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 ...

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0answers
18 views

Piezoelectric mobile charging technique [on hold]

What is the voltage and frequency level of Piezoelectric generator for wireless mobile charging technique?
1
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1answer
31 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 ...
0
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0answers
28 views

Transducer - Tension drop and rising pulse time increasing

I'm working on an echograph project and I have some problem with the transducer, could you help me please? I generate a high pulse voltage of -150V. When I plug the transducer, the tension is droping ...
0
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2answers
42 views

How to simulate P-E loop of a lossy capacitor?

I want to simulate the P-E loop for a lossy capacitor (figure 1c below). For this purpose it's enough to plot the charge Q across the capacitor vs. the voltage V across the capacitor because \$P ...
1
vote
1answer
60 views

Pressure sensing controller using Stress Ball

I am thinking of a project proposal for my robotics course and we are required to make one that has a potential application on physical therapy or medical fields. One thing that came across my mind is ...
0
votes
1answer
35 views

piezoelectricity [closed]

By knowing some of the features of piezoelectric sensor, I want to know more about this sensor. how does it actually works? Does it require application of pressure and releasing that pressure often to ...
0
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1answer
190 views

How can i make a ceramic piezo operate at a specific frequency?

I recently just ordered several ceramic piezos used to aerosalize water and essential ...
0
votes
0answers
37 views

Can i use a hartley oscillator to drive a piezo atomizer?

I am currently trying to build my own natural oil diffuser and I have just finished ordering some piezo atomizers that operate at 1.75MHz. I was wondering if I could use a Hartley Oscillator to drive ...
1
vote
2answers
67 views

Piezo contact mic into iMac - avoid signal spikes

I've wired an external piezo as contact mic to the TRRS 3.5 jack of an iMac and it is working fine - BUT the signal will just randomly stop after hitting the contact mic several times too hard, so I ...
0
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0answers
39 views

How can I approximate piezoelectric power harvesting?

I'm looking at energy harvesting options in an environment that sees frequent, high-G shocks. Short of building a prototype, is there some way to estimate at least orders of magnitude of expected ...
3
votes
1answer
132 views

Piezoelectric vibration energy harvesting

Recently I'm working on a project aiming to convert the vibration of sound waves into electricity to charge batteries using a piezoelectric material (MFC type). I was trying to use the human voice as ...
-1
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2answers
313 views

Many small and cheap linear actuators [closed]

Me and my friends are trying to build a linear actuator matrix. It's supposed to be a grid of pins that go up and down at reasonably fast speed (more than 1cm/s, the faster the better). Problem is, ...
0
votes
2answers
118 views

AC to DC convert circuit without IC

I've been trying to find a AC to DC converting circuit that will take a piezoelectric crystal as its input. I have the piezo to a bridge rectifier but all the diagrams I am finding have some kind of ...
0
votes
1answer
122 views

Setting up piezo pump with arduino

I'm trying to control a 12V piezo pump (with an inbuilt driver) and I'm a bit unsure how to use it safely. I'm using an Arduino Uno to control it, with an N-channel MOSFET rated at 60V 30A (with a 10K ...
0
votes
1answer
198 views

Piezoelectric Transducer, effect of voltage amplitude vs frequency of pulsing signal?

I am not an expert in piezoelectric transducers used for ultrasound applications so I am looking for some insight into the matter. To extract the greatest amount of acoustic energy from the ...
3
votes
3answers
1k views

Quantifying the piezoelectric effect of ceramic capacitors

In comparing ceramics vs tantalums one of the oft cited disadvantages is the tendancy for ceramics to exhibit a piezoelectric (i.e. microphonic) effect. Old-school technicians talk about ceramic ...
1
vote
1answer
477 views

Is this a possible design of Triggered Spark Gap?

I am trying to make a triggered spark gap for discharging capacitors (around 470uF, charged to 300-400V), for entertainment purpose. I have searched for triggered spark gap designs, but I am not sure ...
2
votes
2answers
575 views

How to improve the sensitivity of a piezo assembly?

