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FAQ01374 of Ultrasonic Sensors FAQ

FAQ No. FAQ01374

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What is resonance of Ultrasonic Sensors?


When an electrical signal is applied in pulses at a frequency close to the resonance frequency of the oscillator, even after the electrical signal has stopped, the ultrasonic vibration remains.

This is called resonance.

For a Reflective Sensor, if this continues for a long time, detection becomes impossible.