Waveforms of Therapeutic Currents: Difference between revisions
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An electrotheraphy equipment is a kind of signal generator which generates therapeutic signal waveforms in safe frequency and amplitude.[[File:001.png|none|thumb|Figure 1: Ossiloscope and signal generator]] | An electrotheraphy equipment is a kind of signal generator which generates therapeutic signal waveforms in safe frequency and amplitude.[[File:001.png|none|thumb|Figure 1: Ossiloscope and signal generator]] | ||
=== What is Frequency ? === | |||
Frequency is a term which describes how many times a waveform repeat it self per second by signal generator. | |||
[[ | ==== A 100 Hz Sine Wave ==== | ||
{| class="wikitable" | |||
![[File:002.png|none|thumb|Figure 2: Signal generator settings for sine wave at 100 Hz frequency and 1V peak amplitude.]] | |||
![[File:004.png|none|thumb|Figure 3: Ossiloscope screen shot for sine wave at 100 Hz frequency and 1V peak amplitude.]] | |||
|} | |||
==== A 500 Hz Sine Wave ==== | |||
{| class="wikitable" | |||
![[File:Electro altlas figure 4.png|thumb|Figure 4: Signal generator settings for sine wave at 500 Hz frequency and 1V peak amplitude]] | |||
![[File:Electro atlas figure 5.png|thumb|Figure 5: Ossiloscope screen shot for sine wave at 500 Hz frequency and 1V peak voltage amplitude.]] | |||
|} | |||
==== A 1000 Hz Sine Wave ==== | |||
{| class="wikitable" | |||
![[File:Electroterapi atlasi figure 6.png|thumb|Figure 6: Signal generator site for sine wave at 1000 Hz frequency and 1V peak amplitude]] | |||
![[File:Electroterapi atlasi figure 7.png|thumb|Figure 7: Ossiloscope screen shot for sine wave at 1000 Hz frequency and 1V peak voltage amplitude.]] | |||
|} | |||
== Amplitude of a Waveform == | |||
=== What is Peak Amplitude ? === | |||
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 ? === | |||
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 ? === | |||
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 ==== | |||
{| class="wikitable" | |||
![[File:Electroterapi atlasi image 8.png|thumb|Figure 8: Signal generator parameters for a sine wave at 100 Hz and 1V.]] | |||
![[File:Electroterapi atlasi figure 9.png|thumb|Figure 9: Ossiloscope screen shot for peak and mean amplitudes of a 100 Hz 1 Volt sine wave.]] | |||
|} | |||
Peak and Mean Amplitude of 1000 Hz (1KHz) and 10 Volt Sine Wave | |||
{| class="wikitable" | |||
![[File:Electroterapi atlasi image 10.png|thumb|Figure 10: Signal generator parameters for a sine wave at 100 Hz and 10 V.]] | |||
![[File:Electroterapi atlasi image 11.png|thumb|Figure 11: Ossiloscope screen shot for peak and mean amplitute of a 100 Hz, 10V sine wave.]] | |||
|} | |||
Peak and Mean Amplitude of 1000 Hz (1KHz) and 20 Volt Sine Wave | |||
{| class="wikitable" | |||
![[File:Electroterapi atlasi figure 12.png|thumb|Figure 12: Signal generator parameters for Peak and mean amplitude of a sine wave at 100 Hz and 20V.]] | |||
![[File:Electroterapi atlasi figure 13.png|thumb|Figure 13: Ossiloscope screen shot for peak and mean amplitute of a 100 Hz, 20V sine wave.]] | |||
|} | |||
=== Square Waveform === | |||
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. | |||
==== 50% Duty Cycle Square Waveform ==== | |||
{| class="wikitable" | |||
![[File:Electroterapi atlasi image 14.png|thumb|Figure 14: Signal genrator settings for 10 V, %50 duty cycle, square waveform]] | |||
![[File:Electroterapi atlasi figure 15.png|thumb|Figure 15: Ossiloscope screen shot for 10 V, 50% duty cycle, square wave]] | |||
|} | |||
==== 20% Duty Cycle Square Waveform ==== | |||
{| class="wikitable" | |||
![[File:Electroterapi atlasi figure 16.png|thumb|Figure:16 Signal generator settings for 10 V, 20% duty cycle, square waveform]] | |||
![[File:Electroterapi atlasi figure 17.png|thumb|Figure 17:Ossiloscope screen shot for 10 V, 20% duty cycle, square wave]] | |||
|} | |||
Revision as of 11:26, 18 October 2017
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.
