Re: Battery charging circuit

From: Watson A.Name - \ (NOSPAM_at_dslextreme.com)
Date: 10/24/04 

Date: Sun, 24 Oct 2004 06:51:16 -0700

"Clarence" <no@No.com> wrote in message
news:uI7ed.33522$QJ3.11413@newssvr21.news.prodigy.com...
>
> "Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com>
wrote in
> message news:10ni1iasis93u20@corp.supernews.com...
> >
> > "Clarence" <no@No.com> wrote in message
> > news:U6Sdd.16988$nj.8537@newssvr13.news.prodigy.com...
> > >
> > > <William P.N. Smith> wrote in message
> > > news:spdfn0pdabp0h5skavjijrqulfcabqtpsk@4ax.com...
> > > > "Clarence" <no@No.com> wrote:
> > > > >A 200 Amp 12 Volt Charger can be bought new for $120.00
> > > >
> > > > Really, where? Or are we talking about a battery booster at the
> > local
> > > > gas station to dump some uncontrolled charge into the battery?
> > > >
> > >
> > > I did a Google search, there were many hits and the one I priced
as an
> > example
> > > was a 'three level' charger with a 500 Amp "booster" mode for
> > starting.
> > >
> > > There were 47,800 hits for a 200 Amp Charger and many were
duplicates.
> > > I am sure that many were the gas station variety.
> > > The one I priced was among the cheapest, but there were MANY more
to
> > choose
> > > from.
> >
> > We had an electric vehicle "golf cart" at work for a year, and I
read
> > the manual for it. They esxplained <typo?> that the three pronged
plug had
> one
> > pin for the onboard computer to control the charger. This was for a
> > 48VDC lead acid system. So the trend today seems to be towards more
> > intelligent chargers, and hence the higher prices.
> >
> > Interestingly, the book also explained that when the yellow "low
> > battery" light on the dash lit up, you had two hours or 36 holes of
> > golf left(!) :o)
> >
>
> Having designed some chargers for Golf carts and fork lift trucks, I
can tell
> you that More intelligent does not mean more expensive. My last
design was one
> third the cost to build for the simple single control unit it
replaced.

More silicon and less iron? In other words, a switch mode power
supply..

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