- 3 Phase full controlled IGBT based Bridge to supply variable Frequency and variable voltage. - 1200v / 25 Amps AC =96 DC Converter Bridge power modules. - *Rating* *: *Suitable 3 HP AC Motor or 5 HP @ 60 % load. - *Input : *440 V 3 Phase AC Mains - *Output : *3 phase variable Frequency (10 - 60 Hz) and 3 phase voltage variable from (45 =96 440 V). - *Trigger Circuit :*PWM based 6 quadrant Trigger circuit for Triggering IGBTs to generate 3 Phase variable frequency O/P - *Metering: *Voltmeter and Ammeter with Selector switch for input AC supply. - - *Test Points : *Necessary test points to measure the I/P voltage, Triggering pulse of IGBTs. Test points for measurement and study provide= d on the front plate. - *Protection*: Fuse and Overload Protection , Over Current ,Under Voltage= , over Voltage protection .Field failure protection is in built , Hall eff= ect sensor isolation for DC link , PWM signal isolation using opto coupler*.= * - *Feed back and Control: *Built in voltage* *feed back to maintain constant speed against variable load. Speed setting via front panel Potentiometer. - *DSP Kit *to generate the necessary signal for speed control of AC 3 phase induction motor - Interface card from the DSP Kit to the Inverter Control is in built in the system. Connection via 14 pin DIP connector. - Necessary Program for the DSP kit will be provided along with the trainer. Does any body know any readymade development board which can meet current and power requirement of such a given specification.? I have googled to reach PICDEM MC PIC18F4431 ..any one with any previous experience working with it ... Any suggestion in this regard is most welcome --=20 Thanks & Regards Nidhi Mittal Hada Scientific officer D Computer Division Bhabha Atomic Research Center Mumbai http://nidhi-searchingmyself.blogspot.com/ --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .