Re: How critical is the supply voltage for digital cameras?
From: Nicholas O. Lindan (see_at_sig.com)
Date: 12/22/04
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Date: Wed, 22 Dec 2004 22:34:19 GMT
Joerg <notthisjoergsch@removethispacbell.net> wrote:
>Just how critical is the voltage fed into a digital camera?
>
>In my case it is an older Nikon Coolpix 2100 where the AC adapter input
>says 4.2VDC. No specs about tolerance. The adapters one can buy state
>4.5V output so that seems ok. But what if someone wanted to rig such
>cameras into a fixed installation with power coming off the system?
Was the original 4.2 V adapter regulated? I am assuming unregulated
I design for 80-140 VAC operation, that's a bit much for consumer,
but I would bet this was designed for 120 +/ 10%. 4.2V + 10% = 4.62V.
I'd say if it stays lower than 4.6 it will be within the camera's
design spec.
If it runs on batteries it has to have a wide voltage range. Do
you know which battery control and regulator ICs it uses, the
spec sheets might give a clue.
-- Nicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics; Informatics; Photonics. Remove spaces etc. to reply: n o lindan at net com dot com psst.. want to buy an f-stop timer? nolindan.com/da/fstop/
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