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Questions tagged [transducer]

A transducer is a device that converts energy from one form to another. Use this tag for questions about transducers that convert to or from electrical energy.

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Is there anyway to estimate the time average power without knowing the power factor?

I am driving a transducer with a function generator connected to an amplifier. I need to work out the time average power entering the transducer for safety reasons. I understand it can be calculated ...
UltrasoundNeuro's user avatar
1 vote
1 answer
137 views

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 ...
piotr's user avatar
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0 votes
4 answers
77 views

Ultrasonic flow sensor to measure water volume [closed]

I’m building a project which displays the total volume of water which has passed through a pipe. I want to use an ultrasonic flow transducer https://www.digikey.com.au/en/products/detail/audiowell-...
Joeblogs's user avatar
0 votes
2 answers
116 views

How does this ultrasound transmitter work?

Can anyone explain each component and why it is used? Why Q dash used instead of Q from IC 74121? why .1 nad 47 microfarad used? how the 0 to 9V and 0 to -100 V obtained? reference site https://www....
Abhiram MH's user avatar
1 vote
1 answer
57 views

Will this electric guitar wiring scheme be noisy?

I want to wire my guitar using two SPDT switches for my pickup selector. This is so I can have four sounds: lower, upper, both in parallel, both in series. I'm concerned that when it's set to use ...
neenscrame's user avatar
0 votes
2 answers
122 views

Sinusoid Amplitude for an Ultrasonic Transducer

I want to design a driver for PKT40A from ThorLabs. The spec sheet indicates "Power (Typical, Instantaneous @ 3 kV)" of 700W, but the "Impedance at Resonant Frequency" of <12 ...
beardeadclown's user avatar
2 votes
2 answers
142 views

BJT Zero-Crossing Detector for 40kHz Ultrasonic Signal - Distortion & Receiver Issues

General Information About the Project I am trying to design a zero-crossing detector circuit for convert the sinusoidal signal from an ultrasonic transducer to a square wave. Here is the image of ...
kkrgzz's user avatar
  • 121
3 votes
1 answer
308 views

How to determine voltage level of the ultrasonic transducer?

I am designing the generator for an ultrasonic transducer for a cleaning system and I am not sure how to set the output voltage level. I measured the voltage level of the existing products, peak ...
hax's user avatar
  • 33
0 votes
1 answer
64 views

Vibration transducer to ADC of STM32

I'm trying to design a circuit to read the vibration value from a vibration transducer and I need some help with it. The signal from the transducer has DC component of 12 volts and a varying AC ...
FunkyAP's user avatar
1 vote
1 answer
62 views

Signal conditioning for a current transducer

I am using a current transducer (LPSR 15-NP) to measure the current that is flowing through my AC servo motor powered by my SVPWM PCB. I have currently implemented an open loop control to the motor ...
Syed Kumayl Raza Moosavi's user avatar
0 votes
1 answer
99 views

How to lower down output power of low power ultrasonic transducer?

I'm currently using a low power ultrasonic transducer for micro machining on ceramic. Kindly refer below for the spec of the low power ultrasonic transducer, Output Power = max 2.0W (can be adjusted ...
user1047130's user avatar
0 votes
1 answer
62 views

Help testing Pressure Sensors

I have a few ME600 Metallux sensors that I harvested from some discarded products. I want to build a project with these but would like to verify they work before getting too far. From the datasheet ...
D.Mendez's user avatar
0 votes
1 answer
121 views

Transducer for ultrasonic lens cleaning

I recently discovered TI's ULC1001 driver chip for ultrasonic lens cleaning. I'd like to try this in my next project, but I'm not sure what transducer to use. For an application like his, are ...
Rocketmagnet's user avatar
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1 answer
1k views

Lowrance Sonar Pin outputs

I have this Lowrance fish finder HDS 7 gen 3 that uses a HST-WSBL transducer to map the ocean floor. I wanted to use the transducer on its own with a Arduino. I looked into the pin-out of the fish ...
reactoimpact's user avatar
0 votes
1 answer
210 views

How do 4-20 mA transducers work?

I am quite new to the instrumentation of electronics. I have noticed that most transducers that are used in the industry only use 2 pins, where it is usually marked with a positive 24V pin and an ...
Feri's user avatar
  • 5
1 vote
1 answer
138 views

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 ...
qc_engineering's user avatar
3 votes
7 answers
703 views

Ability of transducers to produce sufficiently amplified signal

Transducers are responsible for conversion from one a form of natural signal into electrical signal. Example - heat variations into electric voltage variations. In the book Microelectronic Circuits ...
Rahul Tiwari's user avatar
0 votes
2 answers
91 views

What cable is this, and what is attached to the end? [closed]

I have a question regarding the cable in a red square, namely that green thing. This is a video from YouTube and I am trying to recreate the same. I want to connect the same type of transducer to the ...
Герман Крауклит's user avatar
0 votes
1 answer
148 views

How can I use 16mm 40kHz waterproof ultrasonic transducers to measure distance?

