6B21 数据手册DataSheet 下载
... provides a digitally-controlled isolated current loop output to a resolution of 12 bits. The output range can be selected to either a 0 to 20 mA or 4 mA to 20 mA process current. It is electrically and mechanically compatible with the 6B Series input modules and backplanes. The 6B21 takes a command ...
... provides a digitally-controlled isolated current loop output to a resolution of 12 bits. The output range can be selected to either a 0 to 20 mA or 4 mA to 20 mA process current. It is electrically and mechanically compatible with the 6B Series input modules and backplanes. The 6B21 takes a command ...
L6376
... Switch driver supply. To minimize the output drop voltage, a supply of about 10 V higher than VS is required. In order to use the built-in charge pump, connect a filter capacitor from pin1 to pin. The suggested value assures a fast transition and a low supply ripple even in worse condition. Using th ...
... Switch driver supply. To minimize the output drop voltage, a supply of about 10 V higher than VS is required. In order to use the built-in charge pump, connect a filter capacitor from pin1 to pin. The suggested value assures a fast transition and a low supply ripple even in worse condition. Using th ...
Power Distribution
... Power = Sq Rt 3 VL x IL x Cos phi Hence in both the cases power = Sq Rt 3 VL x IL x Cos phi Advantage of 3 phase system over single phase system : For the same size a three phase a.c. machine has higher KVA capacity, hence is more economical than single phase machine. Small loads like lighting loads ...
... Power = Sq Rt 3 VL x IL x Cos phi Hence in both the cases power = Sq Rt 3 VL x IL x Cos phi Advantage of 3 phase system over single phase system : For the same size a three phase a.c. machine has higher KVA capacity, hence is more economical than single phase machine. Small loads like lighting loads ...
Individual-phase decoupled P–Q control of three
... will be useful to electric railways and trams supplied by single-line pantographs [6]. It will be equally valuable when three-phase power systems have faults. Apart from faults, most domestic supplies are from a single phase and a neutral wire. In spite of continual effort to balance the three singl ...
... will be useful to electric railways and trams supplied by single-line pantographs [6]. It will be equally valuable when three-phase power systems have faults. Apart from faults, most domestic supplies are from a single phase and a neutral wire. In spite of continual effort to balance the three singl ...
Test systems for -compliance
... reduced line voltage and quality of the AC power network. In addition to that, certain devices such as stoves, instant water heaters, etc. operate by switching the power repeatedly on and off. These sudden load changes result in line voltage variations perceived as fluctuations in the brightness of ...
... reduced line voltage and quality of the AC power network. In addition to that, certain devices such as stoves, instant water heaters, etc. operate by switching the power repeatedly on and off. These sudden load changes result in line voltage variations perceived as fluctuations in the brightness of ...
BDTIC TLE4983C
... automotive. Its basic function is to map either a tooth or a notch of a gear or magnet ...
... automotive. Its basic function is to map either a tooth or a notch of a gear or magnet ...
1760 Three-Phase Power Quality Recorder Topas
... power quality analysis and consistent compliance testing. Designed for analysis of utility and industrial power distribution systems, in medium and low-voltage networks, the Fluke 1760 provides the flexibility to customize thresholds, algorithms, and measurement selections. It has 8 input channels ( ...
... power quality analysis and consistent compliance testing. Designed for analysis of utility and industrial power distribution systems, in medium and low-voltage networks, the Fluke 1760 provides the flexibility to customize thresholds, algorithms, and measurement selections. It has 8 input channels ( ...
Introduction Simulation Methodology.
... Next using simulator generated large signal impedance data; review the optimum match at the upper band edge. The next step is to use a linear simulator to embed the matching structure into the transformer structure. In order to successfully embed the upper edge matching network into the transformer ...
... Next using simulator generated large signal impedance data; review the optimum match at the upper band edge. The next step is to use a linear simulator to embed the matching structure into the transformer structure. In order to successfully embed the upper edge matching network into the transformer ...
