Re: Resistor value for battery charger
From: john jardine (john_at_jjdesigns.fsnet.co.uk)
Date: 11/19/04
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Date: Fri, 19 Nov 2004 01:13:12 -0000
"R Farris" <rf76309@worldnet.att.net> wrote in message
news:jAbnd.931755$Gx4.36595@bgtnsc04-news.ops.worldnet.att.net...
> Okay, I think this is a basic question...
>
> Bought an rechargable drill at a garage sale. Of course it doesn't work -
> because both batteries are discharged. Turns out the problem is with the
> battery charger. It is composed of a transformer that plugs into the wall
> and a base unit that holds the 12VDC battery.
>
> The wall unit works okay and produces 17VDC @ 400mA. The problem is with
> the base unit. When I took it apart I found a single ceramic resistor
that
> was wired in series - but it was burned beyond recognition.
>
> Okay, my question: what value of resistor do I need to buy to replace the
> burned one?
>
> rf78801x.att.net
>
>
Mine has a 4.7ohm 1Watt. (there's a IN4001 rectifier diode in there as
well).
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