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What are galvanic and faradic currents?


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Galvanic current:

A galvanic type current is defined as a lengthy duration, interrupted kind of direct current with pulse durations of 1ms or greater and a frequency of 30Hz.

Galvanic waveforms are of the below kinds:

  1. Rectangular surging; this waveform is produced whenever the current is quickly switched on and off.
  2. Trapezoidal surging; is a waveform with a sluggish rise and gradual fall.
  3. Triangular surging; is a waveform that steadily rises, plateaus, and eventually collapses.
  4. Saw tooth surging; is a waveform characterized by a steady rise followed by a sharp decrease in impulse.

Faradic current:

Faradic current is defined as a brief and discontinuous kind of direct current with pulse durations ranging from 0.1 to 1ms and frequencies extending from 50 to 100Hz.

Faradic waveforms are of the below kinds:

  1. Trapezoidal surging; is a waveform in which the impulse steadily develops, followed by a slow decline.
  2. Triangular surging; is a waveform in which the impulse generates a trapezoidal surging.
  3. Sawtooth surging; is a waveform characterized by a steady rise followed by a sharp decrease in impulse.

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