Handwriting enabled harvested piezoelectric power using ZnO nanowires/polymer composite on paper substrate
... and slow handwriting modes as different mechanical energy are applied for these two different modes. The handwriting speed and the corresponding pressure vary from person to person and depend on the type of pen used. The slow mode corresponds to low applied pressure, while the fast handwriting mode ...
... and slow handwriting modes as different mechanical energy are applied for these two different modes. The handwriting speed and the corresponding pressure vary from person to person and depend on the type of pen used. The slow mode corresponds to low applied pressure, while the fast handwriting mode ...
ABB industrial drives ACS880, single drives 0.75 to 1700 hp (0.55 to
... Wall-mounted single drives, ACS880-01 Our wall-mounted drives are designed on ABB’s common drives architecture. They are customized to the precise needs of industries such as oil and gas, mining, metals, chemicals, cement, power plants, material handling, pulp and paper, sawmills and marine. They a ...
... Wall-mounted single drives, ACS880-01 Our wall-mounted drives are designed on ABB’s common drives architecture. They are customized to the precise needs of industries such as oil and gas, mining, metals, chemicals, cement, power plants, material handling, pulp and paper, sawmills and marine. They a ...
External Reactive Power Compensation of Permanent Magnet
... pole synchronous generator in connection with various configurations is discussed in [22]. When comparing permanently synchronous generators with diodes or IGBT converters, the latter configuration increases the efficiency in the partial load operation. However, the reliability effect for the diode ...
... pole synchronous generator in connection with various configurations is discussed in [22]. When comparing permanently synchronous generators with diodes or IGBT converters, the latter configuration increases the efficiency in the partial load operation. However, the reliability effect for the diode ...
LT3091 - –36V, 1.5A Negative Linear Regulator with Programmable
... These resistors and diodes only carry current under transient overloads or fault conditions. Note 10. Positive SHDN pin current flows into the SHDN pin. Note 11. The SHDN threshold must be met to ensure device operation. Note 12. Output noise decreases by adding a capacitor across the voltage settin ...
... These resistors and diodes only carry current under transient overloads or fault conditions. Note 10. Positive SHDN pin current flows into the SHDN pin. Note 11. The SHDN threshold must be met to ensure device operation. Note 12. Output noise decreases by adding a capacitor across the voltage settin ...
EN / ACS800-04/04M/U4 Drive Modules (45 to 560 kW, 60 to 600 hp
... the instructions can cause physical injury or death, or damage to the equipment. Note: Controlling a permanent magnet motor is only allowed using the ACS800 Permanent Magnet Synchronous Machine Drive Application Program. Installation and maintenance work WARNING! Do not work on the drive when the pe ...
... the instructions can cause physical injury or death, or damage to the equipment. Note: Controlling a permanent magnet motor is only allowed using the ACS800 Permanent Magnet Synchronous Machine Drive Application Program. Installation and maintenance work WARNING! Do not work on the drive when the pe ...
Advantages of Solid-State Relays Over Electro
... 3. About IXYS IC Division's SSRs OptoMOS® solid state relays use semiconductor technology to provide isolated small signal switching solutions. OptoMOS solid-state relays include three major circuit functions using four discrete semiconductor chips to achieve optimum performance. The input circuit c ...
... 3. About IXYS IC Division's SSRs OptoMOS® solid state relays use semiconductor technology to provide isolated small signal switching solutions. OptoMOS solid-state relays include three major circuit functions using four discrete semiconductor chips to achieve optimum performance. The input circuit c ...
Modular Oscilloscopes vs. Digitizers Technical Article
... signals into digital form for analysis and processing. The basicspecifications are very similar for modular Test system designers have many options available digitizers and modular oscilloscopes. They include to meet their test requirements. One of their vertical resolution, sampling rate, analog ba ...
... signals into digital form for analysis and processing. The basicspecifications are very similar for modular Test system designers have many options available digitizers and modular oscilloscopes. They include to meet their test requirements. One of their vertical resolution, sampling rate, analog ba ...
SiC Power Device Catalog
... including: high breakdown voltage, low power consumption, and high-speed switching operation not provided by conventional silicon devices. In response to the growing demand for SiC products, ROHM has implemented the world's first full-scale, mass production of next-generation SiC components. ...
... including: high breakdown voltage, low power consumption, and high-speed switching operation not provided by conventional silicon devices. In response to the growing demand for SiC products, ROHM has implemented the world's first full-scale, mass production of next-generation SiC components. ...
