UM0486
... In adjustable speed applications, AC induction motors are powered by inverters. The inverter converts DC power to AC power at the required frequency and amplitude. The inverter consists of three half-bridge units where the upper and lower switches are controlled complementarily. As the power device' ...
... In adjustable speed applications, AC induction motors are powered by inverters. The inverter converts DC power to AC power at the required frequency and amplitude. The inverter consists of three half-bridge units where the upper and lower switches are controlled complementarily. As the power device' ...
Appendix
... transfer theorems, Star-delta transformation, Circuit theory Concepts: Mesh and Nodal analysis. 3. Three Phase Supply Star/delta connections, line and phase voltage/current relations, Three-phase power and its measurement. 4. Basic Instruments Instruments for measurement of voltage, Current, power a ...
... transfer theorems, Star-delta transformation, Circuit theory Concepts: Mesh and Nodal analysis. 3. Three Phase Supply Star/delta connections, line and phase voltage/current relations, Three-phase power and its measurement. 4. Basic Instruments Instruments for measurement of voltage, Current, power a ...
Magnetic Position Sensing in Brushless DC Electric Motors
... operating cost savings can be realized in several areas: • Honeywell Hall-effect sensor ICs are relatively low-cost devices • The low operate and release Gauss levels (at 25 °C ±40 °C) allow the manufacturer to install lower-cost commutation magnetics • These solid-state sensor ICs have no moving ...
... operating cost savings can be realized in several areas: • Honeywell Hall-effect sensor ICs are relatively low-cost devices • The low operate and release Gauss levels (at 25 °C ±40 °C) allow the manufacturer to install lower-cost commutation magnetics • These solid-state sensor ICs have no moving ...
Thermal Handbook - Maxim Integrated
... system may be as simple as an on/off thermostatic controller for room temperature, which activates a heater whenever the temperature drops below a specific threshold. Or it may be a complex fan speed control system that uses measured temperature to adjust the speeds of several fans to ensure adequat ...
... system may be as simple as an on/off thermostatic controller for room temperature, which activates a heater whenever the temperature drops below a specific threshold. Or it may be a complex fan speed control system that uses measured temperature to adjust the speeds of several fans to ensure adequat ...
Mitigation and Analysis of Very Fast Transient over
... Voltages (VFTOs) in a GIS Fast transient over voltages in GIS are mainly due to two reasons 1. Disconnector switch operation 2. Faults between bus bar and enclosure Very fast transient over voltages (VFTOs) occur in Gas Insulated Substation (GIS) due to the operation of the disconnector switch. It h ...
... Voltages (VFTOs) in a GIS Fast transient over voltages in GIS are mainly due to two reasons 1. Disconnector switch operation 2. Faults between bus bar and enclosure Very fast transient over voltages (VFTOs) occur in Gas Insulated Substation (GIS) due to the operation of the disconnector switch. It h ...
View Uploaded Details
... 4) Suspension arrangement provides greater flexibility to the line. The connection at the cross arm is such that insulator string is free to swing in any direction and can take up the position where mechanical stresses are ...
... 4) Suspension arrangement provides greater flexibility to the line. The connection at the cross arm is such that insulator string is free to swing in any direction and can take up the position where mechanical stresses are ...
IMPLEMENTATION OF 4-BIT TWO STEP FLASH ADC
... interface for portable battery mechanical system require analog -to -digital converters and other interface essentials that dissolve the lowest possible power and operate on supply voltages friendly with the digital parts of the system. Also the rate and performance make it attractive to attain high ...
... interface for portable battery mechanical system require analog -to -digital converters and other interface essentials that dissolve the lowest possible power and operate on supply voltages friendly with the digital parts of the system. Also the rate and performance make it attractive to attain high ...
S280-70-2
... to the Form 6 recloser control via control wiring. This wiring also supplies Trip, Close, and Recloser status, and connects to the Recloser Interface (RIF) module to provide isolation for reliable operation. Voltages for metering are connected to the analog input module. Line current flowing through ...
... to the Form 6 recloser control via control wiring. This wiring also supplies Trip, Close, and Recloser status, and connects to the Recloser Interface (RIF) module to provide isolation for reliable operation. Voltages for metering are connected to the analog input module. Line current flowing through ...
Kanthal® Globar® SD Silicon carbide heating elements
... Precautions must be taken to prevent the terminals from overheating, especially if the elements are operating at the higher end of their temperature range or if the roof lining is relatively thin. In most cases a 25 mm (1 in) thick pad of ceramic fiber fit below the support washers will be sufficie ...
... Precautions must be taken to prevent the terminals from overheating, especially if the elements are operating at the higher end of their temperature range or if the roof lining is relatively thin. In most cases a 25 mm (1 in) thick pad of ceramic fiber fit below the support washers will be sufficie ...
BDTIC www.BDTIC.com/infineon E l e c t r i c ...
... Since IC is not known in eq. (4), VCE sat @ IC is also not known, but can be found within few iterations [5]. The ratings of continous DC-collector current are calculated with maximum values for VCE sat to ensure the specified current rating, taken into account component tolerances. ...
... Since IC is not known in eq. (4), VCE sat @ IC is also not known, but can be found within few iterations [5]. The ratings of continous DC-collector current are calculated with maximum values for VCE sat to ensure the specified current rating, taken into account component tolerances. ...
