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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?
Monesh Rathod's user avatar
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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 ...
Raunak Sandu's user avatar
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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. ...
Monesh Rathod's user avatar
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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 ...
Monesh Rathod's user avatar
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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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How to figure out the current drawn by a 40kHz ultrasonic transducer?

I have some 40kHz ultrasonic transducers (the same type as which you find in the common Arduino ultrasonic distance sensors.) All information comparable to a datasheet I got was: I don't get how to ...
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Piezoelectric Harvester Circuitry

Can anyone tell me what type of circuit is used in this piezoelectric harvester? And if possible, could you also provide a diagram of it when connected to battery?
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Difference between Electric Energy and Electric Signal

Gas lighter and phonograph are two applications of direct piezoelectricity. In the first one, we have electric energy as an output and in the second we get electric signal as an output. But, what's ...
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Increase voltage of a 1.6MHz frequency

I have a digital signal with voltage of 3V and frequency of 1.6MHz. How can I increase voltage of this signal to 36V? The signal is generated by PWM feature of esp32. EDIT: I'm trying to use this ...
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Piezo contact mic into MacBook air

I'm wiring an external piezo as contact mic to the TRRS 3.5 jack of a MacBook Air. I'm following the instructions on this post: Piezo contact mic into iMac - avoid signal spikes However, the answer to ...
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How does direct piezoelectric effect convert mechanical energy into electrical energy?

I am studying direct piezoelectric effect and if I understand it well the idea of direct is that if we apply force in an hexagonal cell unit for example, we create a polarisation, but how do we ...
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Can I increase the inductive component stored-energy of a Piezo Buzzer?

In this example of a model for a piezo element, there is an inductive component (I think this is a quartz crystal model -- it should not matter for the question. This graphic was also used here and ...
MicroservicesOnDDD's user avatar
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Can I safely turn a standard computer PSU into a 220VAC to 36VDC converter?

I'm a mostly electronics noob, and wanting to be safe. I am wanting to build my own fog machine, using some piezoelectric discs that I believe work best with 36v (I'm guessing this from looking at ...
Kem Mason's user avatar
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Mimicking the output of a piezo sensor with a membrane potentiometer

High level I'm trying to use an electronic drum pedal as an electronic drum trigger. My specific e-drum unit has only one pedal input, so I need to repurpose a drum trigger input in order to use more ...
Charles Kessler's user avatar
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Do almost all modern smartphones use piezoelectric speakers?

Do almost all modern smartphones use piezoelectric speakers for both the ear speaker and the speakerphone speaker? The reason I ask is because I rinsed off my waterproof smartphone (which I've done ...
End Antisemitic Hate's user avatar
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Piezoelectricity question

If I have a piezoelectric crystal and apply pressure to it , it will be deformed and a voltage between its 2 ends will be generated. Is the voltage generated due to its deformation or due to the ...
Miss Mulan's user avatar
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What are the advantages and advantages of ceramic and Langevin transducers for ultrasonic cleaners?

I have an old large ultrasonic cleaner with 5 ceramic piezo electric transducers (pictured below) epoxied to its tank's underside. They use around 40W of power each. Newer ultrasonic cleaners, ...
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Help with piezoelectric circuit [closed]

I connected three piezoelectric sensors to a rectifier which was further connected to a capacitor (100µF). I kept hitting the sensors for some time, and measured the voltage across the capacitor using ...
Infiniticity's user avatar
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189 views

Power produced by a piezoelectric transducer

When we increase the size of the piezoelectric transducer will this increase the output too? For example, a small piezoelectric disc produces 2V and makes a small LED bulb flicker or light for just a ...
Prathmesh Chauhan's user avatar
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What is being depicted in these piezoelectricity circuit diagrams?

I am currently studying Ultrasonic transducers – Materials and design for sensors, actuators and medical applications by Kentaro Nakamura. Chapter 1.2.2 Piezoelectricity says the following: ...
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How would you apply high voltage on a piece of dielectric making sure breakdown does not occur?

Say you have a piece of dielectric with a breakdown electric field, BDE. For some experimental requirement you have to apply an electric field, E > BDE, across the piece of dielectric without ...
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Ceramic pressure measurement - capacitive or piezoelectrical?

