What is a transducer?
A transducer is a device, usually electrical, electronic, electro-mechanical, electromagnetic, photonic, or photovoltaic that converts one type of energy to another for various purposes including measurement or information transfer (for example, pressure sensors). In a broader sense (for example in the Viable System Model) a transducer is sometimes defined as any device that converts a signal from one form to another. A very common device is an audio speaker, which converts electrical voltage variations representing music or speech, to mechanical cone vibration. The speaker cone in turn vibrates air molecules creating acoustical energy.
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A sonar transducer is the element in the sonar apparatus that turns the electrical signal into sound, which is mechanical energy, and then does the opposite for returning signals. A generator of some kind creates and amplifies the electrical signal, it is directed to the transducer, which then makes… the conversion, and the pulse is sent out. The transducer then "listens" for returning energy, and converts anything that comes back into an electrical signal which is sent to the receiver.. Sonar is (briefly) the use of sound (which is mechanical energy) to "look at stuff" in in water or other media. An electrical signal is generated by the equipment, and it is changed into mechanical energy by a special crystal in the same way a speaker changes electrical energy into sound we hear. The transducer is a piezoelectric crystal that works on the principle of the same name. Let's look at a transducer and see how it works, but first let's see what the underlying physics says about it.. Piezoelectric crystals are crystals that change shape when we apply a voltage across the crystal. Depending on the placement of the leads that apply the voltage and the orientation of the crystal, it will expand or contract to a DC voltage. If we reverse the polarity of the applied voltage, the crystal will contract or expand (respectively) in just the opposite way. Applying an AC voltage causes the crystal to respond in that same way, and it will vibrate. These vibrations travel through the water or other media we are applying it to.. The sonar transducer is a crystal mounted in a "holder" or some kind. It has electrical leads attached. The whole of this is "packaged" appropriately depending on whether it is going to be mounted on the hull of a vessel or held in the hand by an operator.. A link is provided to a group of pictures of different types of transducers posted at photobucket. Surf on over and have a look. (MORE)
Answer . Transducer is a device which converts one form of energy into other. For eg eleectric motor, which converts electrical energy in to mechanical energy.
Answer . A transducer is a device, usually electrical , electronic , electro-mechanical , electromagnetic , photonic , or photovoltaic that converts one type of energy to another for various purposes including measurement or information transfer (for example, pressure sensors ). In a… broader sense, a transducer is sometimes defined as any device that converts a signal from one form to another. Source: http://en.wikipedia.org/wiki/Transducer . forward biased pn junction diode (MORE)
Sound -> Electrical (microphones) Force -> Electrical (Load Cells) Kinetic -> Electrical (piezoelectric, generators) Light -> Electrical (solar panels) Thermal -> Electrical (thermocouple) Electrical -> Kinetic (Motors) Electrical -> Magnetic (electromagnets) Electrical -> Optical… (lightbulbs, LEDs) Electrical -> Thermal (heaters) Electrical -> Audio (speakers) *(see the related link below for more information) A device that converts variations in a physical quantity, such aspressure or brightness, into an electrical signal, or vice versa. (MORE)
The basic principle of current transformer is same as that ofthe power transformer. Like the power transformer currenttransformer also contains a primary and a secondary winding.Whenever an alternating current flows through the primary windingalternating magnetic flux is produced, which then induces…alternating current in the secondary winding. In case of currenttransformers the load impedance or "burden" is very small.Therefore the current transformer operates under short circuitconditions. Also the current in the secondary winding does notdepend load impedance but depends on the current flowing in theprimary winding. (MORE)
In general, a transducer is a device for changing one form of energy into another. There are lots of things that qualify as transducers under that definition. Just to cite a few examples, a microphone converts the mechanical energy of sound into electrical energy. A speaker does the opposite. An aco…ustic hydrophone converts the mechanical energy of sound in water or another fluid into electrical energy.. In an example of how a transducer works, in ultrasound investigating technology, an electrical signal is used to create mechanical energy in the transducer, thus creating an outgoing pulse. Then the returning mechanical energy, the echo, is converted into electrical energy by the same transducer. The electrical signal is then used in imaging what the transducer is "looking at" by creating a picture of some sort which will then be evaluated.. In another way, it could be said that a transducer is a device for sensing and relaying a signal, but keep in mind the idea of a change of "form" of the energy. That's what a transducer does is make the change. A transducer might be used to detect level, pressure, temperature, flow, displacement, accelaration, velocity, etc., from the sensing location so it can be sent to another place (like a control room). It consists of different parts like sensing element (the sensor), signal conditioning unit (filtering, amplification, etc.) and in some cases protocol interface (in order to convert the measured value into a digital frame for example). The latter transducer falls into Smart Transducer category.. Links to relevant posts can be found below. (MORE)
They are devices which change variations in one medium to changes in another. For instance, a microphone is a transducer which changes air pressure variations into electric current variations.
