Techniques for Deriving 3.3V from 5V Supplies
... LT1129-3.3 combines both low dropout and low voltage operation. Small input and output capacitors facilitate compact, surface mount designs. For the LT1129-3.3, dissipation amounts to a little under 1.5W at full output current. The 5-lead surface mount DD package handles this without the aid of a he ...
... LT1129-3.3 combines both low dropout and low voltage operation. Small input and output capacitors facilitate compact, surface mount designs. For the LT1129-3.3, dissipation amounts to a little under 1.5W at full output current. The 5-lead surface mount DD package handles this without the aid of a he ...
Isolated DC-DC converter - SMPS
... • Previous DC-DC converters (Buck, Boost, Buck-Boost) do not provide electrical isolation between input and output - these are non-isolated DC-DC converters • In most applications, isolation is required and this can be provided by transformers ...
... • Previous DC-DC converters (Buck, Boost, Buck-Boost) do not provide electrical isolation between input and output - these are non-isolated DC-DC converters • In most applications, isolation is required and this can be provided by transformers ...
ABB string inverters - PRO-33.0-TL, 33 kW
... = 33.0 kW, adj. ± 0.9 with Pacr =29.7 kW, adj. ± 0 to 1 with S = 33.0 kVA ...
... = 33.0 kW, adj. ± 0.9 with Pacr =29.7 kW, adj. ± 0 to 1 with S = 33.0 kVA ...
A Novel Approach of Position Estimation, Fuzzy based PFC
... control eliminates the need for Hall Effect sensors, using the back-EMF (electromotive force) of the motor instead to estimate the rotor position. Sensorless control is essential for low-cost variable speed applications such as fans and pumps. Refrigerator and air conditioning ...
... control eliminates the need for Hall Effect sensors, using the back-EMF (electromotive force) of the motor instead to estimate the rotor position. Sensorless control is essential for low-cost variable speed applications such as fans and pumps. Refrigerator and air conditioning ...
a voltage-controlled dstatcom for power-quality
... distribution static compensator (DSTATCOM) operating in voltage-control mode. The proposed scheme exhibits several advantages compared to traditional voltagecontrolled DSTATCOM where the reference voltage is arbitrarily taken as 1.0 p.u. The proposed scheme ensures that unity power factor (UPF) is a ...
... distribution static compensator (DSTATCOM) operating in voltage-control mode. The proposed scheme exhibits several advantages compared to traditional voltagecontrolled DSTATCOM where the reference voltage is arbitrarily taken as 1.0 p.u. The proposed scheme ensures that unity power factor (UPF) is a ...
PDF of this page
... current and alternating current. Series and parallel circuits will be introduced. There is also an introduction to the National Electric code. Students will learn the use of multi meters and how to test amperage, voltage, and resistance in various circuits. The course will be taught through a course ...
... current and alternating current. Series and parallel circuits will be introduced. There is also an introduction to the National Electric code. Students will learn the use of multi meters and how to test amperage, voltage, and resistance in various circuits. The course will be taught through a course ...
THE IMPACT OF POOR POWER QUALITY
... Harmonic Distortion Problem Harmonic Distortion can affect current and voltage Harmonic Distortion exists because the waveform contains higher order frequencies (multiples of the 60Hz fundamental or “harmonics”) Harmonic Distortion is the most common Power Quality problem today, excluding poor ...
... Harmonic Distortion Problem Harmonic Distortion can affect current and voltage Harmonic Distortion exists because the waveform contains higher order frequencies (multiples of the 60Hz fundamental or “harmonics”) Harmonic Distortion is the most common Power Quality problem today, excluding poor ...
EMC and variable speed drives
... the basic assumption has been that variable speed drives are limited in number compared to household and similar equipment and that they need a professional to install them, a professional who can be trusted to understand the need for a correct installation of EMC related parts and components. The s ...
... the basic assumption has been that variable speed drives are limited in number compared to household and similar equipment and that they need a professional to install them, a professional who can be trusted to understand the need for a correct installation of EMC related parts and components. The s ...
Input Sources
... change the input voltage to the circuit through a voltage divider. It has a resistive element connected to the circuit by three terminals. One terminal is attached to the minimum voltage, typically ground, while the second is attached to the maximum allowable voltage1, i.e. 5 V. The third terminal i ...
... change the input voltage to the circuit through a voltage divider. It has a resistive element connected to the circuit by three terminals. One terminal is attached to the minimum voltage, typically ground, while the second is attached to the maximum allowable voltage1, i.e. 5 V. The third terminal i ...
Lecture 41: Introduction to inverters
... • Even in the single-phase case, there are multiple ways to control the switches Two-level waveform • Applications: Some three-phase applications: vac(t) • Uninterruptable power supply (UPS) • AC motor drives (b) PWM one side, while• other AC motor drive • Inverters for wind and solar side swit ...
... • Even in the single-phase case, there are multiple ways to control the switches Two-level waveform • Applications: Some three-phase applications: vac(t) • Uninterruptable power supply (UPS) • AC motor drives (b) PWM one side, while• other AC motor drive • Inverters for wind and solar side swit ...
Cytec_LX7442_Power_P..
... Easy to use Screw Terminal connectors - mating connectors included in system price. GPIB and RS232 or 10/100 Ethernet LAN and RS232 remote control. Full LED display & status feedback to controlling computer give visual indication and aids debugging. Manual Control for use without computer contro ...
... Easy to use Screw Terminal connectors - mating connectors included in system price. GPIB and RS232 or 10/100 Ethernet LAN and RS232 remote control. Full LED display & status feedback to controlling computer give visual indication and aids debugging. Manual Control for use without computer contro ...
Tie-Line Error
... Power systems are used to convert natural energy into electric power. The frequency of electric power is highly dependent on the active power while the voltage of electric power is highly dependent on the reactive power. Thus the control issue in power systems can be decoupled into two independent ...
... Power systems are used to convert natural energy into electric power. The frequency of electric power is highly dependent on the active power while the voltage of electric power is highly dependent on the reactive power. Thus the control issue in power systems can be decoupled into two independent ...
SPEED VARIATOR INDUSTRIAL DRIVE SYSTEMS
... The Drive Motor Typically the drive motor is an adjustable speed It is available in a variety of speed DC motor. ranges and enclosures. DC motors may have con&oiled armature and field voltigits. The Operator’s Control Station The station, if supplied, usually contains the speed setting potentiometer ...
... The Drive Motor Typically the drive motor is an adjustable speed It is available in a variety of speed DC motor. ranges and enclosures. DC motors may have con&oiled armature and field voltigits. The Operator’s Control Station The station, if supplied, usually contains the speed setting potentiometer ...
Portable measuring equipment for grid analysis
... TDK-EPC, a group company of the TDK Corporation, presents a complete measurement system from EPCOS for the measurement and storage of electrical parameters in 3-phase low voltage grids. The MC7000-3 is designed for measuring voltages in the ranges from 3 x 30 V AC to 440 V AC (L-N) and 3 x 50 V AC t ...
... TDK-EPC, a group company of the TDK Corporation, presents a complete measurement system from EPCOS for the measurement and storage of electrical parameters in 3-phase low voltage grids. The MC7000-3 is designed for measuring voltages in the ranges from 3 x 30 V AC to 440 V AC (L-N) and 3 x 50 V AC t ...
Variable-frequency drive
A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.