20Khz Ultrasonic Electric Digital Driver for Welding Amplitude
Transducer and Booster
Description:
Ultrasonic power sources are often referred to as ultrasonic
sources, ultrasonic generators, and ultrasonic electronics boxes.
It is a major component of high power ultrasound systems. Its
function is to generate a high-power high-frequency AC signal to
drive the ultrasonic transducer to work. The high-quality driving
power supply must ensure the stable and safe operation of the
high-power ultrasonic system. At the same time, it must monitor the
operating frequency, load power, capacitive reactance, impedance
and other parameters of the transducer in real time, and can carry
out power according to different needs of users. Adjustment of
parameters such as amplitude and operation mode.
working principle:
An ultrasonic power source, also known as an ultrasonic generator,
is a device for generating and providing ultrasonic energy to an
ultrasonic transducer. Its purpose is to convert our mains (220V or
380V, 50Hz or 60Hz) into a high-frequency AC signal that can be
matched with an ultrasonic transducer. This signal can be either a
sinusoidal signal or a pulsed signal.
In the design of the ultrasonic power source, the matching design
of the generator and the transducer is very important. The design
of the intelligent ultrasonic generator largely determines whether
the ultrasonic device can work normally and efficiently. The
matching of the ultrasonic episode to the transducer includes two
aspects: impedance matching and tuning matching. Impedance matching
transforms the impedance of the transducer into an optimal load,
ie, an impedance transformation. Tuning matching allows the voltage
and current across the transducer to be in phase, resulting in the
highest efficiency, while series resonance improves the voltage
across the transducer, which is beneficial for piezoelectric
transducers.
Specifications:
| Item No | QR-WD20W |
| Power | 2000W |
| Generator | Digital generator |
| Frequency | 20KHZ |
| Voltage | 220V or 110V |
| Size | 300*450*170mm |
| Application | Plastic Welding Machine |
| Net weight | 7Kg |
Common faults of the ultrasonic generator are as follows:
1. Without ultrasound, the power switch indicator is not displayed,
and the fan is running normally.
1) Check if the rectifier bridge is damaged. The method is as
follows: the pointer multimeter is adjusted to the ×10K block, the
black meter pen is connected to the positive pole of the rectifier
bridge, and the red test pen is respectively connected to the AC
terminal, whether the two pins are turned on, and then the
rectifier bridge is replaced, otherwise the next step is checked.
2) Check if the main capacitor is damaged. If yes, replace the
capacitor.
3) Check if the power tube is damaged. The method is as follows:
the pointer multimeter is adjusted to the ×10K block, the black pen
is connected to the 2 pin of the power tube, and the red test pen
is connected to the 1st and 3rd pins respectively, and the power
tube is replaced, otherwise the state is restored.
2. Without ultrasound, the power switch indicator does not light,
and the fan does not turn.
1) Check if the power switch is damaged. If yes, replace the power
switch, otherwise check the next step.
2) Check if the fan is damaged. If yes, replace the fan.
3. Without ultrasound, the power switch indicator lights up and the
fan is running normally.
1) Remove the output cable, turn on the power, adjust the power to
the maximum, use the multimeter to exchange 1000V, measure the
voltage at the output, usually about 1000V. If there is voltage,
the generator is ok, plug in the output cable, check the step, if
there is no voltage, check the next step.
2) Use the multimeter DC 1000V file to measure the positive or
negative output of the main capacitor or rectifier bridge.
20Khz Ultrasonic Electric Digital Driver for Welding Amplitude
Transducer and Booster
