Induction Motors
... value of effective resistance at starting and a low value of the resistance at fullload operation. It consists of two layers of bars, both short-circuited by end rings. The upper bars are small in cross-section and have a high resistance. They are placed near the rotor surface so that the leak ...
... value of effective resistance at starting and a low value of the resistance at fullload operation. It consists of two layers of bars, both short-circuited by end rings. The upper bars are small in cross-section and have a high resistance. They are placed near the rotor surface so that the leak ...
Energy Management for Motor-Driven Systems
... (BPA) for funding this project. Particular thanks are due to Craig Wohlgemuth of Bonneville’s Technical Assessment/R&D Group for his encouragement, direction and support. Portions of this guidebook have been adapted from two unpublished ...
... (BPA) for funding this project. Particular thanks are due to Craig Wohlgemuth of Bonneville’s Technical Assessment/R&D Group for his encouragement, direction and support. Portions of this guidebook have been adapted from two unpublished ...
Power System Protection
... Ampere Pickup (P.U.) = CT Ratio x A.T. Setting Relay Current (IR) = Actual Line Current (IL) / CT ...
... Ampere Pickup (P.U.) = CT Ratio x A.T. Setting Relay Current (IR) = Actual Line Current (IL) / CT ...
MAX1677 Compact, High-Efficiency, Dual-Output Step-Up and LCD Bias DC-DC Converter General Description
... it ideal for hand-held pen-input and PDA devices operating with low-current “sleep” states. The MAX1677’s primary regulator supplies up to 350mA at either a factory-preset 3.3V or an adjustable 2.5V to 5.5V output. On-chip synchronous rectification provides efficiencies up to 95%. 300kHz (or externa ...
... it ideal for hand-held pen-input and PDA devices operating with low-current “sleep” states. The MAX1677’s primary regulator supplies up to 350mA at either a factory-preset 3.3V or an adjustable 2.5V to 5.5V output. On-chip synchronous rectification provides efficiencies up to 95%. 300kHz (or externa ...
DCDC Converter SupIRBuck IR3846
... optimizing the design in terms of size and performance. IR3846 provides precisely regulated output voltage programmed via two external resistors from 0.6V to 0.86*PVin. The IR3846 operates with an internal bias supply (LDO) which is connected to the VCC pin. This allows operation with single supply. ...
... optimizing the design in terms of size and performance. IR3846 provides precisely regulated output voltage programmed via two external resistors from 0.6V to 0.86*PVin. The IR3846 operates with an internal bias supply (LDO) which is connected to the VCC pin. This allows operation with single supply. ...
Lecture2 - WordPress.com
... Alternating voltage and current • Electricity is produced by generators at power station. • Electricity is then distributed by a vast network of transmission lines called National Grid System. • It is easier and cheaper to generate AC than DC. • It is more convenient to distribute AC than DC since ...
... Alternating voltage and current • Electricity is produced by generators at power station. • Electricity is then distributed by a vast network of transmission lines called National Grid System. • It is easier and cheaper to generate AC than DC. • It is more convenient to distribute AC than DC since ...
Three-Phase Power Quality Analyzer PowerPad Model 3945-B
... look inside your electrical system and see what’s going on? Troubleshooting would be so much easier if you could see the volts, amps and harmonic content in real time and take pictures to document and analyze. Now you can do just that and more with AEMC’s PowerPad. The full color graphical display l ...
... look inside your electrical system and see what’s going on? Troubleshooting would be so much easier if you could see the volts, amps and harmonic content in real time and take pictures to document and analyze. Now you can do just that and more with AEMC’s PowerPad. The full color graphical display l ...
AN-107 - IXYS Integrated Circuits Division
... • Medical: EEG and ECG machines have sensors that attach to the patient. The sensors are galvanically isolated to provide a high voltage isolation barrier between patient and machine. • Instrumentation: Instruments often use isolated switching supplies where it is required to sense the output voltag ...
... • Medical: EEG and ECG machines have sensors that attach to the patient. The sensors are galvanically isolated to provide a high voltage isolation barrier between patient and machine. • Instrumentation: Instruments often use isolated switching supplies where it is required to sense the output voltag ...
QUICKTRONIC® PROStart® T5HO 347-480V
... Key System Features ■ 90°C maximum case temp. ■ 347-480V input voltage range ■ Low-profile (1.00" High) ■ 100% Ballast factor ■ QUICKSENSE® ballast technology (end-of-lamp-life sensing) ■ PROStart programmed start ■ Occupancy sensor applications ...
... Key System Features ■ 90°C maximum case temp. ■ 347-480V input voltage range ■ Low-profile (1.00" High) ■ 100% Ballast factor ■ QUICKSENSE® ballast technology (end-of-lamp-life sensing) ■ PROStart programmed start ■ Occupancy sensor applications ...
AL8807EV2 User Guide - Diodes Incorporated
... In normal operation, when voltage is applied at +Vin, the AL8807 internal NDMOS switch is turned on. Current starts to flow through sense resistor R1, inductor L1, and the LED. The current ramps up linearly, and the ramp rate is determined by the input voltage +Vin and the inductor L1. This rising c ...
