Pulsed current acts on human tissue through the needle, which makes the ion concentration and distribution in the tissue change significantly, thus affecting the function of human tissue. The fast frequency of low-frequency pulse current is called dense wave (high frequency), which is generally 50- 100 times per second; Slow frequency is called wave thinning (low frequency), generally 2-5 times/second. Different waveforms and frequencies have different therapeutic effects, and appropriate waveforms should be selected according to the condition.
Normal use of pulse is harmless to human body, but beneficial to human body. Pulse can improve muscle mass and strength, which is mainly used in medicine, welding and so on.
Extended data:
When the pulse power supply discharges the driving coil, it will produce a pulse current of more than ten kiloamperes or even dozens of kiloamperes. The commonly used methods for measuring large current are shunt method, optical method, Hall effect method and Rogowski coil method. In recent years, researchers have explored new techniques for measuring pulsed high current, such as electro-optical method and magneto-optical method.
These methods have also been applied in practice. Their advantage is less interference to the tested object, but it greatly increases the complexity of the system, and the reliability of the test depends on the actual performance of the photoelectric system. They are generally used under special conditions and are still developing.
References:
Baidu encyclopedia-pulse current