Date: Fri, 7 Feb 2003 11:34:34 -0800 From: "barnacle" <[EMAIL PROTECTED]> Subject: Re: [LIB] Battery
Date: Fri, 7 Feb 2003 19:30:39 +0000 From: barnacle <[EMAIL PROTECTED]> Subject: Re: [LIB] Battery On Friday 07 Feb 2003 7:38 am, you wrote: > Date: Thu, 06 Feb 2003 23:34:18 -0800 > From: "Tom Stangl, VFAQman" <[EMAIL PROTECTED]> > >IIRC your biggest problem - if you use a battery plugged into the power > > socket - is identifying when the battery is discharged. The lib silently > > switches to its own battery and when that's empty, it dies without any > > warning. > > Would it be possible to build a circuit onto the external battery to > show charge state? I don't see why not, since there are many products > that have battery meters ON the battery these days. > > Or a circuit built into the cord between the ext batt and Lib that fed > from either batt, and lit an LED when there was no power coming in from > the ext batt. It should be possible - the easiest way to do it would be a circuit to ensure that the external battery shuts off complety when it gets below the level the Lib can use. The problem is that because there's still some voltage there, the Lib thinks it's on external charger even though it's drinking internal volts. Make it go away and the internal logic triggers on the 'low charge' from the internal battery properly. Neil ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest ************************************************************** ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
