From: Jim Thompson
Subject: Re: 2 Switch, light bulb either/or thing.
References: <firstname.lastname@example.org> <email@example.com> <3DA2F4C2.4F6C5F22@webaccess.net>
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Date: Tue, 08 Oct 2002 16:19:42 GMT
NNTP-Posting-Date: Tue, 08 Oct 2002 12:19:42 EDT
Organization: Cox Communications
On Tue, 08 Oct 2002 15:07:51 GMT,
Chuck Simmons ,
In Newsgroup: sci.electronics.design,
Entitled: "Re: 2 Switch, light bulb either/or thing.",
Wrote the following:
|Jim Thompson wrote:
|> On Tue, 08 Oct 2002 07:40:59 -0700,
|> John Larkin ,
|> In Newsgroup: sci.electronics.design,
|> Article: ,
|> Entitled: "Re: 2 Switch, light bulb either/or thing.",
|> Wrote the following:
|> |On Tue, 8 Oct 2002 22:15:48 +0800, "Rheilly Phoull"
|> | wrote:
|> |>What would be wrong with "2 way" switches in this application ??
|> |I think 'two way' is SPDT, and 'three way' is DPDT. So 'two way' is
|> |good enough here.
|> I *think* SPDT are called "three-way" for some unknown reason ?:-(
|> ...Jim Thompson
|It is easily varified at a hardware store but I believe you are right.
It just struck me that the nomenclature must come from electrician
"Two way" switches are SPST and have TWO terminals.
"Three way" switches are SPDT and have THREE terminals.
"Four way" switches (used in between for more than two control points)
are DPDT and have FOUR terminals.
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| Jim-T@analog_innovations.com Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
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