20khz high power ultrasonic power supply for ultrasonic welding machine

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Ultrasonic power supply is the key point for the whole ultrasonic system. Actually,the value of ultrasonic power supplies accounts for 80% of ultrasonic welding systems. Why power is so important in ultrasonic welding systems. The quality of the ultrasonic power supply directly determines the operating stability, welding speed and welding effect of the entire welding system, so the ultrasonic power supply is very important.

Ultrasonic generator, usually called ultrasonic power supply. Its function is to convert our mains (220V 110V or 380V, 50 or 60Hz) into a high frequency AC signal that matches the ultrasonic transducer. From the form of the amplifying circuit, a linear amplifying circuit and a switching power supply circuit can be used, and the high-power ultrasonic power source generally adopts a circuit form of a switching power supply in terms of conversion efficiency. Linear power supplies also have their own application range, which has the advantage that the circuit can be not strictly required.

Matching allows the operating frequency to change continuously and continuously. From the current situation in the ultrasound industry, ultrasonic generators are mainly divided into self-excited and separate excited power supply.

The principle of the ultrasonic generator is to first generate a signal of a specific frequency by a signal generator, which may be a sinusoidal signal or a pulse signal. This specific frequency is the frequency of the transducer, and is generally applied to ultrasonic in an ultrasonic device. The frequency is 20KHz, 25KHz, 28KHz, 33KHz, 40KHz, 60KHz,70khz, 100KHz.

Advantage :

• Trigger by Power patented feature provides the ability to accurately start the weld process once a programmed force is achieved. Combined with Weld by Energy, this unit delivers the highest level of process repeatability of any probe system available today.
• Time, energy ,depth , Multiple combined welding weld modes.
• Amplitude adjustment in 1% increments from 90% to 10%.
• Eight programmable setups.
• Power bar graph with last cycle memory.
• High-resolution multicolor LCD with a multilingual menu for quick, easy programming.
• Real time in cycle menu displays frequency, power, and time.
• 100% digital controls of all power supply functions and parameters.
• Digi-Trac tuning automatically tracks the resonant frequency digitally. It adjusts the output frequency to match the acoustic stack. This is done for every weld cycle and eliminates the need to manually tune the generator.
• Ultrasonic overload protection, with fault indication for ease of troubleshooting. The overload power limit is based on true RMS power output level.
• Patented pulse-width modulation design delivers power more efficiently with substantially less stress on electrical components for superior performance, reliability, and extended life