shunt active power filtering for smart appliances
... Continuous distorted load currents increase transformer losses and hence contribute to general temperature rise and potential local hotspots. Further, current harmonics cause additional copper losses in all equipment. These additional losses raise the transformer (and other equipment) temperatures a ...
... Continuous distorted load currents increase transformer losses and hence contribute to general temperature rise and potential local hotspots. Further, current harmonics cause additional copper losses in all equipment. These additional losses raise the transformer (and other equipment) temperatures a ...
Evaluation Board User Guide UG-122
... To ensure that the device is not in dropout mode during this measurement, the LDO input voltage must be varied between VOUTNOM + 0.4 V (or +1.65 V, whichever is greater) and VINMAX. For example, for an ADP2140 with a fixed 1.2 V output, the LDO input voltage needs to be varied between 1.65 V and 5.5 ...
... To ensure that the device is not in dropout mode during this measurement, the LDO input voltage must be varied between VOUTNOM + 0.4 V (or +1.65 V, whichever is greater) and VINMAX. For example, for an ADP2140 with a fixed 1.2 V output, the LDO input voltage needs to be varied between 1.65 V and 5.5 ...
555 TIMER
... is less than 1/3 Vs, this makes the output high (+Vs) and the capacitor C1 starts to charge through resistor R1. Once the time period has started further trigger pulses are ignored. The threshold input (555 pin 6) monitors the voltage across C1 and when this reaches 2/3 Vs the time period over and t ...
... is less than 1/3 Vs, this makes the output high (+Vs) and the capacitor C1 starts to charge through resistor R1. Once the time period has started further trigger pulses are ignored. The threshold input (555 pin 6) monitors the voltage across C1 and when this reaches 2/3 Vs the time period over and t ...
BD9C301FJ
... load. Selecting an inductor with a large inductance causes the ripple current ∆IL that flows into the inductor to be small. However, decreasing the ripple voltage generated in the output is not advantageous in terms of the load transient response characteristic. An inductor with a small inductance i ...
... load. Selecting an inductor with a large inductance causes the ripple current ∆IL that flows into the inductor to be small. However, decreasing the ripple voltage generated in the output is not advantageous in terms of the load transient response characteristic. An inductor with a small inductance i ...
RHRG5060_F085 50A, 600V Hyperfast Rectifier RHRG5060_F085 50A, 600V Features
... Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor. The datasheet is for reference information only. Rev. I68 ...
... Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor. The datasheet is for reference information only. Rev. I68 ...
DCA GENERATOR TROUBLESHOOTING GUIDE
... Brushless Design - The purpose of the generator brush is to absorb power from the rotating armature of a generator and supply it to the stationary part of the generator. These brushes have a short life due to erosion. Multiquip’s unique brush less design calls for lower maintenance and a longer gene ...
... Brushless Design - The purpose of the generator brush is to absorb power from the rotating armature of a generator and supply it to the stationary part of the generator. These brushes have a short life due to erosion. Multiquip’s unique brush less design calls for lower maintenance and a longer gene ...
AC testing of cables and electrical apparatus is now easier than ever.
... The principal use of VLF is testingX1 medium and high voltage shielded power cables. A long cable may have many microfarads of capacitance. To AC high voltage test this cable requires the use of VLF technology. An AC voltage test is the best way to verify the AC integrity of a cable. If a cable can’ ...
... The principal use of VLF is testingX1 medium and high voltage shielded power cables. A long cable may have many microfarads of capacitance. To AC high voltage test this cable requires the use of VLF technology. An AC voltage test is the best way to verify the AC integrity of a cable. If a cable can’ ...
HMC197A 数据资料DataSheet下载
... The HMC197A(E) is a low-cost SPDT switch in a 6-lead SOT26 plastic package for use in general switching applications which require very low insertion loss and very small size. The device can control signals from DC to 3 GHz and is especially suited for 900 MHz, 1.8 - 2.2 GHz, and 2.4 GHz ISM applica ...
... The HMC197A(E) is a low-cost SPDT switch in a 6-lead SOT26 plastic package for use in general switching applications which require very low insertion loss and very small size. The device can control signals from DC to 3 GHz and is especially suited for 900 MHz, 1.8 - 2.2 GHz, and 2.4 GHz ISM applica ...
760995XX - Sheet2
... The reset button can be pushed again to cancel initialization. In switched mode, the system will store the baseline light output immediately when power is turned on. The controller will take sensor measurements both with the fixture power off and on and break the dimming circuit as needed during the ...
... The reset button can be pushed again to cancel initialization. In switched mode, the system will store the baseline light output immediately when power is turned on. The controller will take sensor measurements both with the fixture power off and on and break the dimming circuit as needed during the ...
Thompson - WPI - Worcester Polytechnic Institute
... 7. Introduction to DC/DC Converters Marc T. Thompson, Ph.D. Adjunct Associate Professor of Electrical Engineering ...
... 7. Introduction to DC/DC Converters Marc T. Thompson, Ph.D. Adjunct Associate Professor of Electrical Engineering ...
What does it mean V0 residual voltage External
... 1) For Vo measurement you can combine variant 3 with variant 1 and 2: Variant 1 + variant 3 = phase-to-phase voltages (U) + Vo (Residual measurement) Variant 2 + variant 3 = phase-to-neutral voltages (V) + Vo (Residual measurement) ...