... In normal operation, when voltage is applied at +Vin, the AL8807 internal NDMOS switch is turned on. Current starts to flow through sense resistor R1, inductor L1, and the LED. The current ramps up linearly, and the ramp rate is determined by the input voltage +Vin and the inductor L1. This rising c ...
AVR2038: AT86RF231 Range Extension 8
... References. Additional low pass filtering (L4/5, C28/29) between RX/TX switch U7 and antenna may be required to further suppress harmonics caused by the limited isolation of the 2/1 RF switch. The amount of harmonic filtering has to be aligned to regional requirements. For instance, operating the de ...
... References. Additional low pass filtering (L4/5, C28/29) between RX/TX switch U7 and antenna may be required to further suppress harmonics caused by the limited isolation of the 2/1 RF switch. The amount of harmonic filtering has to be aligned to regional requirements. For instance, operating the de ...
XTR105 - Iiic.Cc
... requirements may be lower if the loop power-supply voltage is less than 36V. Some possible choices for Q1 are listed in Figure 1. The XTR105 can be operated without this external transistor, however, accuracy will be somewhat degraded due to the internal power dissipation. Operation without Q1 is no ...
... requirements may be lower if the loop power-supply voltage is less than 36V. Some possible choices for Q1 are listed in Figure 1. The XTR105 can be operated without this external transistor, however, accuracy will be somewhat degraded due to the internal power dissipation. Operation without Q1 is no ...
Direct driving of LCD-modules
... pulses is increased the reflectance of the planar state cells is linearly reduced, until it is down at the focal conic level at V2. Between V2 and V3 the cholesteric liquid is in the focal conic state. Between V3 and V4 the reflectance increases sharply and pulses with voltages higher than V4 put th ...
... pulses is increased the reflectance of the planar state cells is linearly reduced, until it is down at the focal conic level at V2. Between V2 and V3 the cholesteric liquid is in the focal conic state. Between V3 and V4 the reflectance increases sharply and pulses with voltages higher than V4 put th ...
Industrial Static Var Compensator (SVC)
... or relocatable. While outdoor equipment is usually built as fixed structures, indoor equipment is often located within a container that is easily relocatable. It is possible to use a modular design of the SVC. This makes transportation, installation and commissioning at the site fast and easy. ...
... or relocatable. While outdoor equipment is usually built as fixed structures, indoor equipment is often located within a container that is easily relocatable. It is possible to use a modular design of the SVC. This makes transportation, installation and commissioning at the site fast and easy. ...
AN21 - Composite Amplifiers
... designed with little attention to DC biasing considerations if a separate stabilizing stage is employed. Figure 1 shows a composite made up of an LT®1012 low drift device and an LT1022 high speed amplifier. The overall circuit is a unity-gain inverter, with the summing node located at the junction of ...
... designed with little attention to DC biasing considerations if a separate stabilizing stage is employed. Figure 1 shows a composite made up of an LT®1012 low drift device and an LT1022 high speed amplifier. The overall circuit is a unity-gain inverter, with the summing node located at the junction of ...
Taser International, Inc. v. Stinger Systmes, Inc., Case No. CV 07
... negative polarity, but a bridge rectifier circuit on the secondary reversed the voltage so that ...
... negative polarity, but a bridge rectifier circuit on the secondary reversed the voltage so that ...
Electronic Devices and Circuit Theory
... The operation is a basic comparison. The output swings between its maximum and minimum voltage, depending on whether one input (Vin) is greater or less than the other (Vref). The output is always a square wave where: The maximum high output voltage is +VSAT. The minimum low output voltage is –VSAT. ...
... The operation is a basic comparison. The output swings between its maximum and minimum voltage, depending on whether one input (Vin) is greater or less than the other (Vref). The output is always a square wave where: The maximum high output voltage is +VSAT. The minimum low output voltage is –VSAT. ...
Industrial Static Var Compensator (SVC)
... or relocatable. While outdoor equipment is usually built as fixed structures, indoor equipment is often located within a container that is easily relocatable. It is possible to use a modular design of the SVC. This makes transportation, installation and commissioning at the site fast and easy. ...
... or relocatable. While outdoor equipment is usually built as fixed structures, indoor equipment is often located within a container that is easily relocatable. It is possible to use a modular design of the SVC. This makes transportation, installation and commissioning at the site fast and easy. ...
2SAR562F3
... 2) Before you use our Products, please contact our sales representative and verify the latest specifications : 3) Although ROHM is continuously working to improve product reliability and quality, semiconductors can break down and malfunction due to various factors. Therefore, in order to prevent per ...
... 2) Before you use our Products, please contact our sales representative and verify the latest specifications : 3) Although ROHM is continuously working to improve product reliability and quality, semiconductors can break down and malfunction due to various factors. Therefore, in order to prevent per ...
BFR380L3
... liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. ...
... liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. ...
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.