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piezo generator circuit

piezo generator circuit

The piezoelectric ultrasonic generator is the use of the piezoelectric crystal resonator to work. The internal structure of the ultrasonic generator shown in Figure 1, it has two piezoelectric substrate and a sounding board. Plus a pulse signal when its poles, its frequency is equal to the natural oscillation frequency of the piezoelectric, piezoelectric chip will occur resonance, and driven by the vibration of the sounding board, they produce ultrasonic. Conversely, if the applied voltage between two electrodes, when the sounding board receives the ultrasonic, the oppression of the piezoelectric vibration, mechanical energy is converted to electrical signals, then it becomes the ultrasonic receiver.

The piezo generator circuit incentives in two ways: one is he excited. The other is self-excited. If the type of the device according to the final amplifier tube is sub-divided into four types: tube-type ultrasonic generator; thyristor inverter type ultrasonic generator; transistor-type ultrasonic generator and the power module ultrasonic generator. Tube type with SCR inverter is basically obsolete, the current widespread use of transistors generator. Excited ultrasonic generator consists of two parts, the first level is the oscillator, the latter is the amplifier. Generally through the output transformer coupling the ultrasonic energy added to the transducer. The ultrasonic generator self-excited oscillation, power amplifier, output transformer and transducer set as one, forming a closed loop, the loop to meet the amplitude and phase feedback conditions to form an oscillator power amplifier. And resonance in the mechanical resonance frequency of the transducer.
piezo generator circuit
 

Type  Power(W) Frequency (KHz)
UCE—UG300W
 
300
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
UCE—UG500W
 
500
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
 
UCE—UG600W
 
600
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
 
UCE—UG900W
 
900
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
 
UCE—UG1000W
 
1000
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
 
UCE—UG1200W
 
1200
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
 
UCE—UG1500W
 
1500
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
 
UCE—UG1800W
 
1800
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
 
UCE—UG2000W
 
2000
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
 
UCE—UG2400W
 
2400
 
20khz,25khz,28khz,33khz,40khz
Frequency is adjustable
 
 
High Frequency
 
500W-1200W
 
65-80
 
High Frequency
 
500W-1200W
 
120-135
piezo generator circuit


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