Approaches to Battery Charger Testing
... Chargers may “test” the battery during charge by reducing or even drawing power from the battery itself. Some types of batteries require these “tests” for the charge to be properly accepted, to reduce internal pressure, or to re-absorb chemicals within the battery itself. Alternatively, some charger ...
... Chargers may “test” the battery during charge by reducing or even drawing power from the battery itself. Some types of batteries require these “tests” for the charge to be properly accepted, to reduce internal pressure, or to re-absorb chemicals within the battery itself. Alternatively, some charger ...
Review: To Investigate Impacts of Various Factors on the
... Load & Faults taking place on line. As a result Voltage collapse take place & it is undesirable for Secure & Economic operation of line. Such problems can be mitigated by providing sufficient margin of power transfer but in practice is not possible due to Expansion of Transmission Network. Another t ...
... Load & Faults taking place on line. As a result Voltage collapse take place & it is undesirable for Secure & Economic operation of line. Such problems can be mitigated by providing sufficient margin of power transfer but in practice is not possible due to Expansion of Transmission Network. Another t ...
Dual-mode Multiphase Sinusoidal Oscillator using CDBAs
... condition is satisfied when K = 2 or R2 = 2R3. It should be noted that, the output voltages are ready to be used since they appear at the voltage output ports of the CDBAs. However, the current outputs need additional ports to duplicate the desired signals to the next stage. This configuration is ea ...
... condition is satisfied when K = 2 or R2 = 2R3. It should be noted that, the output voltages are ready to be used since they appear at the voltage output ports of the CDBAs. However, the current outputs need additional ports to duplicate the desired signals to the next stage. This configuration is ea ...
OpticalADC_Tutorial
... As shown in Figure 1, a low-jitter pulsed laser is leveraged to perform precise sub-sampling of a narrowband RF signal. Information travels between the optical and electrical domains by connecting a photodiode to an on-chip current source and capacitor. The resulting photodiode-based integrator serv ...
... As shown in Figure 1, a low-jitter pulsed laser is leveraged to perform precise sub-sampling of a narrowband RF signal. Information travels between the optical and electrical domains by connecting a photodiode to an on-chip current source and capacitor. The resulting photodiode-based integrator serv ...
to notes15
... hybrid because it computes a quantity on right side (secondary voltage) from a quantity on the left side (input voltage) and a quantity on the right side (load current). ...
... hybrid because it computes a quantity on right side (secondary voltage) from a quantity on the left side (input voltage) and a quantity on the right side (load current). ...
Interpretation of Datasheet Parameters for ESD Devices
... for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any suc ...
... for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any suc ...
Investigation of a Power Factor Correction Fed
... As a consequence of this requirement, different kind of power quality correction techniques are available today for applications using BLDC motor drives, but the most common is the Power Factor Correction (PFC) converter. PFC improves the power quality at ac mains as it reduces the total harmonic di ...
... As a consequence of this requirement, different kind of power quality correction techniques are available today for applications using BLDC motor drives, but the most common is the Power Factor Correction (PFC) converter. PFC improves the power quality at ac mains as it reduces the total harmonic di ...
Low-Power SoC Design Techniques
... – To independently manage the transitions of hardware scaling blocks. e.g., clock generators and power controllers ...
... – To independently manage the transitions of hardware scaling blocks. e.g., clock generators and power controllers ...
Multimode High-Frequency PWM Controller
... synchronous PWM controller that can be used in buck, boost, SEPIC, or flyback topologies. This highly flexible, full-featured controller is designed to drive a pair of external MOSFETs (one N-channel and one P-channel), enabling it for use with a wide range of output voltages and power levels. With ...
... synchronous PWM controller that can be used in buck, boost, SEPIC, or flyback topologies. This highly flexible, full-featured controller is designed to drive a pair of external MOSFETs (one N-channel and one P-channel), enabling it for use with a wide range of output voltages and power levels. With ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... In order to investigate the feasibility of the proposed techniques, UPFC embedded power flow studies on IEEE 30-bus test system , shown in fig.1. It should be pointed out that the results are taken by the choice of UPFC parameters, i.e., the control parameters of UPFC (r, c) are given and UPFC is op ...
... In order to investigate the feasibility of the proposed techniques, UPFC embedded power flow studies on IEEE 30-bus test system , shown in fig.1. It should be pointed out that the results are taken by the choice of UPFC parameters, i.e., the control parameters of UPFC (r, c) are given and UPFC is op ...
independent current sources
... The behavior of independent sources can be explained by the fact that the voltage drop across the terminals is independent of the load connected to it. The power requirement of the load is determined by the amount of current which is being providing at the defined value of the voltage. Similarly, fo ...
