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Electrical Engineering in the Semiconductor Equipment Industry

Electrical Engineering in the Semiconductor Equipment Industry. A Look at a Typical Job Description of an Equipment Electrical Engineer Recent Job Description…. Bob Garbarino 19-NOV-2003. Review Customer Specifications and Generate Design Concepts.

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Electrical Engineering in the Semiconductor Equipment Industry

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  1. Electrical Engineering in the Semiconductor Equipment Industry A Look at a Typical Job Description of an Equipment Electrical Engineer Recent Job Description…. Bob Garbarino 19-NOV-2003

  2. Review Customer Specifications and Generate Design Concepts • Each customer has their own internal specifications • Requirements often difficult to interpret • Sometimes visit customers or conference calls • Concepts communicated by written document, block diagram, schematic, theory of operation • Cost and labor estimates

  3. Design to SEMI SpecificationsWhat are These? • Created by members of SEMI committees • Goal: create standardization in semiconductor industry • EEs mostly deal with SEMI S2--Safety • NFPA--Fire Risk • Hazard Analysis • Interlocks • SEMI F47—Voltage sag • CE • Low Voltage Directive • EMC Directive

  4. Specify Components • Most parts on system are third-party supplied • Search catalogs, existing standard vendor parts in database • Parts are put into an assembly • Check list for selecting a part • Track record of reliability • Cost • UL Listed/Recognized • Standard part • Meets electrical requirement for application

  5. Examples of Common Electrical Components • Relays, Contactors • Circuit breakers • Transformers • Wire, cable, connectors • Controllers • Temperature, flow, pressure, Digital/Analog I/O • Transducers, thermocouples • Safety interlock controllers (PLCs) • Signal towers • Uninterruptible power supplies • Motors

  6. Document Designs • Why? • Life is not all fun! • The system must be manufactured by others • Service/troubleshooting • AutoCad or OrCad Schematics • Bills of Materials • Assembly Drawings • Product Manuals

  7. Work Effectively With Others • Sounds trivial, but this it is critical to get your job done • It also helps when the layoffs come • Need to interface with: • Purchasing, planning • Manufacturing • Final test • Fellow engineers • Your boss

  8. Skills to Enhance Effectiveness • AutoCAD, OrCAD • Analog and digital design experience and knowledge of, MS Office • Oracle data base software skills for creation of BOMs • Ability to comprehend and execute toverbal and/or written instructions • BS degree required and minimum of 3 years electrical design experience

  9. Some Examples of EE Designs • Cables and wiring harnesses--lots of them! • Power distribution panels • Electronics enclosures • Temperature, flow, pressure control • Robotics control assemblies • Light curtains • Operator interface • Need to have good overall system understanding to merge this all together and make it work!

  10. Hardware Example • Programmable Logic Controller • Industrial I/O Controller • Modular • Computerized • Pushbutton Input • Thermocouple Input • Analog Output • Valve Control Board-Outputs • Terminal Block

  11. PLC Program Operation • PLC Program reads the TC temperature in Channel 1. Converts the signal to display the Temperature in F (degrees Fahrenheit) on Mod 4 A1-A8. Where A5-A8 displays the 1’s value in binary, and A1-A4 displays the 10’s value in binary. (e.g. 0111 0010 = 72 F). • PLC Program reads the Reset Switch on Mod 5 A1. When true, the program will close the first SPDT relay on Mod 6 A1. This in-turn will close the second relay in the series. • PLC Program reads the Reset Switch on Mod 5 A1. When false Mod 4 C1-C3 is turned on. When true, Mod 4 C5-C7 is turned on. • PLC Program reads the Reset Switch on Mod 5 A1. When the PLC Program senses the one-shot signal (positive transition), 1.25 volts is added to the setpoint of the analog output on Mod 8 Channel 1. If the setpoint is greater than 10 volts, the PLC program will reset the setpoint to 0, before sending out the new setpoint.

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