Electronic Respirator: Traditional Chinese Circuit Design Guide
In short: Traditional Chinese Electronic respirator. This entry documents a circuit & prototype taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 2140 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
electronic respiratorFigure 75 is the circuit schematic diagram of the electronic respirator. To use the device, a negative electrode is placed on the patient's phrenic nerve; the other electrode is placed anywhere on the limb. Its basic pulse frequency is 40Hz, which is amplitude-modulated by an ultra-low-frequency sawtooth wave of 15 to 35 times/min. The modulation frequency is continuously adjustable. The output amplitude is 50mA and the wave width is 450μs. Its working process is the same as human breathing.Adults and children breathe at different speeds, and can be adjusted arbitrarily according to the situation to extend or shorten the time of exhalation and inhalation. …
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