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From: hgw@julia.math.ucla.edu (Harold Wong)
Newsgroups: sci.electronics
Subject: Re: Light Dimmer
Message-ID: <809@kaos.MATH.UCLA.EDU>
Date: 27 Nov 90 01:49:18 GMT
References: <2570007@hppad.HP.COM> <1990Nov24.205337.18959@hayes.ims.alaska.edu>
Sender: news@MATH.UCLA.EDU
Reply-To: hgw@math.ucla.edu (Harold Wong)
Organization: UCLA Mathematics Department
Lines: 25

In article <1990Nov24.205337.18959@hayes.ims.alaska.edu> ftpam1@acad3.fai.alaska.edu writes:
>In article <2570007@hppad.HP.COM>, lindner@hppad.HP.COM (Steffen Lindner) writes...
>     I once had occasion to replace the SCR's in a commercial stage light
>controller.  That particular system had toroids (inductors) larger than glazed
>donuts.  I don't remember what the associated capacitors were; the coils were
>so large that they monopolized your attention!
>

Could someone explain the uses of toroids?  Specifically,
	For what purpose should they be used for.
	Where should they be used?
	How should they be used?
	What are the differences between the donut vs bar version?
	How do you determine the size you need?
	Should I wrap all my wires around toroids?

Any inspiration would be appreciated.  Thanks.

Harold

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Harold Wong         (213) 825-9040 
UCLA-Mathnet; 3915F MSA; 405 Hilgard Ave.; Los Angeles, CA 90024-1555
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