And don't forget that you need a very high impedance measuring device... ----- Original Message ----- From: "Bob Ammerman" To: Sent: Saturday, November 22, 2003 9:55 PM Subject: Re: Sensitive micro-ammeter? > Place a 1K resistor in series with the power supply. > > Every mV you see across that resistor corresponds to 1 uA of current. > > A 10K resistor will give you 10mV per uA > > A 100K resistor will give you 100mV per uA > > Of course, you must be aware of the reduced voltage seen by your circuit. > > Bob Ammerman > RAm Systems > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads