Questions tagged [piezoelectricity]
A physical effect that translates mechanical stress to generated voltage. It is a reciprocal effect, so the application of voltage can induce stress/strain. Used for speakers/microphones, load cells to measure weigh and most commonly in strikers for igniting BBQ's and lighters. A common material the exhibits this effect is quartz.
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Difference between polarization angle and poling angle in piezoelectric material
I was reading the research article: Demonstration of optimizing piezoelectric polarization in the design of a flextensional actuator, where I had confusion differentiating between poling angle, which ...
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Coupling of mechanical and electrical resonances in piezoceramics
What is the relationship between electrical and mechanical resonance of piezoceramics.
I have a piezoceramic disk made of PZT-5A material. Feeding a sinusoidal waveform to it from a signal generator, ...
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How to solder wire on Piezo Disc?
I am working on a project that has this piezo sensor.
How I can connect wire to it?
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Conditioning a piezoelectric sensor via a charge amplifier circuit
I am trying to use a charge amplifier to condition a piezoelectric disc bender (APC International #20-1205).
This is my current schematic:
simulate this circuit – Schematic created using ...
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Why doesn't the output of a step-up transformer overload low-voltage inputs?
I'm working on a proximity sensor using a piezoelectric ultrasonic transceiver. While looking at driver ICs, I came across the following example in the datasheet for TI's PGA460-Q1:
On the righthand ...
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Why does voltage spike when resonance frequency is matched with crystal oscillator?
I am learning to test the accuracy of specific frequencies of crystal oscillators using a function generator and oscilloscope. When you get closer the the actual frequency of the crystal the voltage ...
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Do piezoelectric or piezoceramic sensors have a fixed resonating frequency?
I am working with a sensor which has piezos in it. I want to know what piezo resonating frequency really means. The piezo I'm using has a resonating frequency of 570kHz as mentioned on the website.
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How can I find the resonating frequency of a piezo crystal?
The crystal looks like in the given image I want to find the resonating frequency, whether is it variable or fixed.
I find its manufacturer has not given much detail about it.
Does a piezo resonate ...
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How can I amplify the microampere current of a piezoelectric sensor up to milli-ampere?
I want to harvest the energy from piezoelectric sensors to charge a 3.7V battery but the piezoelectric only produces a microampere current. Is it possible to to amplify it to charge the battery faster?...
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Designing a Charge Amplifier Circuit in PSpice for Piezoelectric Sensor
I'm new to using OrCAD PSPICE 16.6 and need some help. I'm trying to design a charge amplifier for a piezo sensor before building the actual circuit. I've chosen a VSIN source as my input to represent ...
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Generating cold plasma using a Piezo Transformer
I am trying to generate cold plasma using a multi layer piezo transformer.
My understanding was that it was as simple as applying a 15 Vpp to the transformer, but it did not work.
I was trying to ...
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Would noise from MLCCs be cancelled out if adjacent capacitors had different polarity?
I have a DC voltage with a high ripple current at 10 kHz which produces an audible noise from the MLCCs on the PCB. I can't change the frequency and I need to stick to MLCC class II capacitors for ...
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What type of signal conditioning is needed for this type of sensor?
Regarding a piezo sensor like this one, if I want to read the output by an ADC does it require a buffer, a instrumentation amplifier or a type of interface?
I don't know the output impedance of it and ...
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Generating 50-300 Hz oscillations with piezoelectric stacks
I am currently working on a project that prompts me to find/design sources of mechanical oscillations, similar to the ones generated by a motor with an eccentric load used in mobile phones and similar ...
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Difference between Pierce and Colpitts oscillators
Can someone tell me what the exact differences are between the Pierce and the Colpitts oscillator?
I've read in wikipedia that the Pierce oscillator is a derivative of the Colpitts oscillator, but I ...
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