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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How to determine LS, CS, RS, and CO of a piezo transducer for simulation?
I have a 24mm piezo transducer with the marking SSE2425TAL from overseas. There are no detailed specs nor graphs to get LS, CS, RS, and CO at various frequencies (but just 25 kHz is fine).
I'd like to ...
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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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Help Designing an Impact Detector for Raspberry Pi
I am trying to design a little game where you throw a baseball at a 3x3 grid of 24x18" polycarbonate panels (1/4" thick), and the game detects which of 9 panels is struck. I'm aware there ...
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Turning on a latch circuit with a piezo sensor?
I am trying to build a relatively 'simple' circuit with a piezo sensor that turns on an LED for ~10-20 seconds after it has been tapped.
In the off-state the circuit should use zero current to ...
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Crystal Oscillator Design and "Crystal Drive Level"
I followed the video at the link http://www.analogzoo.com/2015/07/ . The video directs watchers to a tool at http://www.analogzoo.com/lab/pierce_bjt.html to help determine parameters to cause ...
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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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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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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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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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How can we model the piezoelectric behavior of a capacitor to mechanical and thermal transients?
I would like to model the behavior of ceramic capacitor to thermal and mechanical stress.
We are seeing power supply fluctuations during reliability test and suspecting the ceramic capacitors' role in ...
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How to measure the waveform of a piezo igniter?
Is there a (cheap) way to measure the pulse of commercially available piezoelectric igniters like those used in lighters or BBQ grills?
I use them as a cheap (and very crude, for sure) method for ESD ...
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step-up transformer design - basics
I want to step up Li-ion battery voltage to ~100-125V at ~145kHz and ~0.5Arms.
(The circuit is to drive a small piezo at its ultrasonic resonant frequency.)
I have limited space.
Are there any rules ...
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SSHI circuit on LTSpice
I've been trying to get an SSHI circuit running on LTspice for several days now (see below schematic). My problem is the following: the simulation (.tran) stops after a hundred milliseconds. Being a ...
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Piezo cantilever energy harvester: how to mesure such small power?
I am currently designing a piezo energy harvester and I would like to modify the resonating frequency to maximize the energy recovered(for exemple by changing the center of mass of the cantilever). My ...
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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. ...
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Ultrasonic dual transmitter-receiver circuit
I am building an ultrasonic flow sensor, based on piezoelectric actuators from cheap HR-SR04 modules. I need to measure the speed of sound back and forth. Schematic like this is good to send pulses:
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How can I protect my amplifier, MCU, and laptop from damage in my application circuit?
I am trying to integrate a few devices for a laser stabilization system. I have a tentative circuit diagram that I'm asking for more expert guidance in implementing. I am using an MX200 from ...
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Sensing of AC current. Isolation Capacitor Problems?
I want to measure the AC Current flowing through a Piezocrystal (replaced in the circuit with a resistor) being driven by a TI DRV2700. http://www.ti.com/lit/ds/symlink/drv2700.pdf
This Chip puts out ...
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Driving a piezo speaker at 40 KHz
I'm trying to drive this piezo element at 40 kHz but am running into troubles when using a function generator since the element requires greater drive.
I got the guts of an ultrasonic cleaner to ...
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Piezo Transducer - Constant weight increases sensitivity, why?
I currently have a piezoelectric transducer connected up to an Arduino in the following arrangement
The piezo is normally not very sensitive, unless I tap my finger directly on the sensor, or knock ...
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Using piezo sensors to locate vibration position
I am working on a project where I have to determine the position of vibration or knock using multiple piezo sensors.
I am using simple piezo discs and reading the voltage signals from the discs using ...
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Simple push-pull problem
I've made a circuit based on the schematics below, which works fine at simulation. The goal is to add some extra oomph on the output of a LT1210 opa (V1) to drive a piezo element at higher voltages ...
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Driving a voltage boost circuit with a piezo driver circuit
For a university project, I'm creating my own small speaker. This speaker includes a speaker driver circuit consisting of a transistor and 3 resistors (see figure below).
simulate this circuit –...
