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  Piezoelectric ceramic transformers

transformers High-voltage piezo ceramic transformer is designed as a plate, a cylinder, a washer or a ring etc. The principle of its operation is based on double energy conversion (electrical energy is converted into mechanical one and then mechanical energy is converted into electrical one). The most popular design of a piezo transformer is a plate consisting of the input low-voltage section and the output high-voltage section.

In contrast to ordinary (wire) transformers, piezo transformer requires for its operation supplying to its input ac voltage having a frequency from 40 to 60 kHz. This voltage is converted into mechanical oscillations and then the mechanical oscillations are converted of into high-voltage with the same clock frequency as the input one.
APPLICATIONS
  • High-voltage power supplies, night vision devices, thermal vision devices, background illumination for notebook displays;
  • Low-power ozone generators and air ionizes;
  • Medical therapeutic equipment;
  • Ignition of neon and CCFL lamps.

    • Schematic diagram

    connection diagram

    HIGH-VOLTAGE ONE LAYER ONE INPUT PIEZO CERAMIC TRANSFORMERS
    Electrical characteristics Dimension L x b x a (mm)
    80x18x2 80x12x3.5 80x11x3 35x5x2 22x5x1
     Resonant frequency (fr), kHz 40±3 42.5±3 42.5±3 50±3 75±5
      Input voltage Uin, (V) 50 15 15 30 15
     Load resistance (RL), MΩ 51 500 500 100 330
     Output voltage (Uout), kV 8.0 9.0 9.0 1.0 1.0
     Input capacitance (nF), typical 5 3 3 1.5 0.6
     Input current Iin, (mA), max 80 80 80 - -
      Power (W) From 0.019 to 3

    HIGH-VOLTAGE MULY-LAYER PIEZO TRASFORMERS (5 to 9 layers)
    Dimensions
    (mm)    		 Characteristic
    Resonance
    frequency (
    кHz)    		 Input
    section
    capacit.
    (nF)    		 Output
    section
    capacitance
    (pF)    		 Loss
    tangent
    (tg δ), max    		 Input voltage (V), max Step up ratio at
    RL = 100 МΩ, min    		 Output voltage,V
    20x4x2 84÷90 15÷20 8.9÷12.1 0.008 5.0 500 2500
    20x5x1.5 87÷89 3.2÷4.2* 8.8÷11.8* 10.0 250 2500
    35x5x2 35÷45 28÷38 6.1÷8.3 5.0 700 3500
    70x10x2 20÷25 96÷130 6.4÷8.6 5.0 1200 6000
     Power (W) From 0.5 to 3.0
    * Capacitance value is to be specified.

    Recommendations for mounting

    These recommendations are given for information only and should be specified for each case of a particular application of the piezo transformer in equipment and operating conditions.

    вверх

    ON PURCHASE
    +7 495 530 00 31 and 535 26 90 fax +7 495 534 22 67
    or
    info@elpapiezo.ru
    or
    order directly from here.


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