Re: Solar Charger Question

Joel Koltner wrote:
"RST Engineering (jw)" <jim@xxxxxxxxxxxxxxxxxx> wrote in message news:13ikjgdpliluo89@xxxxxxxxxxxxxxxxxxxxx
Why not just discuss it here or give a url to the information so that EVERYBODY that wants the info can have it rather than a one-on-one?

What he's talking about is (most likely) a so-called "maximum power point tracking" charger. If you Google the acronym, MPPT, you'll have lots of hits. Essentially you purposely change your operating point between the solar cell and the load to see whether you're not getting more or less power -- this is usually done with a microcontroller, as when using discrete op-amps/logic/etc. it can be difficult to avoid building oscillators. :-)


Essentially an oscillator _is_ what you are building but one with limited excursions and riding around the peak. The kids call that dithering I guess. Dang, now I revealed that I am over the hill.

--
Regards, Joerg

http://www.analogconsultants.com/
.

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