What is Ultrasonic Generator?

Jul 04, 2024

Ultrasonic Power Supply:

Ultrasonic power supply is an electrical device that converts a standard input voltage of 50 Hz or 60 Hz into a high-frequency output voltage, which is suitable for driving the high-frequency output voltage of ultrasonic transducers. Adjust the amplitude and waveform of the output voltage to meet the requirements of ultrasound. Adjust the amplitude and waveform of the output voltage to meet the requirements of ultrasound.

Feedback mechanism:

The ultrasonic power supply has feedback nodes, which mainly provide feedback signals in two aspects. 1. Output power signal, 2. Frequency tracking signal.

Output power signal:

When the voltage of the ultrasonic power supply changes, the output power also changes, which makes the mechanical vibration of the ultrasonic transducer unstable. Therefore, the power feedback signal is used to adjust the amplifier to stabilize the output power.

Frequency tracking signal:

The transducer operates most effectively and stably at the resonant frequency. The resonant frequency of the transducer may change due to assembly or aging during operation. If the frequency change is not significant, the frequency tracking signal can control the signal generator to maintain its frequency within a certain range of the resonant frequency of the transducer, thereby making the power supply work in the optimal state.

The advantages of power supply:

Locked main resonance: Once the device completes its initial setup, it can operate continuously without the need to adjust the power supply.

Automatic amplitude control: When the load of the transducer changes during operation, the driving characteristics can be automatically adjusted to ensure that the blade obtains a stable amplitude.

Amplitude adjustment: The amplitude can be increased or decreased instantly during the working process, with a setting range of 0% to 100%.

System protection: It can include protection against ground faults, power overload, overvoltage, overcurrent, high ceramic temperature, and frequency jumps.

Overheat protection: It can effectively protect the power supply from damage.

Nowadays, ultrasonic power supply has been widely used in below field.

Ultrasonic welding equipment