Context: I'm writing about an old industrial training facility used for a petrochemical process. In this training facility, there is a 3-phase separator. On that separator is a pressure measurement. ...
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4 answers
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The piezoelectric effect in natural quartz crystals

Background I have recently started doing a lot of research on the piezoelectric effect with the hopes of gaining a better understanding of the topic. When I can I like to do experiments on top of ...
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Driving piezo scanner tubes using the driven internal electrode configuration

I'm planning on doing a project involving a piezo tube scanner (PTS). The PTS will be used for 3 axis manipulation of a sharp needle. PiezoDrive has a few scanners and some info on how to use them. ...
Harald Lindohf's user avatar
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496 views

Is it possible to drive a power piezoelectric in lower frequency than its own frequency?

I am driving a piezo transducer simply by an inductor series with piezo. the resonant frequency of the piezo is about 40KHz and I designed a 20KHz transducer. I'm giving a pulse voltage (using a class ...
Prof. Hell's user avatar
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What happens when DC is applied to a piezo crystal?

I've heard that when an alternating current is passed through a piezo crystal it vibrates. But what happens if a direct current is passed through the crystal? I'm assuming depending on the direction ...
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Do active PZT audio buzzers (with built-in driver) create dangerous spikes on power supply?

I am planning to add a active piezo element audio buzzer with built-in driver (BESTAR BPT-14X or LOUDITY LD-BZEL-PB04-1408 ) to my recent quite complex MCU project. These buzzers come with built in ...
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Why does the output voltage after full bridge drop so many?

recently I am researching the piezoelectric transducer (PET), which can convert the mechanical energy into electricity. And I found a strange phenomenon. I used the 10MΩ probe of oscilloscope to ...
Nick Long's user avatar
1 vote
2 answers
599 views

How to drive a piezo transducer

I am looking to drive a piezo transducer at its resonant frequency (20kHz) to generate sound waves. I am doing an application similar to sonar technology. I was looking into how to drive the ...
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Basic of a charged piezo : pC/G, mV/G, Signal analysis

This is the first time I use a High impedance piezo sensor and the problems went pretty quickly. Here is the piezo I used : Manufacturer part number : PKGS-00GXP1-R Rating : 0.35pC/G (+/- 15%) ...
Christophe Gudlake's user avatar
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Piezoelectric dilemma!

I am a high school student and have no experience with piezoelectricity but I’m working on a piezoelectric shoe. My plan, initially, was to connect piezoelectric transducers in parallel and solder ...
Serapion's user avatar
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247 views

Can I charge a lipo battery using piezoeletric energy harvesting?

I use a 9V 800mAh lipo Okcell battery to power my ESP8266 ESP-01 with a voltage regulator to change it to 3.3V. I use the ESP to detect the voltage peak from a piezoelectric when someone is running to ...
faiz's user avatar
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1 answer
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Piezoelectric showing strange, slowly fluctuating periodic background noise

We are trying to detect mice's licking using a piezoelectric attached to a metal spout tube that delivers water. It's kind of working in the sense that we can detect licking, but it suffers from ...
Kouichi C. Nakamura's user avatar
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Very confused regarding parallel resistors limiting current

I'm an electronics noob trying to understand this Arduino circuit below. Having very cursory knowledge of electronics, I'm extremely confused by this statement I took from the Arduino Knock example: ...
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What is equivalent of C0 in mechanical system?

In this picture write all their equivalent Body in mechanical system and electrical circuit for a piezoelectric. What is equivalent of C0 in mechanical system?
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What is the relation between resonance frequency and piezoelectric charge coefficient?

We know that the maximum power is lost at the resonant frequency,where the impedance is minimal. On the other hand, when the impedance is minimized, the charge coefficient is maximized. In resonance ...
Fa Had's user avatar
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Piezo electric water vaporizer [closed]

I'm interested in a module that I've seen today and is a cold water vaporizer. I turns water to steam without heating it. Anyways this module needs kind of oscillating circuit to work properly and ...
j_zed_s's user avatar
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uC-adjustable harmonic oscillator circuit @100W

I'm looking for a circuit that performs a harmonic oscillation while its resonance frequency can be controlled with a microcontroller (preferably via an analog signal). The circuit has to drive a set ...
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Smart tires idea: How to measure electrical output of piezo arrays? [closed]

I had an idea where you take piezoelectric material and insert it into/on tires (or tire sleeve), suspension components, bushings etc of automobiles and then store the electric energy generated to ...
Stevan White's user avatar
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When oscillating a piezo, should I use AC or DC square wave?

I have several piezoelectric stacks that I am trying to get to shake/oscillate. An example of what I mean by piezoelectric stack is something like Thorlabs PA3CEW. The drive voltage is specified as ...
Intrastellar Explorer's user avatar