Experiment Title
... The voltage control approach only allows for movement up or down the torque vs. shaft speed curve at a speed where the torque peak will occur (constant speed). This happens as a result of only controlling the magnitude of voltage and not the frequency at which it may activate the rotor in the induct ...
... The voltage control approach only allows for movement up or down the torque vs. shaft speed curve at a speed where the torque peak will occur (constant speed). This happens as a result of only controlling the magnitude of voltage and not the frequency at which it may activate the rotor in the induct ...
Synchronous Machine
... Machines with large value of flux per pole have small number of turns per phase and therefore double layer bar windings are used High voltage machines and machines with small value of flux per pole have large number of turns per phase and therefore multi turn coils are used In modern practice, ...
... Machines with large value of flux per pole have small number of turns per phase and therefore double layer bar windings are used High voltage machines and machines with small value of flux per pole have large number of turns per phase and therefore multi turn coils are used In modern practice, ...
Rectangular Wave Delta Modulation Buck Regulator for Voltage Regulator Modules
... applied and successfully implemented onto a class-D audio amplifier [4-5] of which 92% maximum power efficiency has been achieved. In scenario of efficiency, ease of control, simple and compact structure, the RWDM is seen as another promising technique to be implemented in the control loop of a buck ...
... applied and successfully implemented onto a class-D audio amplifier [4-5] of which 92% maximum power efficiency has been achieved. In scenario of efficiency, ease of control, simple and compact structure, the RWDM is seen as another promising technique to be implemented in the control loop of a buck ...
control of air flow rate of single phase induction motor for
... The base speed of the motor is proportional to supply frequency and is inversely proportional to the number of poles. So, by changing the supply frequency; the motor speed can be changed. Above base speed, this ratio will decrease when constant voltage (usually motor rated voltage) is applied to the ...
... The base speed of the motor is proportional to supply frequency and is inversely proportional to the number of poles. So, by changing the supply frequency; the motor speed can be changed. Above base speed, this ratio will decrease when constant voltage (usually motor rated voltage) is applied to the ...
AN OVERVIEW OF UNITY POWER FACTOR POWER SUPPLY
... voltage increases, Fig.2. Thus, during operation at higher voltage, lower loss and higher efficiency, are expected, due to the reduced I2R loss, Figs 3 and 4. The supply frequency does not affect significantly the UPFPS performance, since there is no transformer employed, to justify iron losses. Nev ...
... voltage increases, Fig.2. Thus, during operation at higher voltage, lower loss and higher efficiency, are expected, due to the reduced I2R loss, Figs 3 and 4. The supply frequency does not affect significantly the UPFPS performance, since there is no transformer employed, to justify iron losses. Nev ...
Resonance Circuits and Applications
... you place a conductor across the back of your TV on the terminals where the signal comes into the set, do you think you would get much of a TV picture? I hope you said no. A short circuit on a TV antenna would stop all signals from entering the TV set and you would get squat! A series resonant circu ...
... you place a conductor across the back of your TV on the terminals where the signal comes into the set, do you think you would get much of a TV picture? I hope you said no. A short circuit on a TV antenna would stop all signals from entering the TV set and you would get squat! A series resonant circu ...
exp05_IOBoard
... •When the length of the traces changes, the resistance changes. •It is a small change of resistance so we use bridge circuits to measure the change. •The change of the length is the strain. •If attached tightly to a surface, the strain of the gauge is equal to the strain of the surface. •We use the ...
... •When the length of the traces changes, the resistance changes. •It is a small change of resistance so we use bridge circuits to measure the change. •The change of the length is the strain. •If attached tightly to a surface, the strain of the gauge is equal to the strain of the surface. •We use the ...
Supplemental Material 1
... Self-healing is a phenomenon where in the event the electrodes are exposed to each other instead of the capacitor shorting, the capacitor repairs itself. This repairing of the capacitor is due to the thinness of the foils used. In a film/foil capacitor when the foils are exposed to each other, the f ...
... Self-healing is a phenomenon where in the event the electrodes are exposed to each other instead of the capacitor shorting, the capacitor repairs itself. This repairing of the capacitor is due to the thinness of the foils used. In a film/foil capacitor when the foils are exposed to each other, the f ...
Design and Simulation of Cascaded H
... equipment that is being supplied. What is good power quality for an electric motor may not be good enough for a personal computer. Usually the term power quality refers to maintaining a sinusoidal waveform of bus voltages at rated voltage and frequency [2]. The waveform of electric power at generati ...
... equipment that is being supplied. What is good power quality for an electric motor may not be good enough for a personal computer. Usually the term power quality refers to maintaining a sinusoidal waveform of bus voltages at rated voltage and frequency [2]. The waveform of electric power at generati ...
