transfer switches - Port of Portland
... The transfer switch shall be completely wired, assembled, and tested by the manufacturer at the factory to ensure compatibility and to completely test the assembly. Provide the transfer switch as shown on the drawings with full load current rating of amperes at 277/480V, 3-phase, 4-wire, 60 Hertz AC ...
... The transfer switch shall be completely wired, assembled, and tested by the manufacturer at the factory to ensure compatibility and to completely test the assembly. Provide the transfer switch as shown on the drawings with full load current rating of amperes at 277/480V, 3-phase, 4-wire, 60 Hertz AC ...
User Manual of Brushless Speed Controller
... Thanks for purchasing our Electronic Speed Controller (ESC). High power system for RC model is very dangerous, please read this manual carefully. In that we have no control over the correct use, installation, application, or maintenance of our products, no liability shall be assumed nor accepted for ...
... Thanks for purchasing our Electronic Speed Controller (ESC). High power system for RC model is very dangerous, please read this manual carefully. In that we have no control over the correct use, installation, application, or maintenance of our products, no liability shall be assumed nor accepted for ...
G. Hassan, D.J. Perreault, and T.A. Keim, “Design of Dual-Output Alternators with Switched-Mode Rectification,” 2003 IEEE Power Electronics Specialists Conference , Acapulco, Mexico, June 2003, pp. 1992-2000.
... rectifier to supply both the high and low voltage buses. One implementation approach that has been explored in the past [3,8,10,11] is illustrated in Fig.4. In the implementation of Fig. 4, a conventional diode bridge rectifier is used to supply the 42V bus. The 14V bus is supplied through a semi-co ...
... rectifier to supply both the high and low voltage buses. One implementation approach that has been explored in the past [3,8,10,11] is illustrated in Fig.4. In the implementation of Fig. 4, a conventional diode bridge rectifier is used to supply the 42V bus. The 14V bus is supplied through a semi-co ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... i.e., internal shaft position feedback. In case of a brushed DC motor, feedback is implemented using a mechanical commutator and brushes. With a in BLDC motor, it is achieved using multiple feedback sensors. The most commonly used sensors are hall sensors and optical encoders. In a commutation syste ...
... i.e., internal shaft position feedback. In case of a brushed DC motor, feedback is implemented using a mechanical commutator and brushes. With a in BLDC motor, it is achieved using multiple feedback sensors. The most commonly used sensors are hall sensors and optical encoders. In a commutation syste ...
DS1314 3V Nonvolatile Controller with Lithium Battery Monitor
... has not been previously flagged with BW ) is removed between battery tests, the DS1314 may not immediately sense the removal and may not activate BW until the next scheduled battery test. If a battery is then reattached to the DS1314, the battery may not be tested until the next scheduled test. NOTE ...
... has not been previously flagged with BW ) is removed between battery tests, the DS1314 may not immediately sense the removal and may not activate BW until the next scheduled battery test. If a battery is then reattached to the DS1314, the battery may not be tested until the next scheduled test. NOTE ...
Heliarc® 252 ac/dc and Heliarc® 352 ac/dc
... 2. Do not operate near degreasing and spraying operations. The heat or arc rays can react with chlorinated hydrocarbon vapors to form phosgene, a highly toxic gas, and other irritant gases. 3. If you develop momentary eye, nose, or throat irritation while operating, this is an indication that ve ...
... 2. Do not operate near degreasing and spraying operations. The heat or arc rays can react with chlorinated hydrocarbon vapors to form phosgene, a highly toxic gas, and other irritant gases. 3. If you develop momentary eye, nose, or throat irritation while operating, this is an indication that ve ...
SP6T RF Switch - Mini Circuits
... JSW6-23DR-75+ is a high power reflective SP6T RF switch, with reflective short on output ports in the off condition. Made using Silicon-on-Insulator process, it has very high IP3, a built-in CMOS driver and negative voltage generator. Its tiny 2x2mm, 14-lead case enables wideband performance in tigh ...
