ELG4125: Symmetrical Faults
... momentary power outages but, more important, if a protective action is not taken, can cause permanent damage to transmission equipment such as the transmission line itself and/or the transformer. ...
... momentary power outages but, more important, if a protective action is not taken, can cause permanent damage to transmission equipment such as the transmission line itself and/or the transformer. ...
EXERCISE #1 To measure the tripping time of maximum
... b) When performing the function of short-circuit protection, a threephase current relay will trip instantaneously (times below one second) as soon as the controlled current exceeds the set value. Current values are adjustable. Objective:- Both the values of (overload, short-circuit) current and of d ...
... b) When performing the function of short-circuit protection, a threephase current relay will trip instantaneously (times below one second) as soon as the controlled current exceeds the set value. Current values are adjustable. Objective:- Both the values of (overload, short-circuit) current and of d ...
NJW44H11 - 80 V NPN, 10 A Power Transistor
... ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/ ...
... ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/ ...
Harvesting Energy from the Marine Sediment
... electrodes. The viability of dissolved seawater oxygen as an oxidant for power generation has been established by the use of seawater batteries with cathode energy densities on the order of 0.5 W m-2 in oxic seawater (7). Since sediments on continental margins (<1000 m deep) are typically 2-3% by d ...
... electrodes. The viability of dissolved seawater oxygen as an oxidant for power generation has been established by the use of seawater batteries with cathode energy densities on the order of 0.5 W m-2 in oxic seawater (7). Since sediments on continental margins (<1000 m deep) are typically 2-3% by d ...
Directly-coupled Fee..
... stages because it leaves out one R-C phase shift element. The number of phase shift elements can become critical when your feedback would become positive at some frequency, so you eliminate some phase shift in order to keep it always in the negative region for stability. The direct coupling also hel ...
... stages because it leaves out one R-C phase shift element. The number of phase shift elements can become critical when your feedback would become positive at some frequency, so you eliminate some phase shift in order to keep it always in the negative region for stability. The direct coupling also hel ...
RPR-220PC30N
... Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no respo ...
... Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no respo ...
Document
... notable features of the proposed method are that it completely overcomes the problem of dead time without current polarity detection. These features make it very attractive for low-cost, low-power constant volts per hertz (V/f), open-loop, three-phase AC induction motor applications. ...
... notable features of the proposed method are that it completely overcomes the problem of dead time without current polarity detection. These features make it very attractive for low-cost, low-power constant volts per hertz (V/f), open-loop, three-phase AC induction motor applications. ...
SINGLE PHASE CURRENT SOURCE INVERTER (C.S.I)
... Observation of load and thyristor voltages (for a Cuircuit Source Inverter (C.S.I) 1. Connect a resistive load (50Ω, 4.1 Amp.) on the load. Switch on trigger circuit. Next switch on DC supply to power circuit (about 30V). (If the circuit performs properly a low buzz will be heard from the DC line ch ...
... Observation of load and thyristor voltages (for a Cuircuit Source Inverter (C.S.I) 1. Connect a resistive load (50Ω, 4.1 Amp.) on the load. Switch on trigger circuit. Next switch on DC supply to power circuit (about 30V). (If the circuit performs properly a low buzz will be heard from the DC line ch ...
EUP3020 Dual High-Efficiency 1.5MHz 1A PWM Step-Down DC-DC Converter
... Dropout Operation Each channel of the EUP3020 allows the main switch to remain on for more than one switching cycle and increases the duty cycle while the input voltage is dropping close to the output voltage. When the duty cycle reaches 100%, the main switch is held on continuously to deliver curre ...
... Dropout Operation Each channel of the EUP3020 allows the main switch to remain on for more than one switching cycle and increases the duty cycle while the input voltage is dropping close to the output voltage. When the duty cycle reaches 100%, the main switch is held on continuously to deliver curre ...
Definitions and Measurement of Power Factor
... Reactive power, and Apparent power are applied to steady-state alternating current circuits in which the voltages and currents are non-sinusoidal. Today it is characteristic in most parts of the applications that the current and voltage are nonsinusoidal. The origin of these problems are the followi ...
... Reactive power, and Apparent power are applied to steady-state alternating current circuits in which the voltages and currents are non-sinusoidal. Today it is characteristic in most parts of the applications that the current and voltage are nonsinusoidal. The origin of these problems are the followi ...
EE 1000 Introduction to Electrical Engineering
... A function generator is a tool that produces waveforms at various frequencies and amplitudes. The waveform can be a sine wave, a square wave or a triangle wave. Experiment 5. Connect scope probe to the red lead from the function generator and the ground clamp to the black lead. Turn on the function ...
... A function generator is a tool that produces waveforms at various frequencies and amplitudes. The waveform can be a sine wave, a square wave or a triangle wave. Experiment 5. Connect scope probe to the red lead from the function generator and the ground clamp to the black lead. Turn on the function ...
46th-PS-Draft-Paper-Yardney-M-Air
... started with the work of Leclanche' in the mid to late 1800’s while experimenting with MnO2 electrodes. In the last 10 years metal-air has evolved to include a number of alkaline earth metal anodes which electrochemical equivalent energy densities are well beyond any traditional primary or rechargea ...
... started with the work of Leclanche' in the mid to late 1800’s while experimenting with MnO2 electrodes. In the last 10 years metal-air has evolved to include a number of alkaline earth metal anodes which electrochemical equivalent energy densities are well beyond any traditional primary or rechargea ...
Simulation of Active Filtering Applied to A Computer Centre
... for a different purpose and not related to harmonic voltage type loads. The practical choice of XL is that it should be as small as possible to minimize cost. Furthermore, if the APF can directly force the grid current to be sinusoidal, the voltage at the PCC will have similar characteristics to the ...
... for a different purpose and not related to harmonic voltage type loads. The practical choice of XL is that it should be as small as possible to minimize cost. Furthermore, if the APF can directly force the grid current to be sinusoidal, the voltage at the PCC will have similar characteristics to the ...
NPN Bipolar Transistor for High-Current Switching Applications
... Output Capacitance, Cob -- pF ...
... Output Capacitance, Cob -- pF ...
A 98nW Wake-up Radio for Wireless Body Area Networks
... offset. The common mode input voltage ranges from 300mV to 600mV and the hysteresis ranges from -31mV to +29mV. Power is controlled across process variation using a 7-bit binary-weighted current DAC, similar to the one used in the rectifier, and thick oxide devices are used to reduce power consumpti ...
... offset. The common mode input voltage ranges from 300mV to 600mV and the hysteresis ranges from -31mV to +29mV. Power is controlled across process variation using a 7-bit binary-weighted current DAC, similar to the one used in the rectifier, and thick oxide devices are used to reduce power consumpti ...
Mercury-arc valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.