Piezo Electric Design Notes

ISL Products manufactures a wide variety of piezoelectric acoustic generator elements. These include external drive and

self-oscillating buzzers, beepers, ringers and receivers.

Piezoelectric acoustical transducers are non-mechanical contact devices and feature the following advantages:

• Free from RF noise and contact sparking

• Simple, compact and light weight

• Consume little power and have long life

• Generate various timbres of pitches

Examples of applications are: telephones, watches,calculators, appliances, automobiles, smoke detectors and a

wide variety of other electronic equipment.

The basic element in all of these is a piezoelectric ceramic mounted on a metal diaphragm. When AC voltage is applied

across the electrodes of the piezoelectric ceramic it expands and contracts at the frequency applied.

For more information about Piezo Design, please review our PDF document.