SiC Power Device
... including: high breakdown voltage, low power consumption, and high-speed switching operation not provided by conventional silicon devices. In response to the growing demand for SiC products, ROHM has implemented the world's first full-scale, mass production of next-generation SiC components. ...
... including: high breakdown voltage, low power consumption, and high-speed switching operation not provided by conventional silicon devices. In response to the growing demand for SiC products, ROHM has implemented the world's first full-scale, mass production of next-generation SiC components. ...
Metal-Oxide Surge Arresters in High-Voltage Transmission
... SiC-resistors. In Figure 2, an example is shown of the U-I-characteristic of a typical MO-arrester connected between the conductor and the ground in an effectively grounded 420-kVsystem. This arrester has a continuous operating voltage (Uc) of 268 kV and a rated voltage (Ur) – which characterizes th ...
... SiC-resistors. In Figure 2, an example is shown of the U-I-characteristic of a typical MO-arrester connected between the conductor and the ground in an effectively grounded 420-kVsystem. This arrester has a continuous operating voltage (Uc) of 268 kV and a rated voltage (Ur) – which characterizes th ...
Harmonic Analysis of A DFIG for Wind Energy Conversion System
... voltage. This AC voltage injected into the rotor circuit will generate a flux with a frequency ωr if the rotor is standing still. When the rotor is rotating at a speed ωm , the net flux linkage will have a frequency ωs = ωr + ωm . When the wind speed changes, the rotor speed ωm will change and in or ...
... voltage. This AC voltage injected into the rotor circuit will generate a flux with a frequency ωr if the rotor is standing still. When the rotor is rotating at a speed ωm , the net flux linkage will have a frequency ωs = ωr + ωm . When the wind speed changes, the rotor speed ωm will change and in or ...
AT-AO-6/10 User Manual Expansion Board for the PC AT/EISA
... repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor. The media on which you receive National Instruments software are warranted not to fail to execute programming instructions, due to defects in materials and workmanship, for a p ...
... repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor. The media on which you receive National Instruments software are warranted not to fail to execute programming instructions, due to defects in materials and workmanship, for a p ...
BACnet Flow Controller for Fan Filter Units
... The BACnet Flow Controller (BFC) is a BTL listed DDC fan controller designed specifically for controlling flow through Fan Filter Units (FFU) with EC motor technology. The BFC can control up to two ECM motors through a local setpoint which is adjustable using a push button interface on the BFC, by a ...
... The BACnet Flow Controller (BFC) is a BTL listed DDC fan controller designed specifically for controlling flow through Fan Filter Units (FFU) with EC motor technology. The BFC can control up to two ECM motors through a local setpoint which is adjustable using a push button interface on the BFC, by a ...
26 29 23 Low Voltage Variable Frequency Drives
... Component Supply and Compatibility: 1. Drives specified under this Section employ a low switching frequency or pattern to minimize instantaneous rate of voltage change over time (dv/dt), and the adverse effects of potential bearing currents. Where alternate manufacturers are proposed, obtain manufac ...
... Component Supply and Compatibility: 1. Drives specified under this Section employ a low switching frequency or pattern to minimize instantaneous rate of voltage change over time (dv/dt), and the adverse effects of potential bearing currents. Where alternate manufacturers are proposed, obtain manufac ...
Invertec V205-T AC/DC
... allows the operator to control the focus of the arc. This is ideal for critical welds if trying to minimize the heat affected zone in the weld. It is also a benefit for welding on cast aluminum where lower frequency is desired to minimize agitation of impurities in the base metal. ...
... allows the operator to control the focus of the arc. This is ideal for critical welds if trying to minimize the heat affected zone in the weld. It is also a benefit for welding on cast aluminum where lower frequency is desired to minimize agitation of impurities in the base metal. ...
Leeson Basic Training Manual
... varies inversely with the number of poles wound into the stator. Singlephase motors do not produce a rotating field at a standstill, so a starter winding is added to give the effect of a polyphase rotating field. Once the motor is running, the start winding can be cut out of the circuit, and the mot ...
... varies inversely with the number of poles wound into the stator. Singlephase motors do not produce a rotating field at a standstill, so a starter winding is added to give the effect of a polyphase rotating field. Once the motor is running, the start winding can be cut out of the circuit, and the mot ...
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.