Ultrasonic generator is a device that converts mains electricity into high-frequency alternating current corresponding to the transducer to drive the transducer to work. It is an important component of high-power ultrasonic systems and can also be referred to as an electronic box, ultrasonic driving power supply, or ultrasonic controller. Although the ultrasonic generator can also be referred to as an ultrasonic driving power supply, in reality, the ultrasonic generator is only a part of the ultrasonic driving power supply. Ultrasonic power supplies can be divided into self-excited and self excited types according to different excitation methods, and ultrasonic generators refer to self excited ultrasonic power supplies. Due to the fact that the output power of the self excited oscillation circuit is more than 10% higher than that of the self-excited type, most ultrasonic generators are currently used as driving power supplies.

Ultrasonic transducer with overclocking is actually a piezoelectric ceramic with the same frequency as its resonant frequency, which utilizes the piezoelectric effect of the material to convert electrical energy into mechanical vibration. In general, ultrasonic waves are first generated by an ultrasonic generator, converted into mechanical vibrations by an ultrasonic transducer, and then generated by an ultrasonic wave output device and an ultrasonic wave receiving device.

Working principle

The Ningbo Luoshang ultrasonic equipment consists of a generator and a transducer. The generator, also known as the ultrasonic power supply, provides stable and intelligent high-frequency and high-voltage electrical energy to the ultrasonic transducer. Then, the high-frequency and high-voltage electrical energy drives the transducer to convert it into high-frequency mechanical energy and transmit it to the experimental screening instrument. And the energy output mode can be controlled through the operation panel to achieve different ultrasonic energy output requirements. The working modes of the Jingxin ultrasonic generator are divided into three types: continuous, pulse, and gap. The power output intensity is divided into five types: 60%, 70%, 80%, 90%, and 100%. Shanghai Jingxin Ultrasonic has 15 working modes, and the appropriate working mode is selected according to the characteristics of different materials to achieve the optimal screening efficiency.

Characteristics of ultrasonic generator and transducer

In addition to adjusting the output power to stabilize it and adjusting the frequency to keep the transducer working at its optimal state, the ultrasonic generator can also monitor the power and operating frequency of high-power ultrasonic systems. It can automatically follow the frequency by setting parameters, control the amplitude to remain stable when the load changes, and issue alarms to protect system equipment in case of adverse conditions.

There are two main types of transducer materials for ultrasonic transducers: magnetostrictive transducer materials and piezoelectric transducer materials. Stacking sheet shaped ferromagnetic materials into rods or tubes and placing them in a field with a direction along the axis of the rod. When the entry direction changes, the length of the rod also changes. This physical phenomenon is called magnetostriction effect, and ferromagnetic or alloy materials with magnetostriction effect are called magnetostrictive transducer materials

Automatic frequency tracking: Automatically tracks the resonant frequency of the transducer;

Adjustable mode: Select the corresponding vibration mode for different materials;

Continuous: Suitable for low mesh, high-density powders.

Pulse: Suitable for high mesh, low density powders.

Gap: Suitable for materials with high mesh count and easy aggregation.

Adjustable amplitude: There are five adjustable amplitude levels, and the corresponding amplitude can be selected based on the specific gravity, particle size, and structural characteristics of the material to achieve efficient screening efficiency.

Overload protection: In case of abnormal situations, the system automatically shuts down for protection, safeguarding important components from damage.

Cooling system: The device is designed with an air cooling system to ensure stable operation in overheated environments.

Sealing design: The system focuses on sealing design to ensure that dust does not enter the interior in harsh environments and to prevent flammable and explosive situations from occurring.

Technical parameters of transducer(Click for details of transducer products)here）

model	Frequency (KHZ)	Resonant impedance (Ω)	Capacitor (PF)	Output power (W)
DHSF-E2 (High Frequency)	35.5	≤ 10 Ω	2000 ± 10%	40-120
DHSF-E1 (low frequency)	28	≤ 15Ω	4000 ± 10%	30-60

Application scope

Agriculture, soil, coal, synthetic materials, chemicals, geology, metallurgy, building materials, environment, resources, glass, ceramics, biology, etc

lLaboratories in industries such as pharmaceuticals, metallurgy, chemical engineering, mineral processing, and food

precautions