Waveforms of Therapeutic Currents
Waveforms of Therapeutic Currents[edit | edit source]
Therapeutic currents are, special electric currents that are applied to human body for healing the body. Generaly these are defined by using voltage-time chart of the current which can be seen in the osiloscope screen. In this page I will summaries the waveform of common therapeutic curents. For details I will refer my book (free e-book) on this topic.
Fundamental Terms[edit | edit source]
What is an Ossiloscope ?[edit | edit source]
An ossiloscope is an instrument which is used to observe voltage changes during time in electric circuits.
What is a Signal Generator ?[edit | edit source]
A signal generator is an instrument which generates electircal signals at given waveform, frequency and amplitude.
An electrotheraphy equipment is a kind of signal generator which generates therapeutic signal waveforms in safe frequency and amplitude.
What is Frequency ?[edit | edit source]
Frequency is a term which describes how many times a waveform repeat it self per second by signal generator.
A 100 Hz Sine Wave[edit | edit source]
A 500 Hz Sine Wave[edit | edit source]
A 1000 Hz Sine Wave[edit | edit source]
Amplitude of a Waveform[edit | edit source]
What is Peak Amplitude ?[edit | edit source]
The term peak amplitude defines the highest positive or negative value of a waveform. In terapeutic currents peak amplitude generally defines the highest value of the voltage during time.
What is Peak to Peak Amplitude ?[edit | edit source]
The term peak to peak amplitude defines the amplitude between the highest negative to highest positve value.
Peak to peak amplitude of a sine wave is equal to two times peak value of a sine wave.
What is Mean Amplitude ?[edit | edit source]
The term mean amplitude defines mean value of a waveform.
In terapeutic currents mean amplitude is a quantity in terms of voltage.
Peak amplitude of a sine wave has different mean amplitute value.
Mean amplitute of a sine wave is equal to 0.637 x Peak Amplitude.
Peak and Mean Amplitude of 100 Hz and 1 Volt Sine Wave[edit | edit source]
Peak and Mean Amplitude of 1000 Hz (1KHz) and 10 Volt Sine Wave
Peak and Mean Amplitude of 1000 Hz (1KHz) and 20 Volt Sine Wave
Square Waveform[edit | edit source]
Square waform is a common terapeutic waveform. Interrupted galvanic current and TENS are forms of Square waform.
Main parameter of a squarewaform is duty cycle. It defines the time ratio when voltage is higher or lower then zero and when voltage is equvalent to zero.