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What's the meaning of this symbol?

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    \$\begingroup\$ "PZ1" implies a piezo device of some kind. \$\endgroup\$
    – The Photon
    Dec 12, 2020 at 5:03
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    \$\begingroup\$ @ThePhoton Thanks.Really helpful to me. \$\endgroup\$
    – JoiZ
    Dec 12, 2020 at 5:56

1 Answer 1

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It's an ultrasonic piezo transducer, a 113 kHz piezo buzzer, although I don't know if you can call it a buzzer if you can't hear it. It is used here in what looks like a mist maker.

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    \$\begingroup\$ A piezo ultrasonic transducer then? \$\endgroup\$
    – Frog
    Dec 12, 2020 at 5:41
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    \$\begingroup\$ @ocrdu Yes, I am making sprayers for the dry weather in winter.I appreciate your talent very much. Your ability to know its usefulness through the circuit diagram is really great.I hope that one day I will have this ability。 \$\endgroup\$
    – JoiZ
    Dec 12, 2020 at 5:53

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