RF3194 QUAD-BAND GSM POWER AMP MODULE Features
... impedance presented to the PA varies, so does the output power and current to the power amplifier. If left uncontrolled, power amplifier current can peak at high levels that starve other circuitry, connected to the same supply, of the required voltage to operate. This can result in a reset or shutdo ...
... impedance presented to the PA varies, so does the output power and current to the power amplifier. If left uncontrolled, power amplifier current can peak at high levels that starve other circuitry, connected to the same supply, of the required voltage to operate. This can result in a reset or shutdo ...
Verification of Performance – Sensor Perfect 1000 Power Metrics International
... NLLs draw irregularly sine-wave shaped (or distorted) current on each phase, ...
... NLLs draw irregularly sine-wave shaped (or distorted) current on each phase, ...
Input Filter Design of a Mains Connected Matrix
... The quality factor Q may be calculated as a function of the ξ damping factor (4): ...
... The quality factor Q may be calculated as a function of the ξ damping factor (4): ...
SMPS600RS - Connexelectronic
... of decent made amplifier can be found at reasonable prices. One should not try to save some bucks on a critical part of system such as amplifier which can lead to frustrating results until eventually will have to spend money again buying a good amplifier this time. RF Amplifiers: Due to the high per ...
... of decent made amplifier can be found at reasonable prices. One should not try to save some bucks on a critical part of system such as amplifier which can lead to frustrating results until eventually will have to spend money again buying a good amplifier this time. RF Amplifiers: Due to the high per ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... for overcoming the problem of voltage/power instability, when HVDC system is connected to a weak AC system. The voltage/power controllability of the VSC-HVDC system is determined by the controllers included in the system. Adequate performance of the VSC-HVDC system under diverse operating conditions ...
... for overcoming the problem of voltage/power instability, when HVDC system is connected to a weak AC system. The voltage/power controllability of the VSC-HVDC system is determined by the controllers included in the system. Adequate performance of the VSC-HVDC system under diverse operating conditions ...
AN3157
... In a stand-alone configuration the STPMC1, which sends a pulse train signal with a frequency proportional to the cumulative active power, can directly drive a stepper motor, therefore implementing a simple active energy meter. This device can also be coupled to a microprocessor for multi-function en ...
... In a stand-alone configuration the STPMC1, which sends a pulse train signal with a frequency proportional to the cumulative active power, can directly drive a stepper motor, therefore implementing a simple active energy meter. This device can also be coupled to a microprocessor for multi-function en ...
RA60H4452M1 数据资料DataSheet下载
... 5.RA series products are designed to operate into a nominal load impedance of 50. Under the condition of operating into a severe high load VSWR approaching an open or short, an over load condition could occur. In the worst case there is risk for burn out of the transistors and burning of other part ...
... 5.RA series products are designed to operate into a nominal load impedance of 50. Under the condition of operating into a severe high load VSWR approaching an open or short, an over load condition could occur. In the worst case there is risk for burn out of the transistors and burning of other part ...
High-Efficiency Power Amplifier Using Dynamic Power-Supply Voltage for CDMA Applications Gary Hanington,
... save power, this voltage was obtained from a dual source; a minimum voltage of 7 V was fed to the amplifier, which could be overridden by a linearly controlled voltage between 7–12 V, which followed the signal envelope. Although the higher voltage was provided by virtue of a relatively inefficient f ...
... save power, this voltage was obtained from a dual source; a minimum voltage of 7 V was fed to the amplifier, which could be overridden by a linearly controlled voltage between 7–12 V, which followed the signal envelope. Although the higher voltage was provided by virtue of a relatively inefficient f ...
Wireless Inductive Charging for Low Power Devices
... a perfect coupling, i.e. all flux generated penetrates the receiver coil. 0 means that with such a system the transmitter and receiver coils are totally independent of each other. The coupling factor is determined by the distance between the inductors and their relative size. This is further depende ...
... a perfect coupling, i.e. all flux generated penetrates the receiver coil. 0 means that with such a system the transmitter and receiver coils are totally independent of each other. The coupling factor is determined by the distance between the inductors and their relative size. This is further depende ...
May 2004 Single Device Tracks and Monitors Five Supplies
... Handling of Monitor Errors The LTC2921 and LTC2922 protect the loads against invalid supply levels and supply sources that have failed outright. The failure of one or more of the input monitors deactivates power good, opens the remote sense switches, and separates the loads from the sources by quick ...
... Handling of Monitor Errors The LTC2921 and LTC2922 protect the loads against invalid supply levels and supply sources that have failed outright. The failure of one or more of the input monitors deactivates power good, opens the remote sense switches, and separates the loads from the sources by quick ...
power conditioning in battery chargers using shunt
... Harmonic compensation have become increasingly important due to the intensive use of power converters and other nonlinear loads which results in the deterioration of power system voltages and current waveforms. Thus the current wave form can become quite complex depending up on the type of load and ...
... Harmonic compensation have become increasingly important due to the intensive use of power converters and other nonlinear loads which results in the deterioration of power system voltages and current waveforms. Thus the current wave form can become quite complex depending up on the type of load and ...
A Static Power Model for Architects
... Even when devices do not change values due to the imperfect nature of semiconductor-based Transistors power is dissipated. This is the static power. In existing designs, static power is relatively small. However, as we move towards smaller transistors and lower voltages, static power increases rapid ...
... Even when devices do not change values due to the imperfect nature of semiconductor-based Transistors power is dissipated. This is the static power. In existing designs, static power is relatively small. However, as we move towards smaller transistors and lower voltages, static power increases rapid ...
Aalborg Universitet Connected Microgrids under Voltage Sags
... power as defined in Fig. 2. It is clear that when the grid voltage is lower than 0.9VN, 1% drop of the grid voltage requires at least k% increase of the rated current. Conventionally, LVRT in PV plants and wind farms are achieved by means of controlling the grid-interactive converter as a current so ...
... power as defined in Fig. 2. It is clear that when the grid voltage is lower than 0.9VN, 1% drop of the grid voltage requires at least k% increase of the rated current. Conventionally, LVRT in PV plants and wind farms are achieved by means of controlling the grid-interactive converter as a current so ...
A Genetic Algorithm for Solving the Optimal Power Flow Problem
... To compare these results with conventional method using the same cost objective function we have take conventional method present in [13]. The method is based on a QuasiNewton Method using Broyden-Fletcher-Goldfarb-Shanno (BFGS) updating formula and iterated with the Newton Raphson load flow. The re ...
... To compare these results with conventional method using the same cost objective function we have take conventional method present in [13]. The method is based on a QuasiNewton Method using Broyden-Fletcher-Goldfarb-Shanno (BFGS) updating formula and iterated with the Newton Raphson load flow. The re ...
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.