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Buletin Stiintific - UPB - Seria C - numar 1 - 2010
Buletin Stiintific - UPB - Seria C - numar 1 - 2010

... It is very well known that the CANDU® reactor has positive Coolant Void Reactivity (CVR), which is an important criticisms about CANDU. Recent innovations based on using of a thin absorbent Hafnium shell in the central bundle element were successfully been applied to the Advanced CANDU Reactor (ACR™ ...
Figure 1 - Texas Instruments
Figure 1 - Texas Instruments

... When the individual cell voltages of cell simulator is increased above the over-voltage protection (OVP) threshold of the device, the bq7718 Cout pin (active high output drive) is commanded from low to high. The timer provides a constant time to prevent false trips of the of the OUT driver. When the ...
Photologic® Slotted Optical Switch
Photologic® Slotted Optical Switch

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Photo electric

... and from which electrons are emitted is called the cathode. The electrons are collected at another metal surface called the anode. The cathode and anode are in vacuum so that electrons can flow without collisions. A voltage V is applied between the cathode and anode, and the current measured by a se ...
RA NGER : VIKING
RA NGER : VIKING

... Drive, Coupling and Auxiliary Coupling. The VFO frequency control, Final Plate tuning and Buffer tuning dials are located on the VFO dial escutcheon . TVI SHIELDING AND FILTERING-Completely TVI Sup­ pressed, the "Ranger" cabinet is sealed electrically, using flexible monel braid on the inside of the ...
Electronic Soft Starters
Electronic Soft Starters

... and supply giving only unsynchronised on-off control  No control over inrush currents or torque surge at start up  Very rapid acceleration of load with large transient forces placed on drive train and electrical system ...
Low Dropout 1 Ampere Linear Regulator Family
Low Dropout 1 Ampere Linear Regulator Family

... short circuit during start-up. If the capacitance is too large, the output voltage will not come into regulation during the initial TON period and the UCC381 will enter pulsed mode operation. The peak current limit, TON period, and load characteristics determine the maximum value of output capacitor ...
Triple Differential Transceivers (Rev. A
Triple Differential Transceivers (Rev. A

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SP60 - Tundra Process Solutions

... The SP60 sends a signal from the electronic circuitry to excite a patented piezo element in the probe. This causes the fork to vibrate at a frequency of 350 Hz. If the fork is covered by material, the change in vibration is detected by the circuitry which causes the relay to change state after a one ...
User's Model 701922
User's Model 701922

... Operation of this product in a residential area may cause radio interference in which case the user is required to correct the interference. Complying standards EN61326 ...
GF2211111118
GF2211111118

... that occurs during operation in the system in order to avoid insulation failures[6]. Besides that we must assess the low amplitude high oscillatory switching voltage and current, which can generate high over voltage at the windings of the transformer[7,8] when its natural frequency matches with tran ...
The EM technician role over the last couple years has led each of
The EM technician role over the last couple years has led each of

... Alaska Sea Grant, Marine Advisory Program for the journal Pacific Fishing, June 2001. AC POWER AC (120V) current must alternate between two points making a circuit. Coming from the power source is the ‘hot’ wire, which normally has black insulation. Returning is the neutral or ‘grounded’ conductor w ...
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Drive Circuits

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Detailed Specifications

Circuits - Single-Chip Frequency Converter
Circuits - Single-Chip Frequency Converter

... useful in the 20-40 MHz range, but the same method could be used with overtone crystal oscillators for even higher output frequencies. The doubling is achieved by feeding the LO from pin 7 into the mixer. The output is 2 x f (where f is the oscillator fundamental frequency), while the difference fre ...
Lecture 2 - Auburn University
Lecture 2 - Auburn University

AP7331  300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR
AP7331 300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR

... The output capacitor is required to stabilize and help transient response for LDO. The AP7331 is stable with very small ceramic output capacitors. The recommended capacitance is from 1μF to 4.7μF, Equivalent Series Resistance (ESR) is from 10mΩ to 200mΩ, and temperature characteristic is X7R or X5R. ...
Mathematical Model for Computing Maximum Power Output of a PV
Mathematical Model for Computing Maximum Power Output of a PV

... 3.2 Operation temperature dependence on the I–V characteristics and maximum power output It is known that the cell operation temperature has some bearing on the I–V characteristics and maximum power output (Pmp ) of a solar cell. In order to exactly quantify the effect of temperature on Pmp at the s ...
Introduction - GEOCITIES.ws
Introduction - GEOCITIES.ws

... rise to DC voltage and current offsets that are amplified along with the desired signal. The DC level at the output should be reduced to nearly 0V so that it does not degrade the performance of the level detector circuit (see 3.0 Diode Detector Circuit). One method of achieving this is to apply a sm ...
4-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 16-Lead TSSOP AD7924-KGD
4-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 16-Lead TSSOP AD7924-KGD

... the falling edge of CS and conversion is initiated at this point. There are no pipeline delays associated with the part. The AD7924-KGD uses advanced design techniques to achieve very low power dissipation at maximum throughput rates. At maximum throughput rates, the AD7924-KGD consumes 2 mA maximum ...
SEMESTER-I - National Institute of Technology Mizoram
SEMESTER-I - National Institute of Technology Mizoram

... Introduction to the theory of basic two pole machine applicable to DC machines, 3-ph induction machines and synchronous machine. Kron’s primitive Machine. Need of modeling, Introduction to modeling of electrical machines, voltage and torque equations. LECTURES-7 Concept of Transformation: Change of ...
MAX14777 Quad Beyond-the-Rails
MAX14777 Quad Beyond-the-Rails

... signal range for all switches when pin SEL35 is high. When pin SEL35 is low, the analog signal range reduces to -15V/+15V signal range, also resulting in a lower VCC supply current. SEL35 trades off high-side analog signal range for supply current. Each switch has a separate control input to allow i ...
10 Universal Signal Inputs CAN Controller
10 Universal Signal Inputs CAN Controller

AAT3223 数据资料DataSheet下载
AAT3223 数据资料DataSheet下载

... over a wide range of capacitor ESR, thus it will also work with some higher ESR tantalum or aluminum electrolytic capacitors. However, for best performance, ceramic capacitors are recommended. The value of COUT typically ranges from 0.47µF to 10µF; however, 1µF is sufficient for most operating condi ...
Lecture Notes EEE 360
Lecture Notes EEE 360

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Buck converter



A buck converter is a voltage step down and current step up converter.The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.
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