AVR-Chat

I'm unsure if I want to go straight to my final design in one step.  I might want to build a simple/limited version first.  For my most simple version I have the current being regulated by a linear regulator, and all the controller needs to do it turn it off when the system reaches a set voltage.

More elaborate versions could include such things as pre-testing charge state, and automatic discharge of any remaining charge before charging.  However, my goal at the moment is just to get a simple one done and working.



--- In AVR-Chat@yahoogroups.com, Philippe Habib <phabib@...> wrote:
>
> I think that pretty much anything with an ADC would be enough.  You  
> could also get something with built in PWM so you could vary the  
> charge voltage as the charge nears completion.  The ATMega 16HVA, HVB,  
> and 32HVA, HVB are designed to be chargers.  You could also go with a  
> general purpose device.
> 
> Finally, although you can get by with a 6 or 8 pin chip for what you  
> want, you might want to go with more pins so you can dedicate pins to  
> the programming header.
> 
> 
> On Mar 13, 2010, at 11:01 AM, syberraith wrote:
> 
> > I want to build a battery charger with a bit of intelligence, just a  
> > bit.
> >
> > I would like the charger to check the battery voltage every so  
> > often, one a minute at most, and if it has reached a set value, I  
> > would like the charger to shut it self off.
> >
> > I would also like charging to commence with a push of button to  
> > prevent a power interruption from starting a new charging cycle.
> >
> > To accomplish this I was wondering what device would be  
> > appropriate.  All it has to do is control a relay, and have a single  
> > ADC.
> >
> > Any suggestions?
> >
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>