Yahoo Groups archive

AVR-Chat

Index last updated: 2026-04-28 22:41 UTC

Message

Re: 3V supply - need regulator?

2006-11-30 by Richard Cooke

Oops - I meant 225mAH , sorry about that.  Regarding the 10 minutes of
ON time.  We haven't nailed the times down - 10 minutes is an
estimate.  We might have to throttle down to a much slower speed for
30 minutes to wait for the signal from the IR receiver module.  If
nothing has been detected after that we'll shut down.

--- In AVR-Chat@yahoogroups.com, "David VanHorn" <microbrix@...> wrote:
>
> On 11/29/06, Richard Cooke <rcooke@...> wrote:
> >
> > Hi Folks,
> >
> > I'm working on a battery powered consumer product that will use a 3V
> > button cell.  I think we've settled on the CR2032 which has a capacity
> > of 225uAH.
> 
> 
> Isn't that mAH?  1000 times more.
> 
> My question to the group - can I just use the battery or do you think
> > I'll need some type of regulator?
> 
> 
> What does the data sheet tell you?
> The battery will deliver 3.1 - 3.2V when new, and drop off as it ages.
> 2.0V is typically considered "dead".
> 
> The application will be mostly in the off state.  I'm planning to have
> > the unit ON after being plugged into the  item to be controlled and
> > then after 10 minutes go into the low power mode and then after 30
> > minutes turn itself off.
> 
> 
> Is there a real advantage to that low power interval?
> 
> 
> [Non-text portions of this message have been removed]
>

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.