Questions tagged [piezo]
Piezoelectricity is the electric charge that accumulates in certain solid materials (such as crystals, certain ceramics, and biological matter such as bone, DNA and various proteins) in response to applied mechanical stress.
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Driving Piezo Using Unfiltered Sine Wave PWM
Can piezoelectric components like Langevin transducers be driven using unfiltered near sine wave PWM? If so, what are the upsides / downsides? Where can I learn more?
As an example, I'm attaching ~...
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How do those 2 transformers work together to drive ultrasonic cleaner's piezo?
For a couple days I try to understand how the following ultrasonic driver circuit works. Possibly it drives a 40 kHz piezo. I reverse engineered and drew the circuit. There are lots of things that I ...
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How to drive single or multiple pvdf film type piezo actuators
this is going to be a little long but I wanted to include as much detail as possible in my question. There is a TLDR at the end.
I am part of a design team focused on making a vibration and audio ...
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Audio Preamp Design Feedback
I designed this simple pre-amp circuit for a piezo electric pickup.
I spun a PCB and built 2 boards up.
It works, but I wanted to get some feedback on the design.
Are there any apparent issues with ...
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Ultrasonic Piezo Crystal properties, temperature and phase
I have a pulse consisting of sine waves driving a piezo transducer at around 120kHz into a gas.
If the gas temperature remains constant, but the temperature of the piezo changes how will that affect ...
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Piezo tr switch no echo signal
I set this circuit to use piezo as transceiver. I can perfectly transfer the transmitter signal (10 burst pulse) but as transmitter still connected onto piezo , any reveived signal is disappears. When ...
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How to use a Raspberry Pi to discharge a high voltage capacitor
I'm trying to use a piezo element as a tactile feedback actuator. I've successfully managed to use it with 10 * 9V batteries in series which had an output of 90 volts. However, I'd like to test it in ...
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Piezo T/R switch
I try to use single piezo as transceiver. Is this possible if i can T/R switch using FET or BJT ?
I found this schematich but not sure if it works.
https://www.researchgate.net/publication/...
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Using piezo as range sensor
My objective is to use a single piezo as a transceiver and calculate the distance between the sensor and the object that sound echos from using time of fly. I use ...
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How to connect E 610 piezo amplifier module to the piezo sensor for vibrations? [closed]
I have a piezo amplifier from PI instruments (model: E 610) that has to be connected to a cylindrical vibration sensor(piezo). I do not know how to make it vibrate using the amplifier and a function ...
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Matching circuit for piezo transducer
I am at the stage of designing a system that match impedance of the power output (half-bridge) to a piezo transducer operating at 1MHz (Max 60W of power). I calculated the piezo parameters from the ...
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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 drive a piezoelectric air pump with DC
I have a small 2 watt piezoelectric aquarium air pump, which uses a piezo device instead of an electromagnet, to move a diaphragm. There is a bit of circuitry which seems to convert 220v to 110v, but ...
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Is this a good circuit for connecting a piezo disc sensor to a microcontroller?
I'm making a musical instrument, where you pluck "teeth" which have piezo disc sensors attached to them, and I want to get the output of the piezo into a microcontroller so I can interpret ...
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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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Power stage for driving a 100W piezo in resonance [closed]
I'm trying to design a power stage for driving a piezo transducer. It has resonance at about 1 MHz. My system has a DC voltage of 24V. The circuit will be locking frequency based on phase of voltage ...
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Choosing a strong/flexible wire for Piezo bender
I am using AB4113B
The issue: Due to vibrations wire soldered on the Piezo is breaking.
The setup: Piezo (metal end) soldered on a PCB directly, and wire is soldered on ceramic part to a PCB pad close ...
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Signal conditioning of a piezoelectric sensor
I am currently working on a project that involves the use of a piezoelectric sensor which is of the ceramic type and produces charge when a force is applied. I want to convert this charge to a voltage ...
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Piezo buzzer testing for defects using electrical parameters
I am looking for methods to verify whether a Piezo is damaged/defective or good.
Are there ways to verify that using just electrical parameters like resistance, capacitance etc.
My issue is that it's ...
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Reduce gain of charge amplifier
I have a circuit for measuring piezo signals, roughly based on Analog Devices CN0350. It contains a charge amplifier that converts the piezos' charge to a voltage signal.
When measuring signals of ...
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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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Piezoelectric driver circuit
This circuit is used to drive the piezo actuator used in external cavity diode lasers to tune the frequency of the laser. I don't understand the purpose of Op-amp U9 and the other transistors used. ...
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Piezoelectric driver capable of ~2500hz and 160-200 Vpp capable of driving a 30-50nF disk?
I've been lucky enough to inherit a project where I need to be able to drive 35mm piezoelectric disk at a frequency of 2450 hz and an amplitude of 160 volts peak to peak. The last person on the team ...
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LTC-3588: how to do vibration energy harvesting?
I am trying to collect energy by using an LTC3588 and some piezo elements.
The voltage meter shows from -200mV to 200mV depending on how much / how strong I touch the piezo. I have set the LTC to 3.6V ...
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Noise increases suddenly in op-amp circuit
The circuit is a charge amplifier that connects to a piezoelectric sensor. A buffered voltage divider provides a VDD/2 virtual ground, so the output is in range 0.0V - VDD and oscillates around VDD/2. ...
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Battery charging by vibration energy harvesting (LTC-3588) - how to wire?
