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|Kevin Philips||Last replied to at October 25, 2015, 10:31 am|
I've made an impedance measurement of a PST 150/2x3/5 peizo actuator(Datasheet, P30 - http://electronix.ru/forum/index.php?act=Attach&type=post&id=6158), which has a resonant frequency of 120kHz. The result i get is shown here - http://s22.postimg.org/hkeqirjnl/Piezo.png.
What could possibly causing the resonant and anti-resonant frequencies to be significantly higher than the resonant frequency stated in the datasheet
I made the measurements with an Agilent Technologies Impedance Analyzer.
Any help is grateful, as i can't figure what the issue is.
|PJ||Last replied to at March 21, 2015, 5:54 pm|
Resonant frequency you got is much higher than the datasheet claimed. Possibly two reasons:
1: excitation voltage. Sometimes at working excitation, frequency maybe lower than testing voltage, which is much lower.
2: Testing condition, is there a load required?