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  1. 1. 9 VOLTS OF PAIN!(MARX GENERATOR)AlvinTungCeasar Hurtado
  2. 2. What is a Marx Generator? Voltage Multiplier Cockroft-Walton generator-ConstantVDC Stage Multiplier High PulseVoltageRelevant Equations:V(out) = n(Vin)Where n is the number ofstages
  3. 3. Applications Ignitions HighVoltage InsulationTest Large Scale Generatorsare used in theAerospace Industry toexamine whatLightning pulses do toouter skin of Jet Aircraftand Passenger Planes. Building somethingdangerous due tooverall boredom.
  4. 4. Supplies-1 Ballast Resister (pulsetimer) = 6.8MΩ (2 Watt)-30 1MΩ (0.5Watt)Resistors-16 1nF (3,000 volt)Capacitors-1 $7 Electric FlyswatterfromWalmart (2.75kV)-1 9V DC Battery (Duracellis a good brand)-Alligator Clips-Patience
  5. 5. Problems We had trouble withfinding an appropriatehigh-voltage powersupply There was a pointwhere only about halfthe stages would spark
  6. 6. Solutions Instead of attempting the highvoltage transformer, we used ahigh voltage, low currenttransformer from a fly swatter When we couldn’t get sparksall throughout the generator,we tried tweaking the sparkgaps, replacing components,etc. Replacing the battery did thetrick!
  7. 7. Expectations We wanted a 1 cm spark (roughly 30 kV) We wanted our experimental value to beconsistent with the theoretical value We wanted all spark gaps in every stage tolight up
  8. 8. Results Our transformer output was measured at 1,780V At 16 stages, we achieved 1 cm of sparks 16 stages X 1,780V = 28,480V The experimental result was well withintheoretical bounds (30,000V)
  9. 9. DEMO!

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