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Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
Ac theory
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Ac theory

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  1. VOLTAGE TIME AC Waveform Terms:
  2. VOLTAGE PEAK TIME Peak: Maximum Positive or Negative Voltage
  3. VOLTAGE PEAK TO PEAK PEAK TIME Peak to Peak: 2 x peak value
  4. VOLTAGE PEAK TO PEAK PERIOD PEAK TIME Period or Wavelength: length of one complete cycle
  5. VOLTAGE PEAK TO PEAK PERIOD PEAK TIME RMS: (root mean square) Peak Value x .707 ( 1/  ) RMS
  6. VOLTAGE TIME Calculations: If we have 230v RMS @ 50 Hz (NZ Supply) RMS 230v 50Hz
  7. VOLTAGE TIME Calculations: If we have 230v RMS @ 50 Hz (NZ Supply) Peak = 230v / .707 = 325V RMS 230v 50Hz
  8. VOLTAGE TIME Calculations: If we have 230v RMS @ 50 Hz (NZ Supply) Peak = 230v / .707 = 325V RMS 230v 50Hz 325v
  9. VOLTAGE TIME Calculations: If we have 230v RMS @ 50 Hz (NZ Supply) Peak = 230v / .707 = 325V Peak to Peak = 325v + 325v = 650v RMS 230v 50Hz 325v
  10. VOLTAGE TIME Calculations: 50 Hz , means we have 50 cycles per second So 1 cycle = 1sec/ 50Hz = 20ms RMS 230v 50Hz 325v 20ms
  11. VOLTAGE TIME Calculations: Instantaneous Value What is the value after 13ms? RMS 230v 50Hz 325v 20ms
  12. VOLTAGE TIME <ul><li>Calculations: Instantaneous Value </li></ul><ul><li>What is the value after 13ms? </li></ul><ul><li>Convert ms to degrees, 20ms = 360deg </li></ul>RMS 230v 50Hz 325v 20ms
  13. VOLTAGE TIME <ul><li>Calculations: Instantaneous Value </li></ul><ul><li>What is the value after 13ms? </li></ul><ul><li>Convert ms to degrees, 20ms = 360deg </li></ul><ul><li>Therefore 1ms = 18deg </li></ul>RMS 230v 50Hz 325v 20ms
  14. VOLTAGE TIME <ul><li>Calculations: Instantaneous Value </li></ul><ul><li>What is the value after 13ms? </li></ul><ul><li>Convert ms to degrees, 20ms = 360deg </li></ul><ul><li>Therefore 1ms = 18deg </li></ul><ul><li>Therefore 13ms = 13 x 18deg = 234deg </li></ul>RMS 230v 50Hz 325v 20ms
  15. VOLTAGE TIME Calculations: Instantaneous Value What is the value at 234 deg RMS 230v 50Hz 325v 20ms 13ms
  16. VOLTAGE TIME Calculations: Instantaneous Value What is the value at 234 deg V = sin 234 x peak RMS 230v 50Hz 325v 20ms 13ms
  17. VOLTAGE TIME Calculations: Instantaneous Value What is the value at 234 deg V = sin 234 x peak V = - .809 x 325v RMS 230v 50Hz 325v 20ms 13ms
  18. VOLTAGE TIME Calculations: Instantaneous Value What is the value at 234 deg V = sin 234 x peak V = - .809 x 325v V = - 262v RMS 230v 50Hz 325v 20ms 13ms -262V

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