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From: Martin Griffith
Subject: Re: Triac questions
Date: Wed, 20 Nov 2002 20:56:50 +0000 (UTC)
Organization: BT Openworld
NNTP-Posting-Date: Wed, 20 Nov 2002 20:56:50 +0000 (UTC)
X-Newsreader: Forte Free Agent 1.92/32.572
TRy and get ST AN439 application note, lots about snubbing
On 20 Nov 2002 12:10:42 -0800, email@example.com (Tom)
>I posted this yesterday but I think there is something wrong with my
>newsgroup server so I am going via Google this time. Appologies if it appears
>What exactly is meant by snubbing? I realise this is a CR network but
>what does it do and is it necessary for all Triacs?
>Does a Diac just act as a big voltage dropper when used to trigger a Triac
>(like a diode drops 0.7v) or does it have a more special porpose?
>Will a Triac rated at 400v 4A be ok to switch a light in a 240v rms
>Does anybody have a good method of phase control that can be driven by PC
>(other than the really complicated Microchip article I saw on PIC ref 4
>for the PIC12C508)
>regards and thank you
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