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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59 views

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%) ...
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113 views

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 ...
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65 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 ...
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SMD piezo solution for pressure/vibration sensors

I've been working with piezo discs for simple applications (i.e. detecting touch/knock, where different levels of intensity can be read). For large production, stripping wires and hand soldering ...
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Do Piezoelectric Transducers/Hydrophones have single ended or differential output

I am trying to figure out if a piezoelectric hydrophone I am using has a differential or single ended output. The datasheet does not say if the device's output is single ended or differential, but it ...
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85 views

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 ...
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105 views

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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67 views

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 ...
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139 views

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 ...
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55 views

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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84 views

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 ...
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139 views

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 ...
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49 views

Is it possible to measure impact force using Flexible PVDF Piezoelectric Film?

If it is possible , should i use integrator circuit first to hold the signal then follow it by other signal processing signals (amplification and noise filtering ) ? , knowing that i tried to connect ...
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129 views

Is it possible to power a MCU with a button press / touch? [closed]

I hope to use a piezoelectric button to harvest and produce a sufficient energy burst to power ON and bootup a MSP430 for a few ms enough to update a simple data structure (e.g. two integers stored in ...
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63 views

Should a piezoelectric sensor be modeled as a voltage or current source?

I know that one can do source transformation between current and voltage source. But take a DC power supply, and we usually model it as a voltage source because the voltage is constant even the load ...
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100 views

Read data from strain-gauge Labjack, Arduino

I am working on a project where we have to record breathing data. For that we ordered a LabJack U3-LV along a with an amplifier (datasheet) and a belt which is some kind of strain gauge I think. We ...
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212 views

quartz crystal oscillator applied voltage

I know that in quartz watches a quartz crystal is used to keep time by counting it's vibrations, caused by the voltage applied to it. I don't understand if this voltage is DC or AC: If DC is used, ...
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How can I change a DC current to a 1.7/2.4 MHz AC current for piezoelectric device

I would like to start by saying my experience in electronics is very limited and I will include pictures of everything. I am, however, trying to assemble a device which puts a current through a ...
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150 views

Replacing a magnetic speaker with a non-magnetic one

I need to mount a speaker next to a magnetic compass. Any suggestions? I have a becker radio which comes with a traditional 4 ohm moving coil magnetic speaker. Due to space limitations I don't really ...
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35 views

Charge Measurement for Piezoelectric Sensor

I want to measure the charge displaced by a force acting on a piezoelectric sensor. The problem is I don't know the sensor so I have no idea how big the current generated by the sensor may be nor what ...
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130 views

Help identify a water level sensor in humidifier

I have this ultrasonic humidifier that looks like this: It has a piezoelectric transducer that produces the vapor. It also has a sensor that turns it off when the water runs out. The unit now just ...
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71 views

Ultrasonic Piezoelectric Pulse Amplification

I am working on a project that is going to use an IC similar to the Maxim MAX35103. I have not decided on the exact IC yet, but for ease of this discussion, we will assume the MAX35103. This MAX35103 ...
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164 views

Bypassing refrigerator door alarm piezoelectric buzzer

My appliances keep beeping at me. How can I deactivate or bypass this refrigerator door alarm buzzer without affecting the rest of the circuit? I thought I could just cut/connect the wires at the ...
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807 views

What actually is the load capacitance of a quartz crystal?

I'm having hard time understanding the principles of piezoelectric crystal oscillators. I've found this picture: I understand that "load capacitance" is something you have to connect to a crystal. I ...
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60 views

How can I limit the voltage of a circuit so that it is always between 8 and 15 volts?

I am currently working on a project in which I am using piezoelectric material to charge a battery. The voltage output of the piezoelectric material is variable depending on how much mechanical energy ...
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95 views

Thin plate piezoelectric transducer glued to flat surface in shear mode

I want to glue a piezo plate looking like in the image below such that the wide surface of the plate gets glued onto a flat surface. The image is part of the datasheet from here. If I apply an AC ...
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719 views

How can a signal itself have a high impedance?

Observation: Recently I worked with a piezoelectric sensor and read that the sensor itself has a high impedance. Because of this, an op amp of high impedance was required to amplify the signal. ...
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70 views

Piezo impact detection

I'm creating a Nerf gun target with Arduino for my little brother. To detect the impact I was thinking about using piezo's. They would be located on the back of the targets (alimunium plates that do ...
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119 views

A sensor which can measure the vibration of a material

I am planning on making a musical instrument where I require the conversion of vibration of a material to voltage. The idea is to make a percussion instrument where I hit a plate made of a certain ...
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1answer
56 views

Anomolous behaviour when taking ADC readings

I'm using ADC on my STM32F407 to read the signals coming from a piezoelectric sensor. I have written my code in such a way that if input crosses a certain threshold, it starts sampling and storing it ...
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127 views

GaN & SiC piezoelectricity problematic?

