Ac Theory

VOLTAGE TIME AC Waveform Terms:

VOLTAGE PEAK TIME Peak: Maximum Positive or Negative Voltage

VOLTAGE PEAK TO PEAK PEAK TIME Peak to Peak: 2 x peak value

VOLTAGE PEAK TO PEAK PERIOD PEAK TIME Period or Wavelength: length of one complete cycle

VOLTAGE PEAK TO PEAK PERIOD PEAK TIME RMS: (root mean square) Peak Value x .707 ( 1/  ) RMS

VOLTAGE TIME Calculations: If we have 230v RMS @ 50 Hz (NZ Supply) RMS 230v 50Hz

VOLTAGE TIME Calculations: If we have 230v RMS @ 50 Hz (NZ Supply) Peak = 230v / .707 = 325V RMS 230v 50Hz

VOLTAGE TIME Calculations: If we have 230v RMS @ 50 Hz (NZ Supply) Peak = 230v / .707 = 325V RMS 230v 50Hz 325v

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

VOLTAGE TIME Calculations: 50 Hz , means we have 50 cycles per second So 1 cycle = 1sec/ 50Hz = 20ms RMS 230v 50Hz 325v 20ms

VOLTAGE TIME Calculations: Instantaneous Value What is the value after 13ms? RMS 230v 50Hz 325v 20ms

VOLTAGE TIME Calculations: Instantaneous Value What is the value after 13ms? Convert ms to degrees, 20ms = 360deg RMS 230v 50Hz 325v 20ms

VOLTAGE TIME Calculations: Instantaneous Value What is the value after 13ms? Convert ms to degrees, 20ms = 360deg Therefore 1ms = 18deg RMS 230v 50Hz 325v 20ms

VOLTAGE TIME Calculations: Instantaneous Value What is the value after 13ms? Convert ms to degrees, 20ms = 360deg Therefore 1ms = 18deg Therefore 13ms = 13 x 18deg = 234deg RMS 230v 50Hz 325v 20ms

VOLTAGE TIME Calculations: Instantaneous Value What is the value at 234 deg RMS 230v 50Hz 325v 20ms 13ms

VOLTAGE TIME Calculations: Instantaneous Value What is the value at 234 deg V = sin 234 x peak RMS 230v 50Hz 325v 20ms 13ms

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

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

Ac Theory

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Ac Theory