Simply put, an ultrasound transducer is the component that generates the ultrasonic signal used in ultrasonic imaging equipments. It also picks up the return signal. A crystal can be made to change shape by electrical stimulation. (It's called piezoelectric effect.) And changing the shape of a cryst…al can cause it to generate an electrical signal. (Again, piezoelectric effect.) Call it a bi-direction process. Send an electrical signal to a transducer and it will convert the electrical energy (signal) into mechanical energy (sound). Because the process works in reverse, the transducer sends out a signal in response to a very short period of stimulation, and then listens for the return echo before sending out another burst. The electronics package behind the scenes both generates the signal and processes the return echo to provide the image we see. We are probably familiar with the naval use of sonar and the sonic "ping" from our television or cinema experiences. The ping can be heard, and then a couple of seconds go by and another ping is heard. (The sonar equipment is listening for the returning echos between pings.) Ultrasound works the same way, only much, much faster. (Human hearing is about 20 cycles per second (cps or Hertz) to 20,000 cps. Medical ultrasonic diagnostic transducers work at well in excess of 1,000,000 cps. Neither your dog nor any bats in the neighborhood can hear that. (MORE)
Force transducers are also commonly recognized as force sensors. Aforce sensor is described as a transducer that converts an inputmechanical force into an electrical output signal.
Passive transducers - require an external power to operate, and the output is a measure of some variation in passive components (e.g. resistance or capacitance) Examples of passive transducer : -Slide-wire resistor â« Resistance strain gauge â« Differential transformer Active Transducers - …Self generating type - do not require an external power, and produce an analog voltage or current when stimulated by some physical form of energy. â« Thermocouple â« Photovoltaic cell â« Moving coil generator (MORE)
a transducer is a device that converts one form of energy to electric energy there are different types of transducers like mic is an acoustic transducer that converts sound energy to electrical energy...resistance changing transducers,inductance changing transducers capacitive type transducer ....ch…ange their values in accordance with an analog quantity to b measured like temp etc....this change produces porportional current or voltage which is basically proportional electrical energy Transducer, in electronics, a device that converts electric energyinto some other form of energy, or vice versa. Transducers are usedin sound systems, in video equipment and in many measuring devices.A transducer used in a measuring device produces an electriccurrent proportional to the strength or intensity of the physicalquantity-such as heat, light, or mechanical stress-to which thetransducer is subjected. Piezoelectric crystals (crystals thatproduce an electric current when deformed) and photoelectric cellsare transducers; so are loudspeakers, which produce sound fromelectric energy. (MORE)
Quartz is used in piezoelectric transducers because of potentialfor high voltage input and acoustic power. Quartz is apiezoelectric crystal and when it is mechanically strained ordeformed by stress, electric charges appear on some surfaces. Whenthe strain is reversed, the polarity of the charges rev…erse. Thisallows vibration of quartz crystals to be transformed into electricpulses. (MORE)
Antenna .- converts propagating electromagnetic waves, to and from conducted electrical signals. . Magnetic cartridge. - converts relative physical motion ,to and from electrical signals. . Tape head. Disk read-and-write head, - converts magnetic fields on a magnetic medium. to and from electrical… signals. . Hall effect sensor. - converts a magnetic field., level into an electrical signal. . Electrochemical transducer . Electromechanical transducer (electromechanical output devices are generically called actuators) . Electroacoustic transducer . Electro-optical transducer(Photoelectric) . Electrostatic . Thermoelectric . Radioacoustic (MORE)
a transducer which can measures a physical quantities and and transmit the informations as coded digital signalsrather then as continuous varying current/ voltage.
Such type of transducer which can covert bio energy into any other form like mechanical or electrical. Example are engine or crystal. Engine convert energy from bio-fossil fuels to mechanical and crystal like tourmaline into electrical oscillations.
The basic principle of a transducer: A transducer which converts a physical quantity to the electrical quantity.
An I/P transducer is a device that converts a 4-20mA current (I) signal into a pressure (P) signal of 3-15psi or 20-100kPa usually to operate pneumatic control valves.
As we knw that tranducer is a device which is used to convert one form of enery into other.similarly power transistor workis to convert one form to anthore
A transducer converts one form of energy, or signal, to another. For instance, a microphone converts sound pressure waves to a voltage. A speaker is also a transducer. It does exactly the opposite, converting a voltage to sound waves.