... 1) For Vo measurement you can combine variant 3 with variant 1 and 2: Variant 1 + variant 3 = phase-to-phase voltages (U) + Vo (Residual measurement) Variant 2 + variant 3 = phase-to-neutral voltages (V) + Vo (Residual measurement) ...
AD8571
... combine low cost with high accuracy. (No external capacitors are required.) Using a patented spread-spectrum, auto-zero technique, the AD857x family eliminates the intermodulation effects from interaction of the chopping function with the signal frequency in ac applications. With an offset voltage o ...
... combine low cost with high accuracy. (No external capacitors are required.) Using a patented spread-spectrum, auto-zero technique, the AD857x family eliminates the intermodulation effects from interaction of the chopping function with the signal frequency in ac applications. With an offset voltage o ...
AP3154A
... The AP3154A is designed for white LED applications. An internal comparator circuit compares the voltage at each constant current sink input against a reference voltage. To ensure maximum power efficiency, the most appropriate switching mode (x1, x1.5, x2) is automatically selected. In applications, ...
... The AP3154A is designed for white LED applications. An internal comparator circuit compares the voltage at each constant current sink input against a reference voltage. To ensure maximum power efficiency, the most appropriate switching mode (x1, x1.5, x2) is automatically selected. In applications, ...
Gordon Brockhouse talks to Sunfire`s Bob Carver Few figures have
... audio circuitry functions as a tap, modulating the flow of energy from that big reservoir. How does your design differ from this model? BC: Instead of feeding the amplifier directly, the reservoir after the bridge rectifier and power transformer feeds the input to the tracking downconverter. The out ...
... audio circuitry functions as a tap, modulating the flow of energy from that big reservoir. How does your design differ from this model? BC: Instead of feeding the amplifier directly, the reservoir after the bridge rectifier and power transformer feeds the input to the tracking downconverter. The out ...
understanding voltage stability - Sacramento
... start at a basic level, the reader is expected to understand vectors, power flow, and be familiar with how power system elements are modeled. ...
... start at a basic level, the reader is expected to understand vectors, power flow, and be familiar with how power system elements are modeled. ...
High Step-up Boost Converter Integrated With a Transformer
... transformer, an additional voltage snubber is needed to limit the switch voltage spikes caused by the transformer leakage inductance. In addition, an auxiliary circuit for operation below 0.5 duty cycles is required. Among the abovementioned high step-up circuits, a coupledinductor-based circuit see ...
... transformer, an additional voltage snubber is needed to limit the switch voltage spikes caused by the transformer leakage inductance. In addition, an auxiliary circuit for operation below 0.5 duty cycles is required. Among the abovementioned high step-up circuits, a coupledinductor-based circuit see ...
BD9D321EFJ
... (Note 1) No need to exceed Pd. (Note 2) Derating in done 30.08 mW/°C for operating above Ta ≥ 25°C (Mount on 4-layer 70.0mm×70.0mm×1.6mm board) Caution1: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit bet ...
... (Note 1) No need to exceed Pd. (Note 2) Derating in done 30.08 mW/°C for operating above Ta ≥ 25°C (Mount on 4-layer 70.0mm×70.0mm×1.6mm board) Caution1: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit bet ...
Development of a 60 kHz, 180 kW, Over 85% Efficiency Inductive
... Since the 1970s, most urban rail systems have been powered by overhead wires (or 3rd rails) and onboard pantographs. The overhead wire was a key enabling technology for electric trains. However, this conventional contact-based power supply system caused several issues: firstly, the mechanical wear o ...
... Since the 1970s, most urban rail systems have been powered by overhead wires (or 3rd rails) and onboard pantographs. The overhead wire was a key enabling technology for electric trains. However, this conventional contact-based power supply system caused several issues: firstly, the mechanical wear o ...
SERIES 18H AC Flux Vector Control
... Electronic Pot 3 Wire Control Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... Electronic Pot 3 Wire Control Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
AP1184 General Description Features
... without the disadvantage of the extra power dissipation due to the base current associated with PNP regulators. This is done by bringing out the control pin of the regulator that provides the base current to the power NPN and connecting it to a voltage that is greater than the voltage present at the ...
... without the disadvantage of the extra power dissipation due to the base current associated with PNP regulators. This is done by bringing out the control pin of the regulator that provides the base current to the power NPN and connecting it to a voltage that is greater than the voltage present at the ...
MAX5955/MAX5956 Low-Voltage, Dual Hot-Swap Controllers with Independent On/Off Control General Description
... event of a fault condition, the load is disconnected. The MAX5955B and MAX5956B must be unlatched after a fault, and the MAX5955A and MAX5956A automatically restart after a fault. The MAX5955 and MAX5956 integrate an on-board charge pump to drive the gates of low-cost, external nchannel MOSFETs. The ...
... event of a fault condition, the load is disconnected. The MAX5955B and MAX5956B must be unlatched after a fault, and the MAX5955A and MAX5956A automatically restart after a fault. The MAX5955 and MAX5956 integrate an on-board charge pump to drive the gates of low-cost, external nchannel MOSFETs. The ...
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.