I read that galium nitride and silicon carbide are piezo materials.Does this cause some problems? I can imagine that unwanted piezoelectricity directly in the circuit path would cause some kind of ...
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992 views

Sensor to check if door is locked [closed]

I’m taking a subject of entrepreneurship and we have to present an idea to put in the market. My group thought about a keychain with a little light that warns us if we locked our front door or forgot. ...
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398 views

Can I develop constant force (pressure) from piezoelectric crystal?

Can I develop constant force (pressure) from piezoelectric crystal applying constant voltage?
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798 views

Is it possible to create a voltage divider without resistors?

I'm prototyping a chromatic guitar tuner with an Arduino DUE and a piezoelectric sensor. I was trying to amplify the sensor's signal and connect it to the Arduino's ADC pin. So I referred TI's ...
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51 views

7MHz Transducer Measuring Doppler Shift

I am currently messing around with a project I thought would be fun but am having some issues. My goal is to use a signal generator to send a wave through my 7MHz (Steminc) piezo s-configuration ...
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235 views

TrackPoint a.k.a pointing stick 2-axis force sensor

I have an application that would benefit from a sensitive two-axis force or bending torque measurement very much like what a pointing stick (a.k.a. TrackPoint) used to do in a ThinkPad, apparently ...
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Piezoelectric effect in cables?

I am using a very sensitive transimpedance amplifier on a 3m long cable to a photodiode. Signal levels are about 70 nA - 700 nA. Bumping into the cable causes a large voltage spike on the output of ...
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92 views

What technology exists that could activate a small circuit upon high acceleration/impact?

The circuit will fit inside a 12 gauge shotgun shell, be fired from it (with less gunpowder), and will have DC batteries. I'm wanting to conserve battery life until the shot is fired. When fired, I ...
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1k views

Parallel coupling of piezoelectric

I'm trying to couple multiple piezoelectric discs as parallel to get electrical energy through vibration. using LTC3588 rectifier , which way is correct: wiring all piezo parallel,then connect output ...
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Electrical power in piezoelectric transducer

This question is from the book Diagnostic Ultrasound Imaging: Inside Out By Thomas L. Szabo, regarding the power flowing into the piezoelectric ultrasound transducers. In chapter 5 (transducers) page-...
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Help with modelling a piezo

I'm using the Van Dyke model from this article and I'm a bit lost on a few things. Since the only nodes I can physically connect to are the ends, can I assume that I am limited to the voltage across ...
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153 views

Driving piezoelectric crystals, low to high or matched impedance?

When designing an interface between a fixed frequency RF generator and a piezoelectric crystal, should the aim be to match the load impedance to the source impedance (for maximum power transfer). Or ...
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514 views

Make high voltage spark travel further?

Okay, so I have this piezoelectric barbecue igniter so that I can make a remote igniter. The problem is that if I add a length of wire the spark becomes very small. Is there any way to make the spark ...
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447 views

Piezoelectricity in water mediums

I am trying to run an experiment using a piezo ceramic cylindrical transducer (32X30X10MM 29 KHZ) to send a signal from the inside of a water-filled test metal tube to a transducer mounted on the ...
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2answers
317 views

By increasing the size of the piezoelectric ceramic disc used in ultrasonic humidifier, does it increase the amount of mist generated?

I'm fairly new to piezoelectricity and I have managed to research online on how ultrasonic humidifiers work. However, there has been very little mention on the size of the piezoelectric ceramic disc ...
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4k views

Maximum Resonant Impedance of a piezo disc

I have a couple questions regarding piezo discs. I have done research on resonant impedance and somewhat understand it. What I am still confused on is whether or not the MAX resonant impedance would ...
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365 views

RPi Pressure Sensor using Piezo Transducer

I am trying to make a pressure sensor to use with my raspberry pi zero. I would like to avoid making another purchase, so while an ADC or FSR would be easier I would like to figure this method out. ...
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213 views

Ungenerated Voltage across the DMM and random spikes across the Oscilloscope

I am working with piezoelectric material known as PZT-P-43 MY PZT datasheet (please look at the red outlined). So far I have been trying to find the Energy that is being delivered to my 100uF ...
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351 views

Driving Ultrasonic Transducer

Because my system needs higher power for the ultrasonic transducer, I need to drive the transducer with higher voltage. I came up with following ideas driving transducer with 10V peak to peak voltage....