It is device that will sense the environment in a form of capacitor changes. Usually an oscillator will sense this change and change frequency accordingly
A transducer is a device that converts a physical quantity into some other type of signal eg. sound to voltage, light to current, or vice versa
Transducer changes energy type from one form to another. Example: Light energy to electrical, your ear probably change sound energy to chemical or electrical energy that your brain processes.
It converts linear or angular motion into a changing resistance which may be converted directly to voltage and/or current signals
A photovoltaic transducer is simply another name for a solar panel. A transducer changes one energy to another in this case light energy to electrical energy. The two most common type of photovoltaic transducers are silicon and selenium.
A device that convert one form of energy into another form is called the transducer. so optical transducer is a device that can convert electric energy into optical energy.
What are Variable Resistance Transducers? . The variable resistance transducers are one of the most commonly used types of transducers. The variable resistance transducers are also called as resistive transducers or resistive sensors. They can be used for measuring various physical quantities like… temperature, pressure, displacement, force, vibrations etc. These transducers are usually used as the secondary transducers, where the output from the primary mechanical transducer acts as the input for the variable resistance transducer. The output obtained from it is calibrated against the input quantity and it directly gives the value of the input.. Principle of Working of Variable Resistance Transducer . The variable resistance transducer elements work on the principle that the resistance of the conductor is directly proportional to the length of the conductor and inversely proportional to the area of the conductor. Thus if L is the length of the conductor (in m) and A is its area (in m square), its resistance (in ohms) is given by:. Load Cell Alternative www.Tekscan.com/Load-Cell.html. Measure Force with our Ultra-Thin, Flexible, & Accurate Force Sensors. Ads by Google. R = ÏL/A Where Ï is called as resistivity of the material and it is constant for the materials and is measured in ohm-m The resistance of some materials also changes with the change in their temperature. This principle is primarily used for the measurement of temperature.. Some Examples of Variable Resistance Transducers . Here some of the popular variable resistance transducers that are being used for various applications: 1) Sliding contact devices: In the sliding contact type of variable resistance transducers there is a long conductor whose effective length is variable. One end of the conductor is fixed, while the position of the other end is decided by the slider or the brush that can move along the whole length of the conductor. The slider is connected to the body whose displacement is to be measured. When the body moves the slider also moves along the conductor so its effective length changes, due to which it resistance also changes. The effective resistance is measured as the resistance between the fixed position of the conductor and the position of the sliding contact. The value of the resistance is calibrated against the input quantity, whose value can be measured directly. One of most popular sliding contact type of variable resistance transducer is the potentiometer. These devices can be used to measured linear as well as angular displacement. 2) Wire resistance strain gauge: This is an interesting devise used for the measurement of force, stress and strain. When the tension is applied to the electrical conductor, its length increases while the cross section area decreases, due to which the resistance of the conductor changes. This change in resistance can be measured easily and is calibrated against the input quantity. 3) Thermistors: Thermistors work on the principle that resistance of some materials changes with the change in their temperature. When the temperature of the material changes, its resistance changes and it can be measured easily and calibrated against the input quantity. The commonly used thermistors are made up of the ceramic like semiconducting materials such as oxides of manganese, nickel and cobalt. Thermistors can be used for the measurement of temperature, as electric power sensing devices and also as the controls for various processes. 4) Thermocouple: The thermocouples work on the principle of Seeback effect, Peltier effect and Thomson effect. As per the Seeback effect, when two dissimilar elements are joined at their ends the electromotive force exists at their junction. As per Peltier effect, the amount of electromotive force generated depends on the temperature of the junction, while Thomson effect says that the amount of voltage generated depends on the temperature gradient along the conductors in the circuit. All these effects are used in the thermocouple. The voltage output from the thermocouple changes as its temperature changes or the temperature of the body in whose contact it is changes. The voltage output is calibrated against the temperature of the body that can be measured easily. Thermocouple is a very popular devise used for measurement of temperature.. Reference . Book: Mechanical Measurements by Thomas G. Beckwith and N. Lewis Buck. (MORE)
A Transducer is a device used to change a mechanical property to an electrical one. Or vice versa. Common transducers in everyday use would be a microphone and a loudspeaker. They change movement of air to an electrical signal. Transducers are also used in weighing scales, where a bending moment cau…sed by the weight, is changed to an electrical signal to run the display or other control devices. (MORE)
A transducer (trans = across, duce = to lead) is a device that converts one form of energy into another. A microphone converts sound waves into electrical signals. Others would be accelerometers, loudspeakers. An oscillator on the other hand, generates a signal without there being an input signa…l. These are two different things. (MORE)
TRANSDUCER is a device converts one form of energy into other forms sensor it is device any form into electrical form my point of view ,all the sensors are transducers ,but all the transducers are not sensors
Transducer is a device which converts one quantity in to another quantity........... Mostly we are using electrical transducers. That converts physical quantity in to electrical quantity. Transducers enables us to measure the physical quantity. Also they are employed in the sensors too.
this transducer converts the physical phenomena into electrical output and vice versa. Kunal Kumar Singh
vector representing a change in position of a body or point with respect to a reference point, Displacement may be linear or angular.