I would like to harvest energy to keep a LFP battery charged (for a BLE device which has VERY little consumption). The battery already lasts several months, but since the device will be closed/sealed ...
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Would this crystal radio circuit work?
Would this crystal radio circuit, that I came across, work?
If it would not work, I would like to know which part of the circuit could be the likely cause and why.
The speaker shown is actually a ...
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Determine the Impedance of piezo using NanoVNA
What is the right tool to verify the resonant frequency of 1 Mhz (per spec) piezo? Consider that I need something low cost, does it make sense to use NanoVNA or does it require an impedance analyzer?
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Piezo sensor at resonance - equivalent model
piezo materials are commonly modelled with the BVD model
When the piezo is used as a sensor, they are commonly modelled as a current source in parallel with a capacitor because à external force ...
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Will DAC81404 work as as piezo transducer driver?
I am in the process of designing a PCB that will drive a piezo transducer that is split into 4 quadrants with a DAC81404. The piezo transducer will move an atomically sharp tip to probe the surface of ...
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Self Drive Piezo Element/Self Excited Piezo Element Circuit
I have a self drive piezo element/self excited piezo element that I want to resonate at about 1-2kHz. As of my understanding, by using a circuit like in the figure below, the element will resonate at ...
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Why use a DRV2700 high-voltage piezo driver in this application?
The DRV2700 from Texas Instruments is an integrated circuit for driving piezoelectric/capacitive loads at relatively high voltages (max. +/-100 V) while the supply voltage can be as low as 3.3 V. This ...
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How can I connect two piezoelectric sensors in Proteus?
I'm having a problem on my project. I connected two piezoelectric sensors together in parallel, but when I run the simulation on virtual terminal, the reading shows that it only using one ...
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What is the simplest way to boost the output of a waveform generator to drive a piezo mesh?
I am trying to generate a ~40vpp sine waveform with a Rigol DG1022Z. Its maximum is 20Vpp.
I want to test the device at frequency ranges of a piezo device from 40kHz to up to 200kHz. This is to drive ...
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What piezo do I need to create electricity by walking?
What piezo do I need to create electricity by walking? Would any piezo work? Please help me, I need this for a school science project. I could buy a single piezo just to test, but I want to buy them ...
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Getting only DC from TC442A after inputing a sinewave [closed]
I am trying to increase the current to be able to drive a piezoelement that has an input current of 273.78 mA. Because the output sinewave is 20mA i connected the output of the LM358P to a TC4427A to ...
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I need to create a mechanical vibration of 40 kHz. What would you suggest?
For research purposes, I need to make a vibration of 40 kHz modulated at 200 Hz. I have a DDS signal generator that can output this specific signal.
I tried to amplify this signal, but I'm nowhere ...
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How to amplify signal enough to make a Langevin transducer vibrate?
I'm a little out of my zone of mechanical engineering here, so I'll need your help.
Up to date, I got the right frequency (40 kHz modulated for a 200 Hz low frequency) coming out of my function ...
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Are electrical clocks influenced by vibration?
There are many different electrical clocks for generating pulses with constant frequency (e.g. RC oscillators, crystals, OCXOs, MEMS oscillators, chip-scale atomic clocks).
If they are mounted on a ...
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How synchronous can a number of electrical clocks in separate devices remain? [closed]
Imagine we have 5 circuits/devices and in each we have an electrical clock that generates a pulse (for example with a constant frequency of 100 Hz or 1 kHz).
In the beginning we have wired all the ...
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How to make parallel piezoelectric/PVDF transducers for force measurement?
I am having difficulty in understanding a concept since I am not in the electrical field. I am working on a project to measure the dynamic force on a surface using embedded PVDF transducers. Based on ...
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ADC input protection with a series resistor
I am trying to protect an ATSAML22J18 ADC input from sporadic piezoelectric sensor voltage spikes.
The piezo's typical output range is matched to the sensing application. The application makes it ...
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Limiting piezo input voltage without limiting resolution
I realise I am asking what might seem to be a fairly common question here, at least I have found this question online several times, but really never / rarely an answer with some sort of follow-up ...
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Breadboard to perfboard
Update:
Thanks all! Problem solved. I tried to connect all the resistors to the ground and it did work!
I'm having a problem regarding a circuit on a perfboard. I try to use five piezo sensors which ...
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Measure up to 50um linear displacement with ~100nm accuracy [closed]
I am using some open loop, mechanically amplified piezoelectric (PZT) devices to make linear movements of up to 100um. PZT are well known for hysteresis characteristics thus its repeatability is not ...
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How to drive 400 nF load with DAC
I need to drive a some kind of pzt transducer with a triangular 6 Vpp voltage. The transducer is modeled as a 400 nF capacitor. I want to drive it with 10 kHz 3-9 V triangular voltage however my DAC ...
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How can I create a mist maker with a 9 V DC power supply?
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Note: I am a beginner with electronics so please provide detailed explanations and add descriptions that are more beginner friendly. I really do want to learn how this all works.
I am trying ...
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Sensitivity too low in piezoelectric vibration sensor circuit
I run a parking facility that has recently suffered a rash of thefts, accomplished by cutting through our chain link fence.
I am trying to design a simple circuit using a piezoelectric vibration ...
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Why is PVDF used for ultrasonic receivers and not transmitters?
PVDF is one of the best piezoelectric polymers, and has a good acoustic impedance match with water. It is often used in ultrasonic receivers, but it seems like people don't use it for transmitters. ...
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