Direct-AC, Linear LED Driver Topology: CCR Straight
... High power factor across voltage range. Modular design flexibility, can accommodate many functions (EMI filter, OVP, etc.) Compatible with most phase-cut dimmers. Adjustable for different LED voltages. Scalable for different currents/power levels. Predictable electrical performance ...
... High power factor across voltage range. Modular design flexibility, can accommodate many functions (EMI filter, OVP, etc.) Compatible with most phase-cut dimmers. Adjustable for different LED voltages. Scalable for different currents/power levels. Predictable electrical performance ...
Part 1: Choosing Flux Linkage As An Independent Variable
... of electric motors and solenoids. In an approximate but useful form of the analysis, magnetic hysteresis is ignored, and eddy currents are approximated by a “shorted-turn” circuit model. The analysis of this paper relies on these approximations but allows for the later introduction of magnetic satur ...
... of electric motors and solenoids. In an approximate but useful form of the analysis, magnetic hysteresis is ignored, and eddy currents are approximated by a “shorted-turn” circuit model. The analysis of this paper relies on these approximations but allows for the later introduction of magnetic satur ...
- UTas ePrints
... rectifier diode-bridge is utilised in the proposed SRFCL as shown in Fig. 1. Overall, by applying the proposed SRFCL, the DFIG can ride through the voltage sag during the fault. In the proposed LVRT configuration, the resistor in parallel connection with the SS is employed to consume the excess acti ...
... rectifier diode-bridge is utilised in the proposed SRFCL as shown in Fig. 1. Overall, by applying the proposed SRFCL, the DFIG can ride through the voltage sag during the fault. In the proposed LVRT configuration, the resistor in parallel connection with the SS is employed to consume the excess acti ...
Full PDF
... used for lighting or motors, so transmission-level voltages must be reduced for end-use equipment. Transformers are used to change the voltage levels in alternating current (AC) transmission circuits. Because transformers made voltage changes practical, and AC generators were more efficient than tho ...
... used for lighting or motors, so transmission-level voltages must be reduced for end-use equipment. Transformers are used to change the voltage levels in alternating current (AC) transmission circuits. Because transformers made voltage changes practical, and AC generators were more efficient than tho ...
BD9C601EFJ
... digital and analog blocks to prevent noise in the ground and supply lines of the digital block from affecting the analog block. Furthermore, connect a capacitor to ground at all power supply pins. Consider the effect of temperature and aging on the capacitance value when using electrolytic capacitor ...
... digital and analog blocks to prevent noise in the ground and supply lines of the digital block from affecting the analog block. Furthermore, connect a capacitor to ground at all power supply pins. Consider the effect of temperature and aging on the capacitance value when using electrolytic capacitor ...
LM3914 Dot/Bar Display Driver (Rev. B)
... programmable, eliminating the need for resistors. This feature is one that allows operation of the whole system from less than 3V. The circuit contains its own adjustable reference and accurate 10-step voltage divider. The low-bias-current input buffer accepts signals down to ground, or V−, yet need ...
... programmable, eliminating the need for resistors. This feature is one that allows operation of the whole system from less than 3V. The circuit contains its own adjustable reference and accurate 10-step voltage divider. The low-bias-current input buffer accepts signals down to ground, or V−, yet need ...
RF6590 POWER MANAGEMENT IC Features
... Since Output 1 is pre-charge the controller starts in forced PFM for ~10s, giving the transceiver internal LDO time to shutdown. This is described as the override mode of operation for Output 1. Output 1 DC to DC converter will run (per SPI programmability) in auto PFM/PWM mode, based on load curre ...
... Since Output 1 is pre-charge the controller starts in forced PFM for ~10s, giving the transceiver internal LDO time to shutdown. This is described as the override mode of operation for Output 1. Output 1 DC to DC converter will run (per SPI programmability) in auto PFM/PWM mode, based on load curre ...
Pad-Mounted Single-Phase 32-Step Voltage
... The regulators furnished under this specification shall be designed, manufactured, and tested in accordance with IEEE Standard C57.15-1999™. That standard shall be a part of this specification. Regulator rating and operating voltage shall be as specified on the inquiry. Refer to Table 1 for the avai ...
... The regulators furnished under this specification shall be designed, manufactured, and tested in accordance with IEEE Standard C57.15-1999™. That standard shall be a part of this specification. Regulator rating and operating voltage shall be as specified on the inquiry. Refer to Table 1 for the avai ...
Design Comparison of Round and Rectangular Wire Winding
... and full load losses are also described in detail. Index Terms—Distribution transformer, step core, core type, round and rectangular, tank and temperature rise. I. INTRODUCTION A transformer is a static device that transfers electrical energy from one circuit to another by electromagnetic induction ...
... and full load losses are also described in detail. Index Terms—Distribution transformer, step core, core type, round and rectangular, tank and temperature rise. I. INTRODUCTION A transformer is a static device that transfers electrical energy from one circuit to another by electromagnetic induction ...
Novel 9-Steps Automatic Voltage Regulator based on Two Step
... level of voltage to the load. For example, during one jump of voltage controlling let from 240 V to 230 V, this means the relay contacts will connect firstly 240 V then for a short period which during jumping motion there is no voltage from supply to the load i.e. 0 V then connect 230 V to the AC lo ...
