Re: off topic. electronics project

Jim Tittsler <[email protected]>
Newsgroups gmane.org.user-groups.linux.dunedin.general
Message-ID <CAM5+EqjiK+YM0i=LPM9suBGWM1V3txrWpKD8SJTChyiECk1iJg@mail.gmail.com>
On Fri, Mar 29, 2013 at 10:56 AM, greig corlett <[email protected]> wrote:
> I was hoping to be able to use a 3 terminal regulator like the lm317 with
> current boost transistors but since this regulator has a max voltage of 37v
> would not be suitable.

One trick that I've used in the past is to raise the common pin of the
regulator using a zener diode.

But this seems wasteful if the goal is battery charging.  I wouldn't
expect the need for a terribly well regulated supply and would think
that you might be able to find one of the newer charge control ICs
which could be a better starting point.

Jim

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