From: "Frank Bemelman"
Subject: Re: simple over voltage protection?
Date: Thu, 19 Sep 2002 21:08:03 +0200
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Organization: EuroNet Internet
NNTP-Posting-Date: 19 Sep 2002 19:08:11 GMT
"Brill Pappin" schreef in bericht
> > > I'd like to provide some very basic over voltage protection for a
> > > am designing... there are obviously several ways to do it, but I
> > > what simple methods others have had good experience with.
> > >
> > > Any comments or schematics I can take a look at?
> > >
> > > - Brill Pappin
> > It somewhat depends on the application and the voltages.
> > Why not put in a voltage regulator? Or use an MOV and fuse.
> Yes, of course :)
> I'm interfacing an LCD (for production) however I need to protect the
> from overvoltage. The max voltage this thing will take is 5V.
Max 5V. What is the 'normal' voltage ?
> Anyway, a common problem with the LCD modules is that is you give them a
> little to much juice, you burn them out...
> Anyway, this is a production project, and I wanted to add that one little
> extra feature to protect the LCD, however I have to do it fairly cheaply,
> and fairly simply...
> I do have a few idea's on how I might do it, but I wanted to check with
> folks out in e land, and see if anyone had a good simple method they found
> worked well.
Of course your unit can also be damaged by reverse connections,
or too much voltage on the input(s).
Also, in 'production' stuff, there is little chance hooking things
up the wrong way, if you use different cables for different items.
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