The basic principle of electronic pulse massager is to stimulate muscles (nerves) with modulated medium and low frequency pulse current, so as to make muscles contract and relax periodically, and achieve the effect similar to massage.
Its technology is also very simple, that is, several modulation pulses are synthesized by a single chip microcomputer, and then the low-frequency carrier wave is modulated and amplified and output to a rubber electrode attached to the skin. For portable low-frequency massager, the modulation pulse period is about 0. From a few seconds to a few seconds, the waveform is a square wave, a triangular wave, a trapezoidal wave or a more complex waveform, and the fundamental wave is generally a square wave with frequencies ranging from several hundred to 1 kHz. The fundamental frequency of intermediate frequency therapeutic instrument used in hospital or clinic is between 1K ~ 10K Hz. The hospital also has a large-scale high-frequency therapeutic instrument, which I have never tried. By synthesizing modulated pulses with different waveforms, including changing the pulse width and the shape of the front and back edges, different action effects can be simulated, such as acupuncture, massage, flapping, pressing, vibration and so on.
The effects of acupuncture, cupping, scrapping, massage, beating and massage are simulated in different sequences by using low-frequency pulse signals generated by microcomputer control, and health care physiotherapy is carried out.