InductorsACCrkts - University of Colorado Boulder
... the city at very high voltage (typically 300 kV). A high voltage allows a small current, at a given power (since P = IV). And a small current means small I2R losses in the cable. When the high-voltage power is delivered to the city, step-down transformers are used to transform the very dangerous hig ...
... the city at very high voltage (typically 300 kV). A high voltage allows a small current, at a given power (since P = IV). And a small current means small I2R losses in the cable. When the high-voltage power is delivered to the city, step-down transformers are used to transform the very dangerous hig ...
Self-Powered Ambient Light Sensor Using
... TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguar ...
... TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguar ...
MAX764/MAX765/MAX766 -5V/-12V/-15V or Adjustable, High-Efficiency, Low I DC-DC Inverters
... 1) They can operate with miniature (less than 5mm diameter) surface-mount inductors, because of their 300kHz switching frequency. 2) The current-limited PFM control scheme allows efficiencies exceeding 80% over a wide range of load currents. 3) Maximum quiescent supply current is only 120µA. Figures ...
... 1) They can operate with miniature (less than 5mm diameter) surface-mount inductors, because of their 300kHz switching frequency. 2) The current-limited PFM control scheme allows efficiencies exceeding 80% over a wide range of load currents. 3) Maximum quiescent supply current is only 120µA. Figures ...
Desktop Switching Power Supply
... - Male, 2 pole 3 Wire grounding (3 prong) plug Type“NEMA5-15P” on the other end for connection to the AC outlet. RED (+) and BLACK (-) terminals with tubular hole and set screw. Hole diameter 0.2 “, (5 mm). Includes a pair of copper terminal lugs for crimping to output wires to the load For 120 VAC ...
... - Male, 2 pole 3 Wire grounding (3 prong) plug Type“NEMA5-15P” on the other end for connection to the AC outlet. RED (+) and BLACK (-) terminals with tubular hole and set screw. Hole diameter 0.2 “, (5 mm). Includes a pair of copper terminal lugs for crimping to output wires to the load For 120 VAC ...
section 232923 - variable-frequency motor
... AC motor variable frequency controller (VFC) shall be of pulse width modulated (PWM) inverter type. The VFC shall be designed to convert 60 Hz input power to adjustable frequency output power to provide positive speed control to standard induction motors. The VFC shall be dedicated variable torque d ...
... AC motor variable frequency controller (VFC) shall be of pulse width modulated (PWM) inverter type. The VFC shall be designed to convert 60 Hz input power to adjustable frequency output power to provide positive speed control to standard induction motors. The VFC shall be dedicated variable torque d ...
neil_total4 - Ece.umd.edu
... – Designed digital circuit to control communication and sensing algorithms of Smart Dust nodes and network – Implemented design in FPGA and ASIC (currently under fabrication) – Developed 1.5cm x 1.5cm smart dust nodes (with transceiver and antenna group). To our knowledge, smallest motes ever built ...
... – Designed digital circuit to control communication and sensing algorithms of Smart Dust nodes and network – Implemented design in FPGA and ASIC (currently under fabrication) – Developed 1.5cm x 1.5cm smart dust nodes (with transceiver and antenna group). To our knowledge, smallest motes ever built ...
Unified Power Quality Conditioner: A Review
... Functionally, the series filter is used to compensate for the voltage distortions while the shunt filter is needed to provide reactive power and counteract the harmonic current injected by the load. Also, the voltage of the DC link capacitor is controlled to a desired value by the shunt active filte ...
... Functionally, the series filter is used to compensate for the voltage distortions while the shunt filter is needed to provide reactive power and counteract the harmonic current injected by the load. Also, the voltage of the DC link capacitor is controlled to a desired value by the shunt active filte ...
TN100 RF module
... Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or other ...
... Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or other ...
CAPS_ESRDC_26May2009_Overview
... Real and reactive power distribution between DC source and energy storage element Reduce converter switching loss and increase output voltage boost ratio High power density and high efficiency ...
... Real and reactive power distribution between DC source and energy storage element Reduce converter switching loss and increase output voltage boost ratio High power density and high efficiency ...
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.