First and foremost I’d like to warn you that I’m not a native English speaker. Sorry in advance for my mistakes. And also I’m kinda a newbie in terms of electronics; so go easy on me please, I will ...
0
votes
1answer
209 views

Piezoelectric pressure sensors

I'm currently working on designing a circuit that will utilize two piezoelectric stacks (5mm x 5mm x 20mm Parker stacks) that are loaded into a housing in parallel mechanically. The circuit I'm ...
1
vote
1answer
131 views

dual piezo pickup

I experimented with different types of piezoelectric disks as double bass pickups and found two that picked up different parts of the frequency spectrum decently. The specification of the two piezos ...
1
vote
3answers
568 views

How/Where to boost voltage in a 555 timer to drive piezo transducer

I am trying to create a simple and cheap frequency circuit with a 555 timer to drive a piezoelectric transducer. The transducer I am using calls for a 48v input with 1.66Mhz frequency timing. I've ...
2
votes
1answer
1k views

Can I turn a Piezo Buzzer into an ultrasonic Mist Maker?

You may have been reading my questions for a project I am doing. This one is a bit off the wall - I purchased a small 'bottle-top-humidifier' off of amazon and opened it up just to take out the ...
0
votes
2answers
774 views

Help with Piezo conditioning circuit schematic

I have the below schematic that uses a piezo sensor as input and relays that information to an Arduino board for processing. The schematic came from a few folks over at MIT that built a ping pong ...
2
votes
1answer
546 views

Pressure/force map (0-5kg) via sensor grid

I have a surface 40x36 cm. I would like to recognize the shape and weight of specific objects on that surface. Here is the "big picture". The first idea was to use touchscreen overlay (infrared or ...
7
votes
3answers
2k views

Why are non-contact voltage detectors sensitive to vibration?

I have noticed that if I slap a non-contact voltage detector against my palm, the LED blinks. I have tried this with four six different detectors, each a different brand, and each clearly a different ...
0
votes
3answers
585 views

Piano keys touching detection

I would like to make glove with pressure sensor on each finger to detect a moment when piano player touches a key. What kind of sensor should I use? I tried use simple buttons, but it is very ...
3
votes
1answer
277 views

Charge mode piezoelectric signal conditioning

I have a charge-mode piezoelectric dynamic pressure sensor (datasheet link) that I want to read a signal from. If you look at the datasheet it says the sensor outputs are in a balanced and floating ...
1
vote
4answers
512 views

How do I multiplex many signals into my sound card?

I'm looking for a recipe that will allow me to... Hook 24 piezos to a box that will "multiplex" their output into a single signal that I can connect to the microphone input on a PC soundcard. The ...
3
votes
1answer
177 views

Removing a piezo transducer from a reference design

I'm building a system which is intended to supply a microcontroller with a smoke-detection alarm. I'm currently intending to base the circuit on a Microchip RE46C190, which I can source fairly easily. ...
0
votes
1answer
68 views

From Synapse RF Engine to PIC

I made a little program on my Synapse RF Engine to detect some vibrations and then turn on a light basically. What I want to know is how do I get this prototype to an actual PIC that I can connect ...
5
votes
3answers
1k views

Charge Model vs Voltage Model for Piezo Electric Sensor

The following document describes signal conditioning circuits for Piezeoelectric sensors. I was interested in knowing which model should I use when designing signal conditioning circuit for ...
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votes
2answers
684 views

piezo vs mems accelreatometer for earthquake [closed]

if i want to detect earthquake based on acceleration, what kind of accelerometer is better? Piezo or MEMS
12
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4answers
9k views

Driving 50W-250W ultrasonic transducers with sine: Any Class B 135KHz monolithic power amp ICs?

