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Unit 16 Alternating Current
Unit 16 Alternating Current

... Be able to compute peak, RMS, and average values of voltage and current. ...
Starting High Inertia Loads - Rockwell Automation Knowledgebase
Starting High Inertia Loads - Rockwell Automation Knowledgebase

... Wye-Delta starting This reduced voltage starting method is particularly suitable for applications involving long acceleration times and is the most commonly used method for starting high inertia loads. Wye-Delta starters are used with Delta-wound motors that have all six leads brought out to facilit ...
A Differential Switched-Capacitor Amplifier with Programmable Gain
A Differential Switched-Capacitor Amplifier with Programmable Gain

Experiment 2 - Binus Repository
Experiment 2 - Binus Repository

... with the rotor axis and two pole pieces with many teeth. The teeth are staggered to produce many poles. The stator poles of a real stepper motor also has many teeth. The teeth are arranged so that the two phases are still 90° out of phase. This stepper motor uses permanent magnets. Some stepper moto ...
Write your own generic SPICE Power Supplies controller
Write your own generic SPICE Power Supplies controller

STLVDS31B
STLVDS31B

... Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ...
Bip Transistor 25V 700mA VCE(sat);25mV(max.) NPN Single PCP
Bip Transistor 25V 700mA VCE(sat);25mV(max.) NPN Single PCP

... system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for new ...
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DC Motor Reversing

... and a "Rotor" which is the rotating part. Basically there are three types of DC Motor available: ...
Ground zero used to have a strictly negative connotation. But when it
Ground zero used to have a strictly negative connotation. But when it

... Fortunately, much of the newer service literature does include ground location information. Once you’ve found the connection point, there are a couple of things you can do to check ground integrity. One is to attach one lead of a DVOM to battery negative and the other lead to the ground lug, ring te ...
Aalborg Universitet Investigating Pulsed Discharge Polarity Employing Solid-State Pulsed Power Electronics
Aalborg Universitet Investigating Pulsed Discharge Polarity Employing Solid-State Pulsed Power Electronics

Capacitor unbalance protection for blocks in double
Capacitor unbalance protection for blocks in double

... In this case please consult Protecta Co. Ltd. for solution. Calibration of the protection is the task of the commissioning to store the reference values for the neutral point current ∆Iref, and that of the phase current Iphaseref in the memory. For this purpose the function block has a dedicated bin ...
The frequency – domain version of a Norton equivalent circuit
The frequency – domain version of a Norton equivalent circuit

... The frequency, , of a sinusoidal response is the same as the frequency of the sinusoidal source driving the circuit. The amplitude and phase angle of the response are usually different from those of the source. © 2008 Pearson Education ...
MAX8860 低噪声、低压差300mA (确保)稳压器,µMAX封装
MAX8860 低噪声、低压差300mA (确保)稳压器,µMAX封装

... Thermal overload protection limits total power dissipation in the MAX8860. When the junction temperature (TJ) exceeds +170°C, the thermal sensor sends a signal to the shutdown logic, turning off the pass transistor and allowing the IC to cool. The pass transistor turns on again after the IC’s juncti ...
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LM193JAN Low Power Low Offset Voltage Dual

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MAX15059 Evaluation Kit Evaluates: General Description Features

... The EV kit features a jumper to set the output voltage (VOUT/APD) programmability. VOUT/APD is programmed by connecting an external reference voltage source to the CNTRL and SGND PCB pads. Remove the shunt at jumper JU1 to use the programmability feature and apply a reference voltage < 1.2V to the C ...
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KE Low Concentration

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ZLDO485 • 4.85 VOLT ULTRA LOW DROPOUT REGULATOR

... The ZLDO485 provides an output called Low Battery Flag (LBF). Unlike many regulators that only signal that they are falling out of regulation, the LBF output of the ZLDO485 series indicates that the voltage drop across the regulator has fallen to less than typically 300mV and so supply failure is im ...
(DVR) Using Sinusoidal Pulse Width Modulation
(DVR) Using Sinusoidal Pulse Width Modulation

... In the previous section the principle and the operating modes of DVR have been discussed. Now the important thing is to figure out the components that are required for the implementation of DVR. The following steps are used to implement the DVR in injection mode. Step 1: To find out whether there is ...
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Measuring Biased Inductors

BS2, A/D conversion, phototransistors, thermistors, ultrasonic range
BS2, A/D conversion, phototransistors, thermistors, ultrasonic range

... notice two interesting points about successive approximation. The first is that because it always underestimates the correct analog signal, it is possible to choose the “wrong” approximation. 3.1054 is a much closer approximation than 3.086, but it is rejected because it is an overestimate. Techniqu ...
DU36723729
DU36723729

... Transformer-less photovoltaic (PV) inverters offer better efficiency compared to inverters connected to the grid through a transformer providing galvanic isolation. However, in case the transformer is omitted, the generated common-mode voltage greatly influences the leakage current flowing to ground ...
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... The ideal independent voltage and current sources are models. As such, they are subject to limitations. For example, an independent voltage source, that one commonly works with, cannot put-out 1x10320 volts. Neither can an ordinary independent current source put out 4x10765 amps. We must always keep ...
201535 Golf Car Battery Charging Sheet
201535 Golf Car Battery Charging Sheet

... • Apply a current load of twice the Ah rating for 15 seconds and then compare resulting voltage under load to Minimum Voltage Table. For example, the GC2-HD has a 215 Ah rating. 215 x 2 = 430 Amps. To load test the GC2-HD, you should apply 430 Amps to the battery for 15 seconds. ...
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Three-phase electric power



Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same line to ground voltage because it uses less conductor material to transmit electrical power.The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky, Jonas Wenström and Nikola Tesla in the late 1880s.
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