I am building a battery testing device that will run long-term (1-2 year) tests on different types of batteries. This device has a few resistors in the battery discharge part of the circuit that I would like to be as 'ideal' as possible. The resistors will see currents from 5 amps (the low ohm ones) to a single uA (the high ohm ones). Does anybody have any info about the various types of resistors. I need to know things such as the capacitance, inductance, etc... as well as the stability over time. I have heard that carbon resistors absorb moisture and will change value over time. I have heard that wirewound resistors have a high inductance. By the name, I would guess that thick-film resistors have a high capacitance. But... I don't know the facts or have any data to back up these general notions that I have. I have read a few resistor datasheets, but have yet to see one that lists these parameters. Thanks in advance, Eric -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics