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Article #19546Re: Flyback Transformers
From: Bob Myers
Date: Thu, 28 Jul 1988 18:08
Date: Thu, 28 Jul 1988 18:08
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A flyback transformer is that little odd-looking transformer that makes the high voltage (CRT anode voltage) in your TV set - at least, that's one example. It transforms the high-voltage (several hundred volts, typically) spike produced by the retrace, or "flyback", of the horizontal coils in the deflection yoke. (This spike results from attempting to quickly reverse the current in this inductance - V = L di/dt, right?) Hence the name. Used quite often in situations like this, where you need a high voltage at relatively low current. Unfortunately, I can't help the original poster in his search for a replacement part - there a literally hundreds of companies, many quite small, making magnetics for consuumer equipment. If the transformer you tried seems to be working OK (not running too hot, sufficient brightness, and the anode voltage to the CRT is not over nominal - excessive anode voltage produces excess X-ray emissions), then I wouldn't be too worried about it. Bob M. hplabs!hpfcla!myers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!ucsd!ucsdhub!hp-sdd!hplabs!hpda!hpcuhb!hp-sde!hpfcdc!hpfclm!myers From: myers@hpfclm.HP.COM (Bob Myers) Newsgroups: sci.electronics Subject: Re: Flyback Transformers Message-ID: <1320008@hpfclm.HP.COM> Date: 28 Jul 88 18:08:08 GMT References: <14741@shemp.CS.UCLA.EDU> Organization: Hewlett Packard -- Fort Collins, CO Lines: 20