Traditional Chinese Practical Ultrasonic Atomizing Humidifier: Circuit Design, Parts List & Workshop Prototype Guide
In short: Traditional Chinese Practical Ultrasonic Atomizing Humidifier: Circuit Design, Parts List & Workshop Prototype Guide. 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 4875 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
Ultrasonic atomizing humidifierUltrasonic atomizing humidifiers are widely used in households, and are especially suitable for humidification when indoor dryness occurs in northern my country in winter. If you add some perfume to the humidifier fluid, you can make the room smell fragrant. In addition, it can also be used for oxygen humidification and drug treatment at home or in the ward. When used for drug treatment, under the action of ultrasonic waves, the drug fluid forms mist particles with a diameter of 0.5 to 10 μm. The patient can inhale the drug into the affected part of the respiratory tract by taking a deep breath and treat it with a high concentration of the drug. This has certain effects on the treatment of respiratory diseases such as chronic bronchitis, asthma and pneumonia.The circuit principle is shown in Figure 199. It consists of the following three parts: (1) rectifier circuit; (2) capacitor three-point oscillation circuit; (3) water level detection and protection circuit.Figure 199(1) Rectifier circuit: Transformer T in the figure steps down the 220V AC power to 50V. After rectification by VD1~VD4, it outputs a pulsation value of about 60V to power the ultrasonic oscillation and ultrasonic output circuit. The power indicator light uses a light-emitting diode, and R1 is the current-limiting resistor of the diode.(2) Oscillation circuit: VT1 is a high-frequency transistor power transistor D1163A, and the ultrasonic piezoelectric transducer and C2, C3, C4, C5, L1, L2, R3, R4, R6, R7, R8 and other components form a capacitive three-point oscillation circuit. …
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