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    AC Chopper firing circuit

    ac chopper plz if anyone have a practical wiring circuit to the firing circuit to the 2 back to back thyristor.(AC Chopper)
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    Optimization sol. of sys. of nonlinear trigonometric funct.

    trigonometric optimization Dear All, I'm working on an inverter and to eliminate harmonics in output voltage and current i have to optimize a solution of a system of nonlinear trigonometric functions and i don't know how, Newton-Raphson iteration method is too difficult with this...so I really...
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    iFIX 3.5 documentation request

    ifix 3.5 Dear All, I've just downloaded iFix 3.5 SCADA software but i'm new in this field.....has anyone any training materials or manuals for this system i can use to improve my knowledge about it. It's really urgent matter! Here's the links for download if anyone wants it: This Is the...
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    S7 communication Cable

    s5 communication cable ear All, I'm having a problem with communicating the S7-200 PLC with PC because i don't have the communication cable and it's still expensive for me to buy. Have anyone any schematic for this cable? Note: PLC communication port is RS232...I tried to use old S5 cable but...
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    S7-200 communication cable schematic

    schematic cable plc s7-200 Dear All, I'm having a problem with communicating the S7-200 PLC with PC because i don't have the communication cable and it's still expensive for me to buy. Have anyone any schematic for this cable? Note: PLC communication port is RS232...I tried to use old S5...
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    Help with 5 level Multi level inverter amplifier circuit

    irf540n circuit Dear All, I face a problem with the amplifier circuit of 5 level multi level inverter circuit. The main problem is summarized in that i need to drive number of MOSFETs (IRF540N) and I found that if i used an amplifier circuit will be good, but when i tried to drive the MOSFET i...
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    Need Help with PIC18F452 to write a program with C, assembly

    Need Help with PIC18F452 Dear All, Please help me to write a program with C or assembly for firing thyristors of Full wave Inverter. I have 4 thyristors (1, 2, 3 & 4) the main idea is to fire (drive) the gate of thyristors 1&3 at a specific time while 2&4 are off, and vice verse. Can you help...
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    Problem with Micro-controller

    Dear All, I'm going to make a power electronics multilevel inverter (DC --> AC inverter) based micro controller (PIC), and I'm a beginner in micro controller design and programming. Please if there is anyone can help me to understand it well and how to choose the best micro-controller to do the...
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    PLC trainging software for Beginners

    plc for beginners Dear All, I'm new here and I thought it'll be good to start with something useful i can share with you. Here's a link for Mitsubishi PLC training software, it's useful for PLC beginners. https://rapidshare.com/files/148111966/PLC_Training_software.rar.html Regards, Ahmed
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    Looking for materials about Multilevel Inverter

    Hi All, Please Help me with my project (Final year Engineering project) and it's about Multilevel Inverter (Theory and Application) Please if there is anyone know anything or have any e-books about the subject please help me.
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    Help, Controlling Water filter in T.W.Station using PLC

    Dear All, I need your help in my final year project. I thought of making a water filter in water treatment station using PLC but when i made a survey i found that the filed instruments are very expensive like pressure Tx. and level sensor that's number 1. 2 - I need to make a kit for it and i...

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