Medical ultrasonic atomizer 3

The medical ultrasonic atomizer circuit consists of a power supply circuit, a low side liquid level protection control circuit, an ultrasonic oscillator, and a fan drive circuit, as depicted in figure 9-112. The power supply circuit includes a power supply switch (S), a resistor (R1), a power supply indication LED (VL), a fuse (FU), and a power transformer (T), along with bridge rectifiers (UR) and a filter capacitor (C1). The low side liquid level protection control circuit is composed of liquid level detection electrodes (a, b), resistors (R2-R4), a potentiometer (RP1), a capacitor (C2), and a transistor (V1).

The medical ultrasonic atomizer circuit operates by converting electrical energy into ultrasonic waves, which are then used to atomize liquid into a fine mist suitable for medicinal applications. The power supply circuit is critical for providing the necessary voltage and current to the entire system, ensuring reliable operation. The inclusion of a power supply switch (S) allows for easy control of the device, while the LED (VL) serves as an indicator for power status. The fuse (FU) provides protection against overcurrent conditions, safeguarding the circuit from potential damage.

The ultrasonic oscillator is responsible for generating high-frequency signals that drive the transducer, which in turn creates the ultrasonic waves. This component is essential for the atomization process, as it determines the frequency and intensity of the ultrasonic waves produced.

The low side liquid level protection control circuit is a safety feature designed to prevent the device from operating when the liquid level is too low, which could lead to overheating and damage. The liquid level detection electrodes (a, b) monitor the liquid level in the reservoir. When the liquid level drops below a certain threshold, the circuit activates, cutting off power to the ultrasonic oscillator and fan drive circuit. Resistors (R2-R4) and potentiometer (RP1) are used to set the sensitivity of the level detection, while capacitor (C2) helps in stabilizing the circuit's response. The transistor (V1) acts as a switch that controls the flow of current based on the liquid level detected.

The fan drive circuit works in conjunction with the ultrasonic oscillator to disperse the atomized liquid effectively. It ensures that the mist produced is adequately distributed in the intended environment, enhancing the overall efficacy of the atomization process.

Overall, the design of the medical ultrasonic atomizer circuit emphasizes safety, efficiency, and functionality, making it suitable for various medical applications where precise atomization of liquids is required.The medical ultrasonic atomizer circuit is composed of power supply circuit, on the low side of liquid level protection control circuit, ultrasonic oscillator and fan drive circuit, it is shown in the figure 9-112. The power supply circuit is made of power supply switch S, resistor R1, power supply indication LED VL, fuse FU, power transformer T,

bridge rectifiers UR and filter capacitor C1. The low side of liquid level protection control circuit consists of liquid level detection electrodes a, b, resistors R2-R4, potentiometer RP1, potentiometer C2 and transistor V1. 🔗 External reference