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Piezo Element

Piezo Element (Vibration/Knock Sensor)
Availability :    7
৳95
Quantity :
  • Resonant Frequency(kHz): 6.3 ±0.6kHz
  • Resonant Impedance (ohm):  1000 max
  • Capacitance (nF): 10.0 ±30% [1kHz]
  • Disc Diameter: 0.79" (27mm)
  • Wire Lead Length: 1.97" (50mm) (Approx.)

[N.B: The product may have a slight difference what is written in the specifications. This depends on the supplier.]

Piezo elements come in handy when you need to detect vibration or a knock. You can use these for tap or knock sensors pretty easily by reading the voltage on the output. They can also be used for a very small audio transducer such as a buzzer.
This basic Piezo Element measures 27mm across and is a great vibration sensor. Attach the round disc to the object that will be knocked on such as a door and measure the voltage across the two wires. Piezo elements can also produce sound when a voltage is applied across them. They convert between electricity and vibration in both ways; Vibration applied at the round end can be detected as a voltage across the wire leads and inversely, voltage applied across the wire leads causes the round end to vibrate.

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