I have these 16mm 40kHz waterproof ultrasonic transducers:Manorshi MSW-A1640H12TR. I am wondering how to measure distance with these transducers. I desoldered the non-waterproof transducers from a US-...
Hari Krishna's user avatar
0 votes
1 answer
75 views

Why doesn't a guitar pickup's top and bottom cancel itself out? [closed]

A guitar pickup is a coil of wire with some magnets in the middle. The magnets magnetize the steel guitar strings. When those strings a strummed, they vibrate, and since they're magnets they induce a ...
Tim's user avatar
  • 109
0 votes
1 answer
1k views

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 ...
TeD van Loon's user avatar
2 votes
2 answers
298 views

Differential capacitive transducer

I would like to design a differential capacitive transducer to measure the capacitance change in an accelerometer. I cant seem to understand, how to demodulate the signal and keep the actual DC value....
H0li Ravi0li's user avatar
1 vote
1 answer
190 views

Hall effect sensor output

I am planing to use an LF 510 -S / SP15LEM current transducer. I am expected to sense -300A to 300A. What is the output of the Hall effect? Is it mA or mV? If it is mA I will need a resistor to have a ...
user313240's user avatar
-1 votes
1 answer
215 views

Accuracy Class and Full Scale

I am using this formula to calculate the class of an instrument: \$\text{Accuracy Class} = \frac{\max{\text{(Absolute Error in Range of Measurement)}}}{\text{Full Scale Value}}\$ The question is, FSV ...
StrainGauge1Fan's user avatar
0 votes
1 answer
74 views

Large signal current measurements of a loudspeaker

I'm trying to work out a method of measuring electrical current through a loudspeaker load for voltages in excess of +-20 V to be read by an audio interface - I need to scale down both voltage and ...
Jammus's user avatar
  • 1
1 vote
1 answer
340 views

VCO generating a lot of electrical noise, picked up by ultrasonic transducer

In my setup, I have a VCO CD4046 Phase Locked Loop IC generating a square wave, and an ultrasonic transducer set that transmits and receives that setup. You can imagine it looking something like this. ...
HFOrangefish's user avatar
0 votes
1 answer
195 views

Offsetting an ultrasonic receiver's signal for an amplifier with a floating ground

I have an ultrasonic receiver that I'm putting through an amplifier. I've created a floating ground for the amplifier (because I want to pretend having a negative voltage supply). However, to achieve ...
HFOrangefish's user avatar
1 vote
1 answer
121 views

What does 'Output load (pull up or pull down' mean on a datasheet for a pressure transducer?

I am setting up a sensor network to monitor a few things including pressure. I am going through the following datasheet, honeywell sensor, and it has a field called 'Output load (pull up or pull down)'...
Kody Rogers's user avatar
1 vote
3 answers
597 views

Determine how to drive and read an unknown three wire pressure sensor

This three-wire pressure transducer pinout, drive type, and electrical specifications are unknown. It should be a typical industrial transducer. I have tried assuming it is an amplified device with a ...
ndemarco's user avatar
  • 161
0 votes
1 answer
93 views

Spark generator current limiter

I am using a spark generator for electrical discharge machining and mounted a current transducer to read the current value of the arc between workpiece and electrode. When the electrode gets too near ...
Philly Billy's user avatar
1 vote
2 answers
454 views

Why do ultrasonic cleaner transducers usually have two piezoelectric discs (or rings)?

Most of the diagrams for them I've seen show that. Is it for the purpose of amplification, or some other reason?
Tom's user avatar
  • 507
1 vote
1 answer
514 views

Ultrasonic transducers driver review (25 kHz, 150 Vp-p)

Transducers specs: Resonance frequency = 25 kHz +/-1 kHz Maximum driving voltage = 150 Vp-p Capacitance = 2.4 nF +/-20% Proposed driver circuit and simulation: Seven transducers are driven for a ...
Abdella's user avatar
  • 2,612
0 votes
1 answer
68 views

Component identification - ultrasonic transducer

We have a Chinese made ultrasonic transducer, 120kHz approximately, 25mm x 25mm dia. It has three wires - red, green and white. The body is PVDF We have determined that the red and white are used to ...
Dirk Bruere's user avatar
0 votes
2 answers
161 views

Can this buffer provide adequate current to drive an ultrasonic transducer?

I am using a BUF634P Buffer (Datasheet) to drive a wideband ultrasonic transducer. The impedance of the transducer varies with frequency and reaches a minimum X = 100 Ω, while its resistance (...
Rhodes's user avatar
  • 1
2 votes
1 answer
138 views

What sort of iron rod should I use in a magnetostriction oscillator?