... JSW6-23DR-75+ is a high power reflective SP6T RF switch, with reflective short on output ports in the off condition. Made using Silicon-on-Insulator process, it has very high IP3, a built-in CMOS driver and negative voltage generator. Its tiny 2x2mm, 14-lead case enables wideband performance in tigh ...
AAT4616A 数据资料DataSheet下载
... The AAT4616A is a single channel current limiting load switch that is intended to protect against short circuit and over current events by current limiting to a preset level. This device also provides a reverse current blocking feature, ON/OFF enable control and a fault flag to notify a system contr ...
... The AAT4616A is a single channel current limiting load switch that is intended to protect against short circuit and over current events by current limiting to a preset level. This device also provides a reverse current blocking feature, ON/OFF enable control and a fault flag to notify a system contr ...
80V, 50mA OPERATIONAL AMPLIFIERS FEATURES DESCRIPTION
... bandwidth product of 1.8MHz, whereas the OPA453 is optimized for gains greater than 5 and has a 7.5MHz bandwidth. The OPA452 and OPA453 are internally protected against over-temperature conditions and current overloads. Power supplies in the range of ±10V to ±40V can be used. Unlike most other power ...
... bandwidth product of 1.8MHz, whereas the OPA453 is optimized for gains greater than 5 and has a 7.5MHz bandwidth. The OPA452 and OPA453 are internally protected against over-temperature conditions and current overloads. Power supplies in the range of ±10V to ±40V can be used. Unlike most other power ...
ELEC18 - aes journals
... dynamic response, mechanically switched capacitors still found its place in voltage stability application because of the availability, operational simplicity and economical aspects. This paper investigates the application of the Mechanically Switched Capacitor (MSC) to assist the uninterrupted opera ...
... dynamic response, mechanically switched capacitors still found its place in voltage stability application because of the availability, operational simplicity and economical aspects. This paper investigates the application of the Mechanically Switched Capacitor (MSC) to assist the uninterrupted opera ...
Simulation Tool for
... The design of a suitable EMI filter can be done according different approaches [7-9]. Usually a high-order filter is used to reduce inductance and capacitance values. Ideally it could be considered that no harmonic components exist in the frequency range between the line and the switching frequencie ...
... The design of a suitable EMI filter can be done according different approaches [7-9]. Usually a high-order filter is used to reduce inductance and capacitance values. Ideally it could be considered that no harmonic components exist in the frequency range between the line and the switching frequencie ...
INTRODUCTION - KFUPM Faculty List
... The double terminals methods are that fault point is determined by accurately time tagging the arrival of traveling wave at each end of the line. This method depends less on grounding resistance and system running-way, etc... This method is used widely. The velocity is determined by the distributed ...
... The double terminals methods are that fault point is determined by accurately time tagging the arrival of traveling wave at each end of the line. This method depends less on grounding resistance and system running-way, etc... This method is used widely. The velocity is determined by the distributed ...
SN75LVCP412CD 数据资料 dataSheet 下载
... Cable detect mode (for this mode to be active PS and EN must be tied H via a 4.7kΩ or both pins left as NC. Device must be placed < 2" (or <5cm) from eSATA connector). To use this feature CH 1 input must be connected to SATA host while CH 2 input to eSATA connector. After power up device sets CD = 0 ...
... Cable detect mode (for this mode to be active PS and EN must be tied H via a 4.7kΩ or both pins left as NC. Device must be placed < 2" (or <5cm) from eSATA connector). To use this feature CH 1 input must be connected to SATA host while CH 2 input to eSATA connector. After power up device sets CD = 0 ...
A simple maximum power point tracker for thermoelectric generators
... For performing the MPPT process in [13,14], the TEG power source is periodically disconnected from the power converter in order to measure its open-circuit voltage, V TEG;oc ¼ V TEG jITEG ¼0 . Then, SEPIC- and Boost-type DC/DC power converters, respectively, are controlled such that the TEG source o ...