A Novel 20Hz Power Injection Protection Scheme for Stator Ground
... network operation. The great social and economic benefits produced by pumped storage plants have been recognized by more and more countries. It puts forward higher requirements for the protective relaying because of flexible operation mode. The Sub-synchronous overcurrent protection, underpower prot ...
... network operation. The great social and economic benefits produced by pumped storage plants have been recognized by more and more countries. It puts forward higher requirements for the protective relaying because of flexible operation mode. The Sub-synchronous overcurrent protection, underpower prot ...
HMC430LP4 数据资料DataSheet下载
... Low noise MMIC VCO w/Buffer Amplifier for C-Band applications such as: ...
... Low noise MMIC VCO w/Buffer Amplifier for C-Band applications such as: ...
Film Capacitors – Power Factor Correction - MKK440-D-56
... nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our products for a particular customer application. As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar with them than the customers themse ...
... nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our products for a particular customer application. As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar with them than the customers themse ...
No-Polarity Interruption Technology of Circuit Breakers for High
... With photovoltaic power generation facilities for applications other than residential use, the voltage is being increased along with the increase in system capacity, and there is a demand for non-polarity circuit breakers that are capable of safely interrupting currents in the opposite direction and ...
... With photovoltaic power generation facilities for applications other than residential use, the voltage is being increased along with the increase in system capacity, and there is a demand for non-polarity circuit breakers that are capable of safely interrupting currents in the opposite direction and ...
Description Primary Switched Power Supplies Defi nition of the Output Data
... parallel. Up to tree units of the same type may be operated in parallel to increase the output power. Their individual PAcontacts have to be interconnected so that in the event of a fault the overvoltage protection circuit integrated in one of the units also switches off the paralleled power supplie ...
... parallel. Up to tree units of the same type may be operated in parallel to increase the output power. Their individual PAcontacts have to be interconnected so that in the event of a fault the overvoltage protection circuit integrated in one of the units also switches off the paralleled power supplie ...
![[PDF]](http://s1.studyres.com/store/data/008779542_1-17d757cb86c7ceda4d8e0cdc30e41d0a-300x300.png)
[PDF]
... is due to starting of large loads either on the affected site or by a consumer on the same circuit and the second one is faults on other branches of the network. When heavy loads are started, such as large drives, their starting current can be many times to the normal running current [2]. Since the ...
... is due to starting of large loads either on the affected site or by a consumer on the same circuit and the second one is faults on other branches of the network. When heavy loads are started, such as large drives, their starting current can be many times to the normal running current [2]. Since the ...
Why Use Temperature Transmitters Instead of Direct Wiring? Transmitters vs. Direct Wiring
... universal transmitters to precisely match a particular sensor. Even though sensors are designed to have a high degree of conformance to an established curve, each one (even precision sensors) will vary slightly from their stated specification. In the past, transmitters assumed an accurate sensor mea ...
... universal transmitters to precisely match a particular sensor. Even though sensors are designed to have a high degree of conformance to an established curve, each one (even precision sensors) will vary slightly from their stated specification. In the past, transmitters assumed an accurate sensor mea ...
PowerPoint
... “Oh my god that was horrible please don’t make me memorize all that.” “none of this makes sense please be thurough in lecture” “What significance does Q2=L/R2C have in ...
... “Oh my god that was horrible please don’t make me memorize all that.” “none of this makes sense please be thurough in lecture” “What significance does Q2=L/R2C have in ...
IPoD coil
... • A single xIPoD session will drive several IPoDs using the same RS485 link • Automatic detection of the types of IPoD present on the RS485 link (IPoD coil, 6-Channel IPoD coil, IPoD piezo) • Synchronization possible of all the parameters of the IPoDs present (if identical). ...
... • A single xIPoD session will drive several IPoDs using the same RS485 link • Automatic detection of the types of IPoD present on the RS485 link (IPoD coil, 6-Channel IPoD coil, IPoD piezo) • Synchronization possible of all the parameters of the IPoDs present (if identical). ...
Today`s agenda: Measuring Instruments: ammeter, voltmeter
... For a “pre-built” RC circuit that lets you both charge and discharge (through separate switches), download this file, put it in your “my documents” folder, run the circuit construction applet (link above), maximize it, then select “load” in the upper right. Click on the “capacitor_circuit” file and ...
... For a “pre-built” RC circuit that lets you both charge and discharge (through separate switches), download this file, put it in your “my documents” folder, run the circuit construction applet (link above), maximize it, then select “load” in the upper right. Click on the “capacitor_circuit” file and ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""