A: Some material have the property of a capacitor and this property can be varied by outside forces making it a transducer
Transducers is used to convert physical quantities like temperature, vibration, height, etc., to electrical signal (digital). Transducers are nowadays used mostly in all areas like defence, radars, space crafts, etc.,
Capacitive sensors are used mainly to detect proximity, usually that of people. The operating principle is that the capacitance of the capacitor varies as material comes between the two plates of the capacitor, and you can determine the presence of something via the measurement of the capacitance.
An transducer converts one form of energy into another. eg. door bell(electrical energy - sound energy) An actuator transforms electrical energy into mechanical energy. eg. motor An actuator is essentially a transducer but a transducer need not be an actuator.
A transducer is used in measuring the levels of fluids in an open or contained environment. It is a secondary piece of equipment that is used along with the equipment to generate and receive the ultra sonic wave pulse. A voltage pulse is sent to the transducer and the time it takes to receive the re…flected return of the pulse is calculated by the receiver and converted into a level that is shown on the screen of the receiver. This is one use of a transducer. (MORE)
thermistor is one of the example for thermoelectric transducer and we can say this is the worst topic of the instrumentation . its better to not study.............................................................................................................
Transformer: Converts one electrical quaintly to another electrical quantity. Usually to convert the potential difference of an alternating current to another potential difference while maintaining most of the power. However transformers can be used for Impedance matching and even current conversion… as well. For example a transformer can be used to connect many 8 ohm loud speakers to one 8 ohm amplifier without affecting the load on the amplifier. Transformers only work with AC however the term "DC transformer" is also some times used to describe a DC-DC converter module. Transducer: converts a physical quantity into an electrical quantity (in Electrical Engineering). This means that anything in the physical nature besides a few things such as mass can be converted into some measurable electrical quaintly in the form of electrical potential, impedance, capacitance, inductance time or current. Mass is usually determined by means of weighing. The weight is measured and then converted in to an equivalent mass by means of electronic calibration. Mass for example is the quantity of matter, A strain gauge or load cell transducer cannot measure the quantity of matter directly. Therefore they measure the force of gravity that exist between the earth and that object under test. Thus we measure the weight and not the mass. Therefore not all physical quantities can practically be converted to an electrical quantity. Displacement can be measured with an LVDT while distance is not measured with a transducer but in the case of laser distance measurement or movement detectors the transducer element is a optical transducer such as a photo diode or photo transistor or CCD. Not all quantities that is electronically measurable is done by means of a transducer to sense that quantity directly but indirect methods are often used. Like speed or distance can also be done by phase or frequency analysis of radio waves. In the case of speed, the Doppler radar is not a transducer. But the RF antenna is, because it converts electromagnetic waves to electric fields that can be received by the instrument. The transducer is purely the element responsible for converting the one physical quantity to another. One must be careful for not confusion transducer with instrument. There are not much hard and fast rules to make sure about that definition. For example: A load cell is a transducer. But we get digital load cells with complicated digital circuits inside them with calibration and all, it is still a transducer regardless. We get a pressure gauge with a user interface such as a display built in and it is still a transducer. But a weighing scale with a user interface is an instrument and not a transducer, the load cell or strain gauge inside is the transducer. A Doppler camera for measuring traffic speed is not a transducer, it is an instrument but the antenna it uses is a transducer. If there is a hard and fast rule one could define it with it would be something like this: the smallest component that the instrument can be broken down to (disassembled to) that can convert a physical quantity to and electrical quantity is a transducer. Some other uncertainties: Some definitions may consider a transducer as device that convert one form of physical energy to another, however in electrical engineering we often do not require energy to be converted and we only need a transducer to purely convert any kind of quantity into a electrically measurable characteristic such as impedance, capacitance, inductance that might have nothing to do with energy conversion. Here are some examples of transducers: Antenna - converts electromagnetic waves into electric current and vice versa Cathode ray tube (CRT) - converts electrical signals into visual form Fluorescent lamp, light bulb - converts electrical power into visible light Magnetic cartridge - converts motion