High Brightness LED Driver Solutions for General Lighting
... Switching controllers have leading edge blank circuit of 200-400 ns before current is sensed Switching frequency must be reduced for proper operation and input voltage is kept to a minimum with a half wave rectified input circuit ...
... Switching controllers have leading edge blank circuit of 200-400 ns before current is sensed Switching frequency must be reduced for proper operation and input voltage is kept to a minimum with a half wave rectified input circuit ...
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... collaborate unfavorably with power system equipment like motors and transformers causing over loading, overheating and additional losses and can also create interference with the telecommunication system and may lead to erroneous operation in metering devices. Due to these detrimental effects Standa ...
... collaborate unfavorably with power system equipment like motors and transformers causing over loading, overheating and additional losses and can also create interference with the telecommunication system and may lead to erroneous operation in metering devices. Due to these detrimental effects Standa ...
isscc 2010 / session 5 / processors / 5.5
... each circuit [3]. Most of the logic uses APS VDD, SRAMs use a higher APS VCS. Fixed supplies VIO, VMEM, VTT, and DVDD are required for I/O; AVDD is for the PLL and analog circuits; and VFS is for efuse programming. Clock distribution is implemented using grids suspended from balanced H-trees to mini ...
... each circuit [3]. Most of the logic uses APS VDD, SRAMs use a higher APS VCS. Fixed supplies VIO, VMEM, VTT, and DVDD are required for I/O; AVDD is for the PLL and analog circuits; and VFS is for efuse programming. Clock distribution is implemented using grids suspended from balanced H-trees to mini ...
ANX POE Minimum Load
... continuous pulse mode. In addition to this we also have to take into account component tolerances and to allow some margin of error. In most cases, running the dc/dc converter in gated pulse mode has little effect on Power over Ethernet (PoE) operation, other than the audible noise. But unfortunatel ...
... continuous pulse mode. In addition to this we also have to take into account component tolerances and to allow some margin of error. In most cases, running the dc/dc converter in gated pulse mode has little effect on Power over Ethernet (PoE) operation, other than the audible noise. But unfortunatel ...
- aes journals
... generation technique,PWM technique I: INTRODUCTION Due to the extensive use of power electronic based equipments/loads almost in all areas, the point of common coupling (PCC) could be highly distorted [1]-[3]. The switching ON/OFF of high rated load connected to PCC may result into voltage sags or s ...
... generation technique,PWM technique I: INTRODUCTION Due to the extensive use of power electronic based equipments/loads almost in all areas, the point of common coupling (PCC) could be highly distorted [1]-[3]. The switching ON/OFF of high rated load connected to PCC may result into voltage sags or s ...
Wireless powering of single-chip systems with integrated coil
... powering,1 or sheet-type powering systems fabricated with low cost printing technologies.2 The efficiency of inductive power transfer is not very high when the distance is larger than the size of the transmitting coil. However, since it provides a means for power supply without need of power cords o ...
... powering,1 or sheet-type powering systems fabricated with low cost printing technologies.2 The efficiency of inductive power transfer is not very high when the distance is larger than the size of the transmitting coil. However, since it provides a means for power supply without need of power cords o ...
Reactive Power Compensation (Power Factor Correction) AI8 www.edibon.com
... MUAD is the perfect link between the application and the PC. MUAD is a continuous data acquisition system with virtual instrumentation, that measures, analyzes and represents the parameters involved in the process. MUAD allows voltage and current acquisition and measurement, data processing, frequen ...
... MUAD is the perfect link between the application and the PC. MUAD is a continuous data acquisition system with virtual instrumentation, that measures, analyzes and represents the parameters involved in the process. MUAD allows voltage and current acquisition and measurement, data processing, frequen ...
Geomagnetically Induced Currents
... Solar events can cause changes in the earth’s magnetic field (i.e., dB/dt). These changes in turn produces an electric field at the surface ...
... Solar events can cause changes in the earth’s magnetic field (i.e., dB/dt). These changes in turn produces an electric field at the surface ...
here - Transaction on electrical engineering
... phase if sufficient energy source is provided. For the reactive power compensation function, only the magnitude of the voltage is controllable since the vector of the inserted voltage is perpendicular to the line current. The SSSC can be smoothly controlled at any leading or lagging value within the ...
... phase if sufficient energy source is provided. For the reactive power compensation function, only the magnitude of the voltage is controllable since the vector of the inserted voltage is perpendicular to the line current. The SSSC can be smoothly controlled at any leading or lagging value within the ...
Harmonic Design - GE Industrial Solutions
... concern itself with the effects of harmonics on its own equipment while connected to the utility’s grid. But a design engineer responsible for the power quality of that facility will also need to be aware of the affects that harmonics can produce when the facility is under generator power. For examp ...
... concern itself with the effects of harmonics on its own equipment while connected to the utility’s grid. But a design engineer responsible for the power quality of that facility will also need to be aware of the affects that harmonics can produce when the facility is under generator power. For examp ...
Digital Arc Lamp Power Supplies
... contribution to output stability is significant. The output of these power supplies changes by less than 0.02% even for large swings in the line voltage. Light ripple is <1% r.m.s. To minimize signal changes beyond the power supply's control, we recommend that you use our 68950 Light Intensity Contr ...
... contribution to output stability is significant. The output of these power supplies changes by less than 0.02% even for large swings in the line voltage. Light ripple is <1% r.m.s. To minimize signal changes beyond the power supply's control, we recommend that you use our 68950 Light Intensity Contr ...
Dec 2001 Reduce Power Consumption of DSL Modems with the LT1969 Line Driver
... The LTC1705 minimizes expensive bulk output capacitors by using active voltage positioning (AVP). It also takes advantage of 2-step conversion and the produces the most efficient and ...
... The LTC1705 minimizes expensive bulk output capacitors by using active voltage positioning (AVP). It also takes advantage of 2-step conversion and the produces the most efficient and ...
Kingsine Electric Automation Co., Ltd.
... 20bit serial port DA in China, which will further improve output precision. ...
... 20bit serial port DA in China, which will further improve output precision. ...
H49054650
... To understand the effects on the grid and power converters, the following series of events was performed. First, a balanced three-phase linear load demanding almost 25 kW was connected to the DG terminals at the beginning of the simulation. At 1.8 s, the power produced by the DG system was reduced, ...
... To understand the effects on the grid and power converters, the following series of events was performed. First, a balanced three-phase linear load demanding almost 25 kW was connected to the DG terminals at the beginning of the simulation. At 1.8 s, the power produced by the DG system was reduced, ...
Power factor
In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number in the closed interval of -1 to 1. A power factor of less than one means that the voltage and current waveforms are not in phase, reducing the instantaneous product of the two waveforms (V x I). Real power is the capacity of the circuit for performing work in a particular time. Apparent power is the product of the current and voltage of the circuit. Due to energy stored in the load and returned to the source, or due to a non-linear load that distorts the wave shape of the current drawn from the source, the apparent power will be greater than the real power. A negative power factor occurs when the device (which is normally the load) generates power, which then flows back towards the source, which is normally considered the generator.In an electric power system, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. Because of the costs of larger equipment and wasted energy, electrical utilities will usually charge a higher cost to industrial or commercial customers where there is a low power factor.Linear loads with low power factor (such as induction motors) can be corrected with a passive network of capacitors or inductors. Non-linear loads, such as rectifiers, distort the current drawn from the system. In such cases, active or passive power factor correction may be used to counteract the distortion and raise the power factor. The devices for correction of the power factor may be at a central substation, spread out over a distribution system, or built into power-consuming equipment.