INDUCTION MOTOR CONTROL

This gate drive described hereunder uses a small pulse transformer combined with the memory effect of the Power Mosfet .The transformer is operated as bi-directional energy / signal link ( gate control/Alarm signal ) between signal generator and the floating gate drive . High operating voltage and no floating auxiliary supply is required on secondary side because of using the pulse transformer in order to supply energy.

Presently,computers mostly used in a control system. Because,the computer is high efficiency and convenience. Program writed to a computer in using replaceable complex circuits and can be easy to rectiify by solvecy at program.This project report is used computer to replace a old controller by interface between a external device and serial port of a computer. So circuit designed for interface process between a computer and a external devices and then program created to set function's work of a computer.It is satisfying controller.