Cypress has a ref design for the PsoC chip for a wattmeter as well >From: Gary Neal >Reply-To: pic microcontroller discussion list >To: PICLIST@MITVMA.MIT.EDU >Subject: [EE:] Measuring input power to 3 phase AC electric motor? >Date: Sun, 15 Feb 2004 08:18:22 -0500 > >Guys, > >I've got to measure the input power to an industrial 3 phase, 460V, 25hp >electric motor. I'm running a test using the motor as a driver and trying >to get an idea for efficiency of the mechanism I'm driving with the >motor. I'll be running at basically the exact same speeds/loads for all >conditions. > >Anyone know of some type of meter that measures input current, voltage, >(and power) for this type of setup for relatively cheap (less than a couple >$k). Ideally it would be able to output these values (RS232 or similar) >for data acquisition purposes over a test that'll run ~2 weeks continuous. > >Thanks, > >Gary > >-- >http://www.piclist.com hint: To leave the PICList >mailto:piclist-unsubscribe-request@mitvma.mit.edu _________________________________________________________________ Create your own personal Web page with the info you use most, at My MSN. http://click.atdmt.com/AVE/go/onm00200364ave/direct/01/ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads