Determining Resonance Frequency and Ultrasonic Nebulizer Boards
When exposed to an AC electric field, a piezoelectric ceramic element changes dimensions cyclically, at the cycling frequency of the field. The frequency at which the ceramic element vibrates most readily, and most efficiently converts the electrical energy input into mechanical energy, is the resonance frequency.
The pattern of an element’s responses is depicted in the figure to the right. As the frequency of cycling is increased, the element’s oscillations first approach a frequency at which impedance is minimum (maximum admittance). This minimum impedance frequency, fm, approximates the series resonance frequency, fs, the frequency at which impedance in an electrical circuit describing the element is zero, if resistance caused by mechanical losses is ignored. The minimum impedance frequency also is the resonance frequency, fr. The composition of the ceramic material and the shape and volume of the element determine the resonance frequency. Generally, a thicker element has a lower resonance frequency than a thinner element of the same shape.
Ultrasonic Nebulizers (Fluid Atomizers)
APC offers ultrasonic nebulizer boards and component parts, plus custom design nebulizers.
Ultrasonic nebulizers or fluid atomizers supplied from APC International feature:
– RoHS compliance
– OEM electronic board and piezo elements
– High mist output
– ~10,000 hour PZT ceramic lifetime
– Stainless steel face
– Compact
Typical applications for piezo nebulizer boards include:
– Humidifiers or climate control
– Mist and fog producers
– Fountains
– Water Statuary
– Indoor ponds
Read More On Piezo Applications
What is the Purpose of a Piezo Motor
Piezo Aiding Advancements in The Healthcare Industry
Discrete Piezo Stacks for Ultrasonic Applications
Self Charging Power Cells and Batteries
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