On Fri, 12 Mar 2004 15:29:05 -0500, Roberts II, Charles K. wrote: > Hello All > > I am working on a PIC based High Voltage module. The schematic of the > current meter portion of the module is attached. I am measuring the > voltage drop across a knowm resistor, but to do it I had to use two > voltage dividers to bring the levels to something I can read. I measure > about the same current with or without a load. What could be going on? > Loooking into the devider there are 50Meg Ohms to Ground, Is this what > is messing up my reading? Quite possibly, i don't think that the source impedence for the A2D modules is reccomended to be greater then 10K Ohms, try putting a 0.1uF capacitor across it to lower the impedence during A2D. Regards Alex Rice -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads