Low Voltage Power Amplifier

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Low Voltage Power Amplifier
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Team Members
Toro Adebiyi Team Leader
Brian Wells
Dr. Mark Halpin Advisor
Chuck Shue
Scott Wiggins
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Motivation

• Power Quality is defined as conditions that
  accompany power transmission, generation
  production

• 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

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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

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Design Implementation Diagram
Computer with A Digital to Analog Converter
Low Voltage Amplifier
Electronic Equipment to be tested
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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
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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
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Key Design Specifications
8. Cost
Based on the parts we will be using our
Amplifier will cost 100.00
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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
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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
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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)
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Sample Amplifier Schematic
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Input/Output Waveforms
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Test Plan
We plan on testing our design and its
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.
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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
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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.

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Low Voltage Power Amplifier