From: Jonathan D. <jdu...@ci...> - 2007-03-08 14:49:57
|
The two resistor will work if you use precision resistor. like 0.1% or even 0.01%. if you don't do this, you will have a 10% error because the % of the resistor is cumulative. my 0.02$ Dumarjo ----- Original Message ----- From: "patrick carosso" <car...@ya...> To: <sdc...@li...> Sent: Thursday, March 08, 2007 4:59 AM Subject: Re: [Sdcc-user] [OT] - ADC Ideas > > Use two resistors to lower the voltage! > > --- Markos <mar...@ya...> wrote: > >> Hi guys, >> maybe this is a little offtopic, but >> i'm sure you could >> help me. I'm implementing a simple battery charger, >> and I need to >> messaure voltages ranges from 0 to 12 V. >> ¿Could I use the PIC integrated ADC to messaure >> above 5 V (provided that >> I use the voltage reference pins tied to 0 and 12 V, >> for example)? Most >> external ADC have a 0 to 5V input range.... >> How would you guys solve this? Any Ideas? >> >> Thanks in advance. >> >> >> > ------------------------------------------------------------------------- >> Take Surveys. Earn Cash. Influence the Future of IT >> Join SourceForge.net's Techsay panel and you'll get >> the chance to share your >> opinions on IT & business topics through brief >> surveys-and earn cash >> > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV >> _______________________________________________ >> Sdcc-user mailing list >> Sdc...@li... >> > https://lists.sourceforge.net/lists/listinfo/sdcc-user >> > > > > > ____________________________________________________________________________________ > Never miss an email again! > Yahoo! Toolbar alerts you the instant new Mail arrives. > http://tools.search.yahoo.com/toolbar/features/mail/ > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share > your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Sdcc-user mailing list > Sdc...@li... > https://lists.sourceforge.net/lists/listinfo/sdcc-user > |