AudioArc is a visually appealing sound system. Our product uses plasma audio, a micro-controller, sensors, and an LCD panel to create a computer speaker that will look amazing

Team
  • Alekhya Gampa
  • Colin Haas
  • Katherine Scherr
  • Joe Zischkau
18-549 course home page

Modern computer speakers, while they may have fancy LEDs, are typically very boring to look at. Plasma Speakers will use plasma audio technology to create a sound system that looks like a bolt of lightning. In addition, existing plasma audio systems only exist in the "do-it-yourself" niche, and are not available for consumer purchase. We will produce an easily marketable product for all those who want a little flash with their sound.

Product Produces quality sound Safe Looks like lightning
Traditional Speakers Yes Yes No
DIY Plasma Speakers Yes No Yes
AudioArc Yes Yes Yes

AudioArc will be a cost-effective, safe, and consumer-ready product.

Hardware:
  • Dual load-balanced 200V 30A MOSFETs
  • ATMEGA328 microcontroller
  • SG3525AN modulator IC
  • 24V 4.5A AC/DC power supply
  • DIODE FAST 1000V 1A DO-41
  • DIODE ZENER 12V 500MW DO-35
  • MOSFET N-CH 200V 30A TO-247AC
  • IC MODULATOR REG PULSE 16 DIP
  • IC REG 1A POS VOLT 3TERM TO-220
  • RES 22 OHM CARBON FILM 1/4W 5%
  • RES 2.2K OHM 1/4W 5% CF MINI
  • POT 10K OHM 9MM SQ RTANG PLAST
  • CAP CER 0.1UF 50V RADIAL
  • CAP CER 3300PF 50V 10% RADIAL
  • CAP ALUM 2.2UF 50V 20% RADIAL
  • CAP ALUM 10000UF 35V 20% SNAP
  • CAP FILM 1UF 63VDC RADIAL
  • FERRITE TOROID 25.3MM OD
  • SILICON GREASE 4 GRAM
  • CONN JACK STEREO R/A 3PIN 3.5MM
  • ISOLATOR OPTICALLY COUPLED 125MA
  • THERMAL PAD TO-220 .009" SP400
  • POWER SUPPLY 24V 4.5A SGL OUTPUT
  • ARDUINO UNO BOARD REV3
  • HEATSINK TO-220 W/PINS BLK 2"
Software:
  • Custom software for controlling sensors
Schematics: click to view full image

  • Be able to connect any device using a headphone jack
  • Display audio statistics such as volume
  • Arc is enclosed for safety while remaining fully functional and providing good acoustics

  • Overheating: Use temperature sensors to monitor the speaker and regulate the arc
  • Voltage is too high: Use a voltmeter feedback loop to regulate the arc
  • Current is too high: Use an ammeter feedback loop to regulate the arc
  • Objects that touch the plasma arc burn: put the plasma arc in an enclosed structure to prevent physical access
  • Exploding components: order extra parts

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