I'm trying to make a magnetostriction oscillator at home. Here is the circuit diagram: 1 DC Power Supply 2 Ferromagnetic Core (Iron) 3 NPN Bipolar Junction Transistor (2N2222) 4 Capacitor C 5 Primary ...
ScreamingPigeon's user avatar
1 vote
2 answers
908 views

How to build a circuit which allows a piezo transducer to act as both a transmitter and receiver

I am a student and am currently working on a project where I require a piezo transducer to act as both a transmitter and receiver. I am finding it difficult to build a circuit where a pulse can be ...
user291514's user avatar
1 vote
0 answers
123 views

Is a dsPIC33 suitable for creating a 40 kHz signal with 16 bits of resolution as input for ultrasonic transducers?

I'm trying to build a parametric speaker (Directional speaker) that could output a somewhat decent and high-quality sound hence why I'm aiming for a 16-bit resolution. The audio signal needs to be ...
Sepand.S's user avatar
  • 161
0 votes
1 answer
79 views

Cost-effective current monitoring solution for PIC

I'm in search of a cost-effective solution for monitoring the current draw in a resistive heating element using a PIC. All of the Hall Effect sensors that I've looked into seem to output the same AC ...
Derek Lyons's user avatar
0 votes
2 answers
407 views

Read 4wire pressure transducer via a differential amplifier

I have been trying to read a 4wire pressure transducer (M3021-000005-01KPG) with a microcontroller, but problems keep arising. First of all, I realized that the signal (0-100 mV) is differential, ...
Jim Moustroufis's user avatar
0 votes
0 answers
308 views

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 ...
Lasermonkey's user avatar
3 votes
3 answers
1k views

Is a potentiometer an actuator or sensor?

While I was taking notes I get confused by the component named "potentiometer", I don't know in which category I should place it. If I'm correct the definition of a sensor is broadly "a ...
cortantief's user avatar
1 vote
0 answers
108 views

How to match Transformer output Impedance for Ultrasonic Cleaning Transducer

I have a transformer outputting the 240VAC 40kHz. The Transducer is 50W, 4100pF, 10-20 Ohm at resonance, ~40kHz resonance) The Secondary of the transformer is 12mH. I am trying to match the impedance ...
Josh's user avatar
  • 13
0 votes
2 answers
106 views

TRT-25 and Arduino Uno

I need help on a project I am working on. We are trying to integrate a reaction torque sensor and I am having a hard time deciding how to go about it. Previously I assumed that like my load cell I ...
PCR6955's user avatar
3 votes
1 answer
481 views

CW Doppler probe for fetal doppler and blood flow velocity

I am currently working on a microcontroller based project to measure the blood flow velocity using ultrasound doppler. I have purchased two Spengler 8 MHz continuous mode probes in order to measure ...
chaosmind's user avatar
  • 145
1 vote
1 answer
378 views

How does pulser-receiver circuit work

I want to set up an experiment exactly as given in this data sheet for the T/R switch that I recently bought (the MD0101): Every pulser receiver circuit that I’ve found neglects to address what ...
Landon's user avatar
  • 177
0 votes
1 answer
538 views

Reducing resonance in a piezoelectric ultrasonic transducer

I am using a piezo transducer to launch an ultrasonic pulse in air, at a frequency of 125kHz. A picture of the received waveform is attached. My question concerns how I can (electronically) limit the ...
Dirk Bruere's user avatar
0 votes
1 answer
121 views

What is limiting high frequency ultrasound from being high power

This is mostly just our of curiosity and I feel like I may be missing something basic, but what is limiting ultrasond transducers in the range of 500kHz-MHz from not outputting higher power like the ...
Hatstrow's user avatar
1 vote
3 answers
2k views

ADC input filter design for DC input signal

My plan is to use an ADS1115 ADC to read a low impedance 0-5V output signal from a level transducer. The ADC data sheet gives guidance for ADC input filtering. This data sheet, and even other input ...
James Pie's user avatar
1 vote
0 answers
278 views

Parallel Resonance in Ultrasonic Transducers (Langevin)

I am working on a power-supply for ultrasonic welding machines and want to drive the transducer at its parallel resonance. The Butterworth-Van Dyke model paramters are : L = 24.73e-3; C = 1.14e-9; Cos ...
Farvez Farook's user avatar
0 votes
0 answers
328 views

Pressure to current conversion

I was trying to convert the pressure values (in psi) into 4-20mA current. The range of pressure values I have chosen is between 0-10Psi. But according to the link given below the pressure from 3-15Psi ...
Ujwala's user avatar
  • 11