My project needs to drive a medium power ultrasonic piezoelectric transducer from a sine wave (/ sawtooth) sweep generator that sweeps +/- 2% of the transducer resonant frequency. The question: What ...
1
vote
2answers
1k views

Using Low votage audio amplifier with a load cell

I am trying to hack a scale so that I can read the data onto my Arduino. There are four piezo sensors, one at each foot, in the scale. Obviously I can't just read straight off of the sensors, so I ...
8
votes
3answers
874 views

How to diagnose crosstalk

I am completely new to electronics, and am trying to learn by building an electronic drum set. I've found lots of examples online of circuits to condition the output from a piezo to be read by a ...
1
vote
2answers
375 views

Sample application for generating energy from Piezeo Electric Crystal.?

I am working on a project where I need to prove that Piezeo electric crystal can help us to generate electricity and can be applicable on streets.My question is that where can I find suitable ...
3
votes
2answers
313 views

Circuit movement detector

I'm looking for some simple schematic for movement detection. I want to use it with a small hobby project of my own to detect if someone is moving the box, doesn't matter the direction. I'm looking ...
1
vote
3answers
1k views

Controlling piezoelectric-actuated mirror wth arduino

I would like to know where I can purchase a piezoelectric-actuated mirror device, such as those used in a single-colour laser pattern (not scanning) projector eg. the kinds used at music ...
2
votes
2answers
1k views

Arduino Piezo Knock Sensor Synth

I would like to create a synthesizer using 20 separate piezos for the triggers. In other words, each piezo would trigger a separate tone. At the very least I would like to know if connecting 20 ...
0
votes
2answers
915 views

Please help identify this diode

This is a part from a (severely amateurish) Piezoelectric transducer amplifier circuit. I am looking to identify this diode so that I can find a datasheet for it as well as possibly purchase more. ...
0
votes
3answers
1k views

Piezo as a switch to flash an led when disturbed

An LED embedded in a small translucent item (say half the size of a pack of cards) that would flash on briefly if the object was disturbed or tipped over. I immediately responded that a piezoelectric ...
6
votes
2answers
6k views

Driving piezo buzzer from MCU pin

I'm looking for the right circuit to connect my piezo buzzer to MCU (STM8S in my case). I don't have a partnumber\datasheet for my particular buzzer, but I've found a number of similar schematics in ...
4
votes
2answers
3k views

What's the function of the diode in this driver connected to a piezo buzzer?

I can't remember the source of this image, but I found a similar image in an Ekulit catalog. One recommended circuit shows just a resistor in series with the piezo buzzer. But this one adds a diode. ...
3
votes
2answers
3k views

Arduino analog signal read problem?

Why do I get analog reading to the non connected ports, by taping the piezo in channel 1 ? The piezo element is only connected to Channel 1 (Arduino A[0] port). The channels Ch 1 – Ch 6 are connected ...
2
votes
4answers
3k views

What's the cheapest way to detect vibration with Arduino?

What's the cheapest way to detect vibration with Arduino? What's the vibration sensor that I need? I want to detect PING PONG NET vibration and light on led if touched.
4
votes
2answers
3k views

Amplifying sound from a microphone

I have a small piezoelectric ultrasonic microphone (receiving signals of around 40 kHz). But the voltages it generates are too small to be read by my micro-controller's ADC. So I want to amplify the ...
0
votes
1answer
791 views

Small Piezo Buzzers

I am looking to get my hands on some Pizeo Buzzers that are as small as possible. So far I have found 10mm round, which is good, but I was wondering if anyone knew of ones that are smaller still? I ...
3
votes
5answers
242 views

Sense vibrations in audible range

I am interested in making a small circuit that could sense the vibrational frequency of the object that it is attached to. The resonant frequencies would be in the audible range (likely 5kHz to 10kHz) ...
10
votes
1answer
16k views

Simple Electric Shock Device

Can anyone tell me how to make a simple electric shocking device (like a electric pen or hand buzzer style). I've seen people use piezoelectric elements from lighters (is that correct?) but I would ...
5
votes
2answers
981 views

Maximum power out of a piezo?

How do you extract the maximum amount of energy from a piezoelectric element? (For energy harvesting purposes.) The maximum power theorem would seem to say that you need to load it with a ...