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Low Voltage Power Amplifier

Low Voltage Power Amplifier. Team Members. Toro Adebiyi Team Leader. Brian Wells. Dr. Mark Halpin Advisor. Chuck Shue. Scott Wiggins. Power Quality is defined as conditions that accompany power transmission, generation & production. Motivation.

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Low Voltage Power Amplifier

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  1. Low Voltage Power Amplifier

  2. Team Members Toro Adebiyi Team Leader Brian Wells Dr. Mark Halpin Advisor Chuck Shue Scott Wiggins

  3. Power Quality is defined as conditions that accompany power transmission, generation & production Motivation • A lot of electronic equipment is lost due to Power Quality problems • Power Quality problems can not be completely eliminated • Typical Power Quality problems are Voltage spikes, Voltage sags, Outages and Power surges

  4. Motivation • Test equipment will be designed to simulate Power Quality problems • Design can help electronic equipment manufacturers test products under various power conditions • Design can help manufacturers re-design their products to guard against loss of products due to Power Quality problems

  5. Design Implementation &Diagram Computer with A Digital to Analog Converter Low Voltage Amplifier Electronic Equipment to be tested

  6. Key Design Specifications • 1. Input Signal: • 5Vac 2mA from an Encore Electronics pyramid 1 DAC • 2. Output Signal: • 120Vac 10A • 3. Efficiency: • Choice of components . Heat sink, fan • 4. Solid-state vs. Vacuum tubes: • Both have trade offs • 5. Signal Quality: • Nature of output signal

  7. Key Design Specifications • 6. Safety & Short Circuit Protection: • We intend on using optical isolators and diodes to protect our design • 7. Size & Packaging: • Compact design - 6” X 8” X 3”

  8. Key Design Specifications • 8. Cost: • Based on the parts we will be using our • Amplifier will cost $100.00

  9. Key Design Specifications • 9. Harmonic Distortion: • This is a characteristic of amplifiers that we expect. • 10. Self test & Maintenance: • We plan on using LEDs to build function and status indicators

  10. Why Solid-state? • Based on our research the two approaches to this design is either using solid-state electronics or Vacuum tubes • We have chosen to use Mosfets for these reasons: • Vacuum tubes are very expensive compared to Mosfets. • Vacuum tubes require more power for operation: • Vacuum tubes require a warm-up time before producing useful output • Vacuum tubes are sensitive to shock and vibrations • Vacuum tubes are bulky

  11. More reasons……. • Vacuum tubes produce a lot of heat • Vacuum tubes require higher voltages for operation and this usually means more expensive capacitors • Although Solid-state electronics have their disadvantages, from a price stand point we would rather use Solid-state devices (Mosfets)

  12. Sample Amplifier Schematic

  13. Input/Output Waveforms

  14. Test Plan • We plan on testing our design and it’s functionality using the facilities available to us in the electronics lab • Our primary test concern is to verify that our circuit amplifies the input voltage • After the amplifier has been built all we need to do is examine the output and input signals using an oscilloscope • We also intend on building a circuit that checks the operation and status of our amplifier.

  15. What we will demonstrate at the end of this Semester? Build an interface that connects our amplifier to any test equipment • Producing a very good quality of our output signal • A working prototype of our amplifier which can • amplify a 5V 2mA source to 60V

  16. Acknowledgements We would like to thank our advisor, Dr. Mark Halpin, for his time, patience and contribution to this project. We also extend thanks to Dr. Joe Picone, for his continuing input.

  17. Low Voltage Power Amplifier

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