D2 - CubeSat Kit
... interface. SCL2 is normally configured as an I2C clock output. Can also be used as general-purpose I/O. SDA1. I2C1 data. To/from SDA2 (U1.59). Part of the second I2C interface. SDA2 is normally configured as an I2C data input/output. Can also be used as general-purpose I/O. General-purpose I/O. To/f ...
... interface. SCL2 is normally configured as an I2C clock output. Can also be used as general-purpose I/O. SDA1. I2C1 data. To/from SDA2 (U1.59). Part of the second I2C interface. SDA2 is normally configured as an I2C data input/output. Can also be used as general-purpose I/O. General-purpose I/O. To/f ...
High Voltage Products
... further course of opening, this increased pressure initiates a gas flow through the nozzle (3), extinguishing the arc. In this case, the arc energy is used to interrupt the fault current. This energy needs not be provided by the operating mechanism. Major features: • Self-compression interrupter un ...
... further course of opening, this increased pressure initiates a gas flow through the nozzle (3), extinguishing the arc. In this case, the arc energy is used to interrupt the fault current. This energy needs not be provided by the operating mechanism. Major features: • Self-compression interrupter un ...
DLS/CCLRC Cockcroft Institute 2005/6, © N.Marks, 2006
... Cockcroft Institute 2005/6, © N.Marks, 2006 ...
... Cockcroft Institute 2005/6, © N.Marks, 2006 ...
a Complete 14-Bit, 3.0 MSPS Monolithic A/D Converter AD9243*
... The input of the AD9243 is highly flexible, allowing for easy interfacing to imaging, communications, medical, and dataacquisition systems. A truly differential input structure allows for both single-ended and differential input interfaces of varying input spans. The sample-and-hold amplifier (SHA) ...
... The input of the AD9243 is highly flexible, allowing for easy interfacing to imaging, communications, medical, and dataacquisition systems. A truly differential input structure allows for both single-ended and differential input interfaces of varying input spans. The sample-and-hold amplifier (SHA) ...
CALIBRATION DATA-SET OF A SIX COMPONENT INTERNAL
... The following description of the QinetiQ Balance Calibration Machine (BCM) is in origin a text provided to DNW by QinetiQ (and therefore proprietary data). The text has been edited to account for special items concerning DNW balance calibrations. The BCM was designed mainly for the calibration of th ...
... The following description of the QinetiQ Balance Calibration Machine (BCM) is in origin a text provided to DNW by QinetiQ (and therefore proprietary data). The text has been edited to account for special items concerning DNW balance calibrations. The BCM was designed mainly for the calibration of th ...
ADC16DX370 - Texas Instruments
... Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absol ...
... Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absol ...
Manual
... The Constant Current Regulator is a power supply designed for precision operation of airfield lighting. The output current is regulated within +/-1% at any load and for line voltages from +10% to –5% of nominal. The three or five discrete brightness steps conform to FAA standards. The regulator may ...
... The Constant Current Regulator is a power supply designed for precision operation of airfield lighting. The output current is regulated within +/-1% at any load and for line voltages from +10% to –5% of nominal. The three or five discrete brightness steps conform to FAA standards. The regulator may ...
Keysight 423B and 8470B Detectors
... Static discharge can damage the detector element. A 100 pF capacitor (1.2 m [4 ft] of coax cable) charged to 14 volts stores .1 erg, the maximum pulse rating of the detector element. ...
... Static discharge can damage the detector element. A 100 pF capacitor (1.2 m [4 ft] of coax cable) charged to 14 volts stores .1 erg, the maximum pulse rating of the detector element. ...
NTD20N03L27 - Power MOSFET, 20 A, 30 V, N
... 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/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any ...
... 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/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any ...
MAX16025–MAX16030 Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits General Description
... design flexibility as they allow fixed and adjustable thresholds to be selected through logic inputs and provide sequence timing through small external capacitors. These versatile devices are ideal for use in a wide variety of multivoltage applications. As the voltage at each monitored input exceeds ...
... design flexibility as they allow fixed and adjustable thresholds to be selected through logic inputs and provide sequence timing through small external capacitors. These versatile devices are ideal for use in a wide variety of multivoltage applications. As the voltage at each monitored input exceeds ...
Circuit Techniques for On-Chip Clocking and Synchronization Behzad Mesgarzadeh
... Today’s microprocessors with millions of transistors perform high-complexity computing at multi-gigahertz clock frequencies. The ever-increasing chip size and speed call for new methodologies in clock distribution network. Conventional global synchronization techniques exhibit many drawbacks in the ...
... Today’s microprocessors with millions of transistors perform high-complexity computing at multi-gigahertz clock frequencies. The ever-increasing chip size and speed call for new methodologies in clock distribution network. Conventional global synchronization techniques exhibit many drawbacks in the ...
HDE Short Form Product Catalog
... Thank you for your interest in HDE and our products. Our continuous improvement and innovation in the areas of controlling, testing, measuring and recording of electric power has resulted in the development of leading edge products designed to help you provide electric power to your customers safely ...
... Thank you for your interest in HDE and our products. Our continuous improvement and innovation in the areas of controlling, testing, measuring and recording of electric power has resulted in the development of leading edge products designed to help you provide electric power to your customers safely ...
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.