... The behavior of independent sources can be explained by the fact that the voltage drop across the terminals is independent of the load connected to it. The power requirement of the load is determined by the amount of current which is being providing at the defined value of the voltage. Similarly, fo ...
Installation Manual
... a cabinet or sub-cabinet, for either single or three-phase installations. The Power Meter continuously measures voltage, current, power factor, cumulative active and reactive kilowatt-hours, and line frequency. Current transformers are clamped around the mains conductors and register the current amp ...
... a cabinet or sub-cabinet, for either single or three-phase installations. The Power Meter continuously measures voltage, current, power factor, cumulative active and reactive kilowatt-hours, and line frequency. Current transformers are clamped around the mains conductors and register the current amp ...
Comparison of Electric Springs with STATCOM for
... across the loads is reduced by increasing the reactive power absorption of the renewable source. This is to test the ability of an ES and a STATCOM to support the voltage and regulate it at the nominal value. At t = 1.0 s, the reactive power absorption by the intermittent renewable source is increas ...
... across the loads is reduced by increasing the reactive power absorption of the renewable source. This is to test the ability of an ES and a STATCOM to support the voltage and regulate it at the nominal value. At t = 1.0 s, the reactive power absorption by the intermittent renewable source is increas ...
A Power Meter Reference Design Based on the
... an external calibration routine by a PC through an external SPI interface. The ADE7756 is comprised of two ADCs, a reference circuit, and all the signal processing necessary for the calculation of real (active) power. Circuitry is provided to null out various system errors including gain, phase, and ...
... an external calibration routine by a PC through an external SPI interface. The ADE7756 is comprised of two ADCs, a reference circuit, and all the signal processing necessary for the calculation of real (active) power. Circuitry is provided to null out various system errors including gain, phase, and ...
AN58 - 5V to 3.3V Converters for Microprocessor Systems
... dropout regulators. Since PNP transistors are much larger than monolithic NPNs, higher current regulators use an NPN pass device. The LT1117, LT1086, LT1083 through LT1085, and LT1087 all use NPN pass devices. The NPN structure requires about 1.2V headroom compared to the 400mV to 500mV dropout typi ...
... dropout regulators. Since PNP transistors are much larger than monolithic NPNs, higher current regulators use an NPN pass device. The LT1117, LT1086, LT1083 through LT1085, and LT1087 all use NPN pass devices. The NPN structure requires about 1.2V headroom compared to the 400mV to 500mV dropout typi ...
Supplementary Instructions for Reduced-Voltage
... percentage of motor full-load current. As the motor accelerates, the current drawn decreases. Solid-state equivalents of the current transition relay (such as an IQ1000) operate on the same principle. These relays sense the lowering of motor current as the motor approaches rated speed. In the event ...
... percentage of motor full-load current. As the motor accelerates, the current drawn decreases. Solid-state equivalents of the current transition relay (such as an IQ1000) operate on the same principle. These relays sense the lowering of motor current as the motor approaches rated speed. In the event ...
Field assessment of induction motor efficiency
... convenience in assessing efficiencies at different slips through its simple circuit calculations. However, tracing parameters of a motor in the field is not an easy task, especially when roughly half the motors used in U. S. industry have been rewound [3]. The nominal parameters obtained from manufa ...
... convenience in assessing efficiencies at different slips through its simple circuit calculations. However, tracing parameters of a motor in the field is not an easy task, especially when roughly half the motors used in U. S. industry have been rewound [3]. The nominal parameters obtained from manufa ...
Action PAK AP1690 ® AC Input, Field Configurable Limit Alarms
... voltage or current input applied, adjust setpoint until the relay trips. For HI trip calibration, start below the desired trip. Deadband: Set deadband to its minimum (factory default - fully CCW). Set setpoint to desired trip. Adjust voltage or current input until relay trips. Readjust deadband to 5 ...
... voltage or current input applied, adjust setpoint until the relay trips. For HI trip calibration, start below the desired trip. Deadband: Set deadband to its minimum (factory default - fully CCW). Set setpoint to desired trip. Adjust voltage or current input until relay trips. Readjust deadband to 5 ...
B23011017
... loads connected near the connection point of the passive filter. —They are not suitable for variable loads, since, on one hand, they are designed for a specific reactive power, and on the other hand, the variation of the load impedance can detune the filter. —Series and/or parallel resonances with t ...
... loads connected near the connection point of the passive filter. —They are not suitable for variable loads, since, on one hand, they are designed for a specific reactive power, and on the other hand, the variation of the load impedance can detune the filter. —Series and/or parallel resonances with t ...
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.