20