How are your modulating the load? PWM or linear? How are you dissipating 500 Watts of heat? External to the transistor or internally? The different methods have two very different sets of requirements for the device. Can you be more specific?
Joe Smalley Rural Kitsap County WA Fiesta 48 volts NEDRA 48 volt street conversion record holder [EMAIL PROTECTED] ----- Original Message ----- From: "Mason Convey" <[EMAIL PROTECTED]> To: "EV Discussion List" <[EMAIL PROTECTED]> Sent: Saturday, October 12, 2002 1:08 PM Subject: Looking for an IGBT/MOSFET > > I'm building a battery load tester for a school design project and I'm > looking for an IGBT or MOSFET to modulate the load. I was curious if > anyone had one sitting around (maybe from a blown controller?) that > you wouldn't mind getting rid of. I'm aiming for a maximum continuous > current of 50 amps, so something with a rating higher than that would > be great. The bigger the better... then I don't have to worry (as > much) about heatsinking and venting. ;) > > For those that are interested, this is going to be a pretty nice > device! My team is using LabVIEW to monitor and control our unit. It > will work with a "typical" automatic battery charger and allow the > user to select the desired discharge rate and load test cutoff > voltage. Our device will then activate the external charger, recognize > when the charger is done, deactivate the charger and perform the load > test, then re-activate the charger and report the results of the load > test. A nice, automated device for testing EV batteries... and not too > bad of a senior design project either! > > Anyway, if anyone has an available transistor that meets the criteria, > name your price and feel free to email me offlist. Thanks! > > mason > > > -~-~- mason s. convey -~-~- > > website. http://www.1opossum.com > pager.voicemail. 602.422.7996. [EMAIL PROTECTED] > email. [EMAIL PROTECTED] > AOL Messenger. mtnbikeAZ > Yahoo! Messenger. mtnbike_az >
