50 Pieces - 27mm Piezo Disc Elements with Feedback Electrode for Buzzer / Alarm Circuit / Hartley Oscillator
3 Lead Piezo discs are used to construct Buzzers/Alarms The "3rd Lead" is on the Feedback Electrode Can be used as a standard piezo disc (eliminate blue connection) Resonant Frequency: 4.6KHz +/- 0.5KHz Capacitance @ 1KHz: 20,000pF
These 27mm discs feature a feedback electrode and 3.93" (100mm) leads. Feedback Electrodes are used to construct buzzers, but do not have to be used. To use these in the more conventional sense (pickups, mics, etc..), simply leave the blue lead disconnected. Resonant Frequency 4.6KHz. Resonant Resistance 300 ohm max. Capacitance 16,000pF +/- 30%.
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Audiowell
{"Package Dimensions": "10 x 7 x 1 inches", "Item Weight": "3 ounces", "Manufacturer": "Audiowell", "Date First Available": "June 18, 2013"}