Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!hp-pcd!hplsla!tomb
From: tomb@hplsla.HP.COM (Tom Bruhns)
Newsgroups: sci.electronics
Subject: Re: Are switches supposed to spark?
Message-ID: <5170086@hplsla.HP.COM>
Date: 22 Aug 90 19:23:20 GMT
References: <27155@pasteur.Berkeley.EDU>
Organization: HP Lake Stevens, WA
Lines: 11


>Horowitz and Hill in The Art of Electronics show a "snubber" circuit
>for use with inductive circuits, a 100 ohm resistor in series with a 0.05uF
>capacitor, the combination in parallel with the load.  But they don't
>mention why they chose those values.

RCA thyristor manuals from the late 70's at least included an ap note on
snubber networks.  They have some nice design graphs, along with (as I
recall; it's been years) the philosophy.  Concise, practical info.
You will probably have to extrapolate a little for application to
mechanical switches, but it's a good starting point.