A piezoelectric sensor/element is a device that uses the piezoelectric effect, it is basically a device which converts voltage to vibration and vibration to voltage. It normally comes in handy to measure knock (knock sensor) or vibration (vibration sensor).
Now a days it is also used extensively in power generation projects e.g. Foot Step Power Generation.
Specifications:-
- Resonance Frequency: 4.6 Khz +/- 0.5 Khz
- Resonance Impedance: 200 Ohms
- Capacitance: 20nF +/- 30% at 1 Khz
- Operating Temperature -20…+70 C
- Storage Temperature -30…+80 C
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ISD1820 Recording Module Voice Board with Mic
- The main chip: ISD1820.
- Operating Voltage: DC 3V-5V.
- Loudspeaker: 8 ohm, 0.5W.
- An easy to use 10 seconds of voice recording.
- High-quality, natural voice restored.
- Can be used as a propaganda module.
- With looping, jog playback, single-pass play function.
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