... For performing the MPPT process in [13,14], the TEG power source is periodically disconnected from the power converter in order to measure its open-circuit voltage, V TEG;oc ¼ V TEG jITEG ¼0 . Then, SEPIC- and Boost-type DC/DC power converters, respectively, are controlled such that the TEG source o ...
Circuit Note - uri=media.digikey
... dual I2C isolator, and the ADuM5000 isolated dc-to-dc converter to create a complete data acquisition system for conductivity measurements. The circuit has an 8-pin IMOD connector on board that can be used for connection to a customer microprocessor or a field programmable gate array (FPGA). The AD5 ...
... dual I2C isolator, and the ADuM5000 isolated dc-to-dc converter to create a complete data acquisition system for conductivity measurements. The circuit has an 8-pin IMOD connector on board that can be used for connection to a customer microprocessor or a field programmable gate array (FPGA). The AD5 ...
BATTERY CHARGER INSTRUCTIONS FOR
... If the battery electrolyte contacts skin or clothing, wash immediately with soap and water. If the electrolyte enters the eye, immediately flood the eye with running cold water for at least ten (10) minutes and get medical attention immediately. Never smoke or allow a spark or flame in vicinity of a ...
... If the battery electrolyte contacts skin or clothing, wash immediately with soap and water. If the electrolyte enters the eye, immediately flood the eye with running cold water for at least ten (10) minutes and get medical attention immediately. Never smoke or allow a spark or flame in vicinity of a ...
AT4101261265
... In this research we are investigate the controlling and enhancing or modulation power flow in a transmission line using a static synchronous series compensator (SSSC). At present studies it include detailed PWM techniques controlled for SSSC, are conducted in control circuits. In this proposed techn ...
... In this research we are investigate the controlling and enhancing or modulation power flow in a transmission line using a static synchronous series compensator (SSSC). At present studies it include detailed PWM techniques controlled for SSSC, are conducted in control circuits. In this proposed techn ...
Presentations \Bremond
... Developing a compact broadband three way power divider compatible with ITER environment would certainly required much effort, design work, mock-up validation, let alone manufacturing difficulties for making the real thing. 2. Vacuum window (primary safety barrier) is in an unmatched section - it has ...
... Developing a compact broadband three way power divider compatible with ITER environment would certainly required much effort, design work, mock-up validation, let alone manufacturing difficulties for making the real thing. 2. Vacuum window (primary safety barrier) is in an unmatched section - it has ...
STM6710
... Monitoring up to four different voltages in a small 6-lead SOT23 package, the STM6710 devices can help to lower system cost, reduce board space requirements, and increase the reliability of multi-voltage systems. Low VCC detection circuitry protects the user's system from low voltage conditions, res ...
... Monitoring up to four different voltages in a small 6-lead SOT23 package, the STM6710 devices can help to lower system cost, reduce board space requirements, and increase the reliability of multi-voltage systems. Low VCC detection circuitry protects the user's system from low voltage conditions, res ...
Linear IC Applications UNIT -1 DIFFERENTIAL AMPLIFIER
... In other words, there is some dc voltage at the output terminal without any input signal applied. DC analysis is exactly same as that of first case. ...
... In other words, there is some dc voltage at the output terminal without any input signal applied. DC analysis is exactly same as that of first case. ...
Motor Sizing Principles
... Motor sizing refers to the process of picking the correct motor for a given load. It sis important to size a motor correctly because: a. If a motor is too small for an application it may not have sufficient torque to start the load and run it up to the correct speed. Even if it does get the load up ...
... Motor sizing refers to the process of picking the correct motor for a given load. It sis important to size a motor correctly because: a. If a motor is too small for an application it may not have sufficient torque to start the load and run it up to the correct speed. Even if it does get the load up ...
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.