Question

What is a ultrasonic transducers and mention their charcteristics?

Answer 1

Answer:

Ultrasonic transducers convert AC into ultrasound, as well as the reverse. Ultrasonics, typically refers to piezoelectric transducers or capacitive transducers. Piezoelectric crystals change size and shape when a voltage is applied; AC voltage makes them oscillate at the same frequency and produce ultrasonic sound.

Answer 2

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Ultrasonic transducers and ultrasonic sensors are devices that generate or sense ultrasound energy. They can be divided into three broad categories: transmitters, receivers and transceivers. Transmitters convert electrical signals into ultrasound, receivers convert ultrasound into electrical signals, and transceivers can both transmit and receive ultrasound.

Following is a list of some of the important static characteristics of transducers:-

• Sensitivity.
• Linearity.
• Resolution.
• Precision (Accuracy)
• Span and Range.
• Threshold.
• Drift.
• Stability.