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... waveform for all the 9 Bi-directional Switches from „SRr‟ to „SBb‟(MRr to MBb) with the maximum voltage transfer ratio „q‟ =0.866. Fig.12. shows the Input waveform for „q‟=0.866 and Amplitude =325.26V related to „r‟ Phase. The Output Voltage and current waveforms in „r‟ Phase for „q‟=0.866 as shown ...
Distributed I/O SIMATIC ET 200
Distributed I/O SIMATIC ET 200

... more quickly and compactly. Expansions are easily possible through the subsequent adding of terminal modules. With their modular terminal design (10 mm²) the latter also do away with the distribution wiring otherwise required. Through the permanent wiring and the hot swapping function (disconnection ...
Instrument Transformers
Instrument Transformers

... • Available for voltage range from 72.5 kV up to 300 kV and full current range of 0.5 A up to 5,000 A • Comparably smaller footprint as a consequence of combining the voltage and current-sensing functions into one unit • Exceptional control of internal and external insulation stresses through ...
MAX44264 Ultra-Low Power Op Amp in a Tiny 6
MAX44264 Ultra-Low Power Op Amp in a Tiny 6

... C2 N.C. No Connection. Not internally connected. Applications Information Ground Sensing The common-mode input range of the MAX44264 extends down to ground, and offers excellent commonmode rejection. These devices are guarante ed not to undergo phase reversal when the input is overdriven. Power Supp ...
ADP1823 数据手册DataSheet 下载
ADP1823 数据手册DataSheet 下载

IMH23
IMH23

... VCE(sat) =40mV at IC / IB=50mA / 2.5mA, makes these transistors ideal for muting circuits. 4) These transistors can be used at high current levels, IC=600mA. Inner circuit 5) Built-in bias resistors enable the configuration of an inverter circuit without connecting external input resistors (see equ ...
CHAPTER 4 BIPOLAR JUNCTION TRANSISTORS (BJTs)
CHAPTER 4 BIPOLAR JUNCTION TRANSISTORS (BJTs)

... In saturation region, it behaves as a closed switch with a small resistance RCEsat The saturation IV curve can be approximated by a straight line intersecting the vCE axis at VCEoff The saturation voltage VCEsat  VCEoff+ICsatRCEsat VCEsat is normally treated as a constant of 0.2 V for simplici ...
PowerFlex 700 Adjustable Frequency AC Drive – Frames 0…6
PowerFlex 700 Adjustable Frequency AC Drive – Frames 0…6

... ATTENTION: Risk of injury or equipment damage exists. DPI or SCANport host products must not be directly connected together via 1202 cables. Unpredictable behavior can result if two or more devices are connected in this manner. ATTENTION: The drive start/stop/enable control circuitry includes solid ...
FSQ0565RS/RQ Green-Mode Fairchild Power Switch (FPS™) for Quasi-Resonant Operation -
FSQ0565RS/RQ Green-Mode Fairchild Power Switch (FPS™) for Quasi-Resonant Operation -

... switching frequency. The FSQ-series is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for quasi-resonant operation and Alternating Valley Switching (AVS). The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Lea ...
Capacitor unbalance protection for blocks in double
Capacitor unbalance protection for blocks in double

... The shunt capacitor banks are usually constructed of capacitor units, and the units contain capacitor elements. There are constructions of the bank where fuses are connected inside a capacitor unit, in series with an element or a group of elements. The fuse is connected in series with the element th ...
ADP3181 - uri=media.digikey
ADP3181 - uri=media.digikey

... buck-switching regulator controller optimized for converting a 12 V main supply into the core supply voltage required by high performance Intel processors. It uses an internal 6-bit DAC to read a voltage identification (VID) code directly from the processor, which is used to set the output voltage. ...
US 6545450 - Santangelo Law Offices
US 6545450 - Santangelo Law Offices

... smaller devices and potential speed at a given voltage. 15 There may be many more important trade-off considerations BACKGROUND OF THE INVENTION for the designers in evaluating microprocessor design. The present invention generally relates to the area of The evaluation of microprocessor consideratio ...
Voltage recovery after unbalanced and balanced voltage dips in
Voltage recovery after unbalanced and balanced voltage dips in

... voltages [1], [2]. Voltage dips are due to short-duration increases in current elsewhere in the power system. The main causes of voltage dips are faults, motor starting, and transformer energizing. A voltage dip at the terminals of equipment may lead to maloperation of the equipment. Most maloperati ...
BLF Series - Oriental Motor
BLF Series - Oriental Motor

ADP1829 数据手册DataSheet 下载
ADP1829 数据手册DataSheet 下载

... ranging from 1.0 V to 24 V. Each controller can be configured to provide output voltages from 0.6 V to 85% of the input voltage and is sized to handle large MOSFETs for point-of-load regulators. The two channels operate 180° out of phase, reducing stress on the input capacitor and allowing smaller, ...
AP7333-12SRG-7 Datasheet
AP7333-12SRG-7 Datasheet

... factor of only 12.5 percent, enabling power savings by putting much of the baseband circuitry into standby mode in between transmit cycles. In baseband circuits, the load often transitions virtually instantaneously from 100µA to 100mA. To meet this load requirement, the LDO must react very quickly w ...
Analog Dialogue Volume 48 Number 2
Analog Dialogue Volume 48 Number 2

... performance has also helped MEMS accelerometers and gyroscopes find their way into many different industrial systems. Some of these applications offer lower-cost alternatives to present products and services, while others are integrating inertial sensing for the very first time. Vibration monitoring ...
mv controller - Siemens Industry, Inc.
mv controller - Siemens Industry, Inc.

AL8812 Description Pin Assignments
AL8812 Description Pin Assignments

... Supply Current (VCC = 5.0V to 40V, CT =1.0nF, Pin 7 = VCC, VPin 5 > Vth Pin 2 ...
Loop Selective Direction Measurement for Distance Protection
Loop Selective Direction Measurement for Distance Protection

... The example below will be used to show the importance of loop selective direction measurement, as described above and used in Siemens distance relays 7SA522 and 7SA6. For comparison the same fault will also be applied to a relay using negative sequence based direction measurement, which is the only ...
PS9332L, PS9332L2 Data Sheet
PS9332L, PS9332L2 Data Sheet

... output side might affect the photocoupler’s LED input, leading to malfunction or degradation of characteristics. (If the pattern needs to be close to the input block, to prevent the LED from lighting during the off state due to the abovementioned coupling, design the input-side circuit so that the b ...
BD8311NUV
BD8311NUV

... (η: Efficiency, ∆IL: Output ripple current, f: Switching frequency) As a guide, inductor ripple current should be set at about 20 to 50% of the maximum input current. * Current over the coil rating flowing in the coil brings the coil into magnetic saturation, which may lead to lower efficiency or ou ...
Short-circuit current ratings 3MB
Short-circuit current ratings 3MB

... • Print the Notes pages and read them as you view the presentation in the “Slide Show” view. In this way you see the slides in large format and have animation (when available) ...
MAX921–MAX924 Ultra Low-Power, Single/Dual
MAX921–MAX924 Ultra Low-Power, Single/Dual

Methods for extra-low voltage transcranial direct current stimulation
Methods for extra-low voltage transcranial direct current stimulation

... 10–20 min), and a fade-out phase. The voltage needed to ramp up current and maintain stimulation depends on the impedance across the body and the electrodes. Skin (scalp), skull, CSF, and brain tissue contribute to body impedance, with skin impedance known to change depending on current intensity an ...
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Stepper motor



A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.Switched reluctance motors are very large stepping motors with a reduced pole count, and generally are closed-loop commutated.
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