into electrical form Photodetector or photoresistor or light dependent resistor (LDR) - converts changes in light levels into resistance changes Tape head - converts changing magnetic fields into electrical form Hall effect sensor - converts a magnetic field level into electrical form only Disk read-and-write head - converts electrical digital signal into magnetic fields . pH probes Electro-galvanic fuel cell Hydrogen sensor Electromechanical (electromechanical output devices are generically called actuators): Electroactive polymers Galvanometer Microelectromechanical systems Rotary motor, linear motor Vibration powered generator Potentiometer when used for measuring position Load cell - converts force to mV/V electrical signal using strain gauge Accelerometer Strain gauge String potentiometer Air flow sensor Tactile sensor Loudspeaker, earphone - converts electrical signals into sound (amplified signal â magnetic field â motion â air pressure) Microphone - converts sound into an electrical signal (air pressure â motion of conductor/coil â magnetic field â signal) Pickup (music technology) - converts motion of metal strings into an electrical signal (magnetism â electricity (signal)) Tactile transducer - converts electrical signal into vibration ( signal â vibration) Piezoelectric crystal - converts solid-state electrical modulations into an electrical signal (vibration â electrical current â signal) Geophone - converts a ground movement (displacement) into voltage (vibrations â motion of conductor/coil â magnetic field â signal) Gramophone pickup - (air pressure â motion â magnetic field â signal) Hydrophone - converts changes in water pressure into an electrical form Sonar transponder (water pressure â motion of conductor/coil â magnetic field â signal) Laser diode, light-emitting diode - converts electrical power into forms of light Photodiode, photoresistor, phototransistor, photomultiplier tube - converts changing light levels into electrical form Electrometer Resistance temperature detector (RTD) Thermocouple Peltier cooler Thermistor (includes PTC resistor and NTC resistor) (MORE)
no... generator cannot be a transducer. Transducer is a device that converts one type of energy into another. Whereas generator is a device which convert any form of energy into electrical energy..
A Flow Transducer is also known as a flow senser. A flow senser is used to sense the flow rate a fluid flows or flow logger to record the flow of the fluids that run through them.
An electronic device that will convert some form of energy produced by a physical stimulus to an electrical analogue of the stimulus can be mentioned as a transducer. Among the most frequent examples there are microphones, loudspeakers, thermostats, position and pressure sensors, antenna and therm…ometers. Even photocells, LEDs (Light Emitting Diodes), and even common light bulbs are transducers, although they are not generally thought as transducers. Since physical changes (heat, sound, pressure etc.) can be converted into electrical signals with transducers, they can be also used as sensors. (MORE)
What are the basic requirement of a transducer? Ans The basic requirements of a transducer are (i) Ruggedness It should be capable to withstand overloads (ii) Linanty Its input-output characteristic should be linear (iii) Repeatability It should give same output for the same inp…ut, if applied again and again (iv) High output quality The output should have high signal noise ratio (v) No hysterisis It should not give any hysterisis effect, when varied from low to high value or vice-versa (MORE)
One is where a man becomes a woman and the other is where a woman becomes a man
The broad definition of a transducer is a device which converts mechanical force into an electrical.
Technically, a transducer is defined as a device, which converts other sources of energy such as heat, mechanical, pressure etc. into electrical energy, i.e., the output of a transducer is always electrical energy. Since, a speaker converts electrical energy into sound energy, it is not a transducer…. (MORE)
Sensor Technology LTD, a Canadian based company produces transducers. Additionally Sensor Technology LTD also produces custom acoustic sensors, hydrophones and piezoloelectrics.
These convert pressure into voltage. When certain crystals are compressed or stretched, they exhibit a voltage across their faces, which can be utilised for various applications. The simplest example is an inexpensive 'crystal' phonocartridge: when the attached stylus vibrates in the grooves of a re…cord, the crystal creates variations in voltage which can be amplified using an amplifier which then produces sound via a loudspeaker. These crystals also work the other way around, compressing or expanding when voltages are applied across their faces. This is the principle behind, for example, ultrasonic cleaners -high-frequency voltages applied across the crystal results in ultrasonic vibrations. (MORE)
A transducer is an electronic device that measures something --voltage, temperature or in this case torque. Torque is the forceapplied to twist something, like the twisting one does to tighten ascrew, bolt or jar lid. So, a torque transducer is an electronic device that measures theamount of torque… being applied to something. (MORE)
Transducer is commonly implies the use of a sensor or detector.This is used world wide.The purpose for the use of transducer is sensor and detector. Thisis a device that converts energy.