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Cutler-Hammer Instructions for 36" Wide Vacuum-Break
Cutler-Hammer Instructions for 36" Wide Vacuum-Break

... really two coils in series, with a connection to their common point. Both coils are encapsulated in one environmentally-immune coil shell, which also contains a full-wave silicon diode rectifier. An AC or DC source can be connected to terminals A and B on the coil shell. When an AC source is applied ...
Negative Rail Input, Rail-to-Rail Out, Precision, 850
Negative Rail Input, Rail-to-Rail Out, Precision, 850

... and simulation. (B) Not tested in production; limits set by characterization and simulation. (C) Typical value only for information. This slew rate is the average of the rising and falling time estimated from the large-signal bandwidth as: (VP / √2) · 2π · f–3dB. ...
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Microphone Measurements, Standards, and Specifications

... determine if what is presented is actual measured data or an artist’s representation of the measured data. Frequency response data should always state the physical measuring distance so that an assessment of proximity effect in directional microphones can be correctly made. If no reference is made, ...
Product Folder: SN74LVC04A, Hex Inverter
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... API exclusive features include a LoopTracker LED that varies in intensity with changes in the input signal. A red/green bi-color alarm status LED (two on the API 1720 G) visually indicate alarm status. These LEDs provide a quick visual picture of your process at all times. Output Test/Unlatch API’s ...
“Investigation of Photodetector Optimization in Reducing Power
“Investigation of Photodetector Optimization in Reducing Power

... because it could provide cost-effective, safe, fast and real-time physiological assessment in a combat injured soldier. Consequently, there is a need to develop a reliable, batterypowered, wearable pulse oximeter to acquire and process photoplethysmographic (PPG) signals using an optimized sensor co ...
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... and process an unbalanced load flow algorithm based on that model together with telemetered real-time data recovered from the network. FDIR can operate in manual or automatic mode. In manual mode, post fault, the system will recommend the switching steps required to isolate the minimum faulty line s ...
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... In the series motor, increase in load is accompanied by increases in the armature current and mmf and the stator field flux (provided the iron is not completely saturated). Because flux increases with load, speed must drop in order to maintain the balance between impressed voltage and counter emf; m ...
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Crompton Instruments Protector Trip Relays

... relay will operate to prevent damage to the power asset. Designed to suit a wide variety of applications the range offers both traditional and technologically advanced products, from single parameter units through to multifunctional microprocessor based protection relays. This versatile range featur ...
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Non-invasive assessment of atrial fibrillation (AF)

... for minor variations in the electrical axis which occur during the respiratory cycle. As a result, the large, spurious residuals, relatively often observed when straightforward average beat subtraction is used, are far less common and the resulting signal with atrial fibrillation is more accurate. T ...
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... The AD9984A includes a 170 MHz triple ADC with an internal reference, a PLL, and programmable gain, offset, and clamp control. The user provides only a 1.8 V power supply and an analog input. Three-state CMOS outputs can be powered from 1.8 V to 3.3 V. The AD9984A on-chip PLL generates a sample cloc ...
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... designed for clock and data distribution. The input is reproduced at two differential outputs. The differential input can be adapted to accept single-ended inputs by applying an external reference voltage. The MAX9320B features ultra-low propagation delay (208ps), part-to-part skew (20ps), and outpu ...
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... (IEC61000-4-2 Level 4, Air Discharge) (traditional Schottky ±8 kV HBM ) Much higher avalanche power rating for ruggedness and high reliability ( traditional Schottky 30mJ) Large safe operating area (SOA) with maximum TJ of 150°C/175 °C provides extra margin for high temperature applications (traditi ...
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... (CMS) experiment of the Large Hadron Collider (LHC) at CERN: this detector must be capable of selecting at front-end level the interesting particle and of providing them continuously to the back-end. This new functionality is required to cope with the improved performances of the LHC when, in about ...
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... An N-bit version of this DAC simply consists of 2N equal resistors in series and 2N switches (usually CMOS), one between each node of the chain and the output. The output is taken from the appropriate tap by closing just one of the switches (there is some slight digital complexity involved in decodi ...
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651C Pressure Controller Operation and Maintenance Manual
651C Pressure Controller Operation and Maintenance Manual

... incidental charges with the MKS sales representative or distributor from which the equipment was purchased or, in the case of a direct purchase from MKS, with the MKS home office in Andover, Massachusetts, USA. This warranty does not apply to any equipment which has not been installed and used in ac ...
Negative Rail Input, Rail-to-Rail Output, Precision, 850
Negative Rail Input, Rail-to-Rail Output, Precision, 850

... f = 10 MHz, 100-kHz tone spacing, Vout envelope = 2 VPP (1 VPP per tone) (see Figure 61) ...
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Pulse-width modulation



Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.
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