Re: wide range DC to 13.8V DC converter
On Fri, 30 Nov 2007 08:37:10 -0800 (PST), chris
<catsoup57@xxxxxxxxxxx> wrote:
Hi,
I am trying to figure out how I can make a regulator for a small wind
turbine. The output is to charge 12V lead acid batteries.
The turbine outputs from 0-110V - (usually around 20-30V). The normal
approach is to regulate to 13.8V, and dump the excess voltage through
a shunt resistor. However this seems very wasteful, and I was
wondering if there is a way of converting the excess voltage to
current?
A long winded way would be to convert the input to a simple square
wave, and pass it through one of set of transformers, which is
automaticaly selected based on the input voltage. So T1 could deal
with voltages 20-30V, T2 30-50V, T3 50-80V... Then rectify and
regulate the output to 13.8V. As I say, long winded! And there has to
be a better way!
Ideas?
Switching regulator?
.
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