Pin Type Audio Piezo Sounder PZT Piezoelectric Transducer 7mA
|Min. Sound Output at 10cm (dB)||85|
|Rated Voltage (Vp-p)||12|
|Operating Voltage (Vp-p)||3~28|
|Resonant Frequency (Hz)||3200+/-500|
|Max. Current Consumption (mA)||7|
|Operating Temperature (C)||-30~+115|
|Storage Temperature (C)||-40~+125|
Advantages and disadvantages of piezo?
Advantages:They generate a voltage proportional to the velocity the
crystal is deformed so require no local power source.
Disadvantages: They are high impedence and can pick up stray
voltages in the connecting wires. The crystal is also prone to
cracking if overstressed.
A piezoelectric crystal transducer is an active sensor and it does
not need the help of an external power as it is self-generating. It
is important to know the basics of a piezoelectric quartz crystal
and piezoelectric effect before going into details about the
How to Measure Piezo Transducer Efficiency?
One way to measure the efficiency of a transducer is to compare the
amount of input energy versus output energy. Anytime energy
conversion occurs, some amount of energy will be lost during the
process. In general, the greater the amount of output energy
produced in relation to input energy, the greater the level of
efficiency that is present.