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High Speed Piezoactuator Driver-Unexpected (Low) Voltage Output
I'm working on a project that requires charging and discharging a piezoactuator (150V, 1.5μF) extremely fast, IE total slew time allowed ~50μs (so somewhere around a 11A pulse). My background is in ...
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Strange output current waveform
I have another question regarding output voltage and current of the driver as continuation of my question @ Inductance overheating
Voltage measured on the input of the piezo has a square wave shape on ...
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Piezo speaker driver not giving full differential voltage - why?
I am trying to drive a piezo speaker at 20kHz with maximum voltage swing from a 10V source. Previously I had used a square wave plus its inverse to give the equivalent of 20V across the speaker but I ...
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Troubleshooting noisy FET buffer for contact mic
I'm trying to follow the schematic on this page to create a preamp/impedance matcher for a balanced piezo contact mic. I've reproduced the schematic below.
I've built it on a breadboard and I'm ...
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Calculating the magnitude of impedance
I am working on a project to model the electrical characteristics of a piezoelectric (PZT) and would like to get a sanity check to make sure I am going about it in a way that makes sense.
So I am ...
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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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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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Thorlabs PC4QM With TI DRV2700EVM
I am working with a 650nF Thorlabs PC4QM piezo load, whose information I leave attached. And to carry out the operation I'm considering a Texas Instruments DRV2700EVM, has anyone had experience ...
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Piezo Transducer RX/RX switch with a charge amplifier
I'm trying to design a circuit that can both transmit a 40kHz square wave and receive a 40kHz sine wave using the same ultrasonic piezo transducer. Switching between them doesn't have to be very fast (...
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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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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 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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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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Is there any way to increase the impedance of a piezo element?
I'm trying to make a similar earpiece as the old crystal earpieces, that were made of a piezo element. I think they had about 20 kΩ impedance. I bought some piezo elements but I never found any with ...
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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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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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Generate vibration and sense with the same piezo
I would like to build a sensor that generates some vibration on a material and then sense the vibration of the material. The simplest approach seems like using a piezo transducer. Ideally in ...
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Can I use Op-Amps to drive a ultrasonic piezo transducer at 200kHz
I’ll admit I’m not the most knowledgeable guy when it comes to electronic circuits, so I thought I’d ask before breaking anything.
I’m looking to drive a piezo transducer using a 200kHz sine wave. The ...
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Touch sensor selection
I am currently researching a touch/force sensor for my project. Purpose of this post is to get your help in sensor selection.
Below is the information about the project so that you can get insight ...
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What is the use of drain diodes in the circuit below?
This TC7920 driver will be driving a piezo electric load which may behave like a capacitive load at certain frequencies. There is another IC TC8220 which is the same except it is not having the drain ...
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Debugging a SA 90.4 800W class-D audio amplifier
I am using a Re-audio SA 90.4 800W 4-channel class D audio amplifier (https://www.amazon.com/REAudio-SA90-4-4-Channel-Digital-Amplifier/dp/B00RE9EO7K) for some underwater piezoacoustics experiment. ...
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Demultiplexing analog fast signal for 2-axis piezo movement
I am driving a 2-axis stick-slip piezo stage. Currently, I have two controllers, one for each axis. However, I would like to know how can I reduce it to a single controller? I need a sort of a ...
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Help finding a suitable transformer
I have built a circuit that can drive a 3.3v AC output at a few hundred mA. The wave has a frequency of 150Khz. I want to step this up to 60-90v at ~0.5 Watts to drive an ultrasonic piezo. However, I ...
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Placing piezo disk in vibration sensor
I am designing a vibration sensor in enclosure to be placed on vertical surfaces, like windows, doors, etc.
My first try was with ready made sw420 module, but looks like it is to sensitive for my ...
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Piezo buzzer : transient audible noise when exciting over 20kHz
Let's 2 simple experiments, connect a piezo buzzer like this one to a bench amplifier driven by a function generator like this one. Driving voltage is 10V. Now excite it with a
linear chirp from ...
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