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.
34 questions with no upvoted or accepted answers
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Magnetic sensor preamplifier using op07
I am using this circuit to amplify a sensor signal (220mV p-p) to about 5Vp-p and measuring by microcontroller ADC:
When I connect the input signal, the input voltage level goes up (changes from ...
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Converting ultrasonic power supply from 110VAC to 230VAC
I have an ultrasonic cleaner bought in US, so made to work with 110V, but I would like to use it in EU, so with 230V.
The power supply in the cleaner is pretty simple, so I tried to understand how it ...
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Load cell mathematical model
I'm studying a solution for a weight measuring system that's affected by enviroment vibration - a load cell fixed on a "shaky" frame. My first thought was to use a 3-axis accelerometer (or ...
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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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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 ...
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3
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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 ...
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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 ...
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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 ...
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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 ...
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Vibrating mesh transducer not nebulizing
Currently, I am trying to use a vibrating mesh transducer that's regulated using a high-voltage driver (100±5kHz, 65±5V), that's Grove Water Atomizer board.
Two problems have been arising, which I've ...
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What type of sensor connection would be the most suitable?
I have a pressure transducer with a 6 pin bayonet MIL-C-26482 male connector. I need to wire this connector with a 9 pin female D sub analog input connector and I am not sure how to do so.
Schematic ...
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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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Beam pattern for a linear array comprised of rectangular transducers
I am looking for the beam pattern of a linear array with uniform spacing, d, between n elements.
I know for an array comprised of circular pistons it can be derived from
$$\frac{1}{n}\frac{\sin[n\pi\...
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151
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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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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 ...
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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 ...
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Understanding the workings of an ultrasonic sensor
I am trying to simulate an ultrasonic sensor using a ray-based approach. For that, my current process can roughly be described as such:
approximate wavefront using rays that mimic the shape of the ...
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wiring Tamura 4 pin hall effect current transducer to differential daq
How do i wire a 4 pin hall sensor:
200A model below
https://www.mouser.com/datasheet/2/397/L03SXXXD15-469349.pdf
I don't understand the wiring schematic below
I currently have +15 to pin 1, -15 to ...
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ensuring transducer (transmitter) and receiver polarity
I am trying to implement a simple phased array of 7 transmitters rated 40 kHz. I have a few receivers to measure the acoustic field generated to validate if it works. What is a simple way to measure ...
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Confusion with mapping a transducer range to a different output voltage range
A pressure transducer with a range +/-200Pa has both serial and analog outputs.
I'm only interested in positive pressure besides sometimes the negative pressure needed to be measured when there is ...
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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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Transducer impedance decreased when Amplifier is connected
I am trying to measure beam pattern and impedance curve of a transducer from 70 to 120 khz. To get a nice plot, i have to use an amplifier(op-amp +-14Vs and Gain=14db) between a Signal Generator(Whose ...
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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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How to converting an alarm to ultrasound emitter?
I've heard that it's much more cost effective to convert alarms to ultrasonic emitters vs outright buying ultrasound transducers.
How would you go about tackling such a project?
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A question about temperature change of a transducer
This load-cell has sensitivity Cn = 2mV/V. In the data sheet the only part about the temperature coefficient is:
How can I calculate the change in sensitivity for a 10°C temperature difference?
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Pressure Transducer to complete circuit
I'm using the Adafruit Feather nRF52 to build the HIDScan sketch which essentially allows completed circuits to transmit keys over bluetooth. I have a switch that connects from pin A0 to GND, and ...
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Build a breathalyzer like device but for testing liquid or semi-liquid subtances
As a recovering alcoholic, I know for a scientific fact that alcohol will altogether evaporate from boiling water after sufficient time, and nearly all alcohol from boiling food, which would have a ...
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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 ...
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How to reverse a pressure transducer output voltage
I am trying to set up an air compressor on my truck and run it through a Ford APCM (auxiliary power train control module). It has a 5v output. The APCM has a custom throttle control input on it. It ...