... level of voltage to the load. For example, during one jump of voltage controlling let from 240 V to 230 V, this means the relay contacts will connect firstly 240 V then for a short period which during jumping motion there is no voltage from supply to the load i.e. 0 V then connect 230 V to the AC lo ...
New Electric Reluctance Motor with Bulk Superconducting Materials
... 70% than that of a correspondent conventional machine can be attained. Pre-magnetisation of these rotors by field cooling is explained and this process gives a mechanical output power 4 to 5 times better than that of a conventional reluctance machine. 1 Introduction Conventional reluctance motor the ...
... 70% than that of a correspondent conventional machine can be attained. Pre-magnetisation of these rotors by field cooling is explained and this process gives a mechanical output power 4 to 5 times better than that of a conventional reluctance machine. 1 Introduction Conventional reluctance motor the ...
Si8220/21 - Silicon Labs
... The Si8220/21 is a high-performance functional upgrade for opto-coupled drivers, such as the HCPL-3120 and the HPCL-0302 providing 2.5 A of peak output current. It utilizes Silicon Laboratories' proprietary silicon isolation technology, which provides a choice of 2.5, 3.75, or 5.0 kVRMS withstand vo ...
... The Si8220/21 is a high-performance functional upgrade for opto-coupled drivers, such as the HCPL-3120 and the HPCL-0302 providing 2.5 A of peak output current. It utilizes Silicon Laboratories' proprietary silicon isolation technology, which provides a choice of 2.5, 3.75, or 5.0 kVRMS withstand vo ...
PS9308L, PS9308L2 Data Sheet Preliminary
... Be aware that when voltage is applied suddenly between the photocoupler’s input and output at startup, the output transistor may enter the on state, even if the voltage is within the absolute maximum ratings. ...
... Be aware that when voltage is applied suddenly between the photocoupler’s input and output at startup, the output transistor may enter the on state, even if the voltage is within the absolute maximum ratings. ...
Physics of Semiconductor Devices
... Another type of circuit that produces the same output as a full – wave rectifier is that of the bridge rectifier. This type of single phase rectifier uses 4 individual rectifying diodes connected in a bridged configuration to produce the desired output does not required special centre tapped transfo ...
... Another type of circuit that produces the same output as a full – wave rectifier is that of the bridge rectifier. This type of single phase rectifier uses 4 individual rectifying diodes connected in a bridged configuration to produce the desired output does not required special centre tapped transfo ...
SP232A
... capacitors should be mounted as close as possible to the IC and have a low ESR (equivalent series resistance). Inexpensive, surface mount ceramic capacitors are ideal for use on charge pump. If polarized capacitors are used the positive and negative terminals should be connected as shown on the typi ...
... capacitors should be mounted as close as possible to the IC and have a low ESR (equivalent series resistance). Inexpensive, surface mount ceramic capacitors are ideal for use on charge pump. If polarized capacitors are used the positive and negative terminals should be connected as shown on the typi ...
BD3506F
... resistance (ESR) of the capacitors is large, output voltage fluctuation is increased when load is rapidly changed. About 100-µF high-performance electrolytic capacitors are recommended but output capacitor greatly depends on temperature and load conditions. In addition, when only ceramic capacitors ...
... resistance (ESR) of the capacitors is large, output voltage fluctuation is increased when load is rapidly changed. About 100-µF high-performance electrolytic capacitors are recommended but output capacitor greatly depends on temperature and load conditions. In addition, when only ceramic capacitors ...
FAN73892 3-Phase Half-Bridge Gate-Drive IC FAN73892 — 3-Phase Hal
... An advanced level-shift circuit allows high-side gate driver operation up to VS = -9.8 V (typical) for VBS =15 V. The protection functions include under-voltage lockout and inverter over-current trip with an automatic faultclear function. Over-current protection that terminates all six outputs can b ...
... An advanced level-shift circuit allows high-side gate driver operation up to VS = -9.8 V (typical) for VBS =15 V. The protection functions include under-voltage lockout and inverter over-current trip with an automatic faultclear function. Over-current protection that terminates all six outputs can b ...
Voltage Level Translation Guide Auto-Direction Sensing Direction Controlled
... circuitry detects and speeds up AC-transitions to maintain fast data rate throughput • VCC isolation feature — if either VCC input is at GND, all outputs are in the high impedance state • Highly integrated ESD protection — ±15-kV ESD protection on the B port • Devices ending in E suffix include ...
... circuitry detects and speeds up AC-transitions to maintain fast data rate throughput • VCC isolation feature — if either VCC input is at GND, all outputs are in the high impedance state • Highly integrated ESD protection — ±15-kV ESD protection on the B port • Devices ending in E suffix include ...
Application Note
... 11. Apply input signals to X1. Note that high performance (low noise and low phase noise) sources must be used together with bandpass filters. This is necessary to obtain sufficiently low noise and harmonic distortion. 1 to 3dB attenuators can also be used between the filter and the evaluation boar ...
... 11. Apply input signals to X1. Note that high performance (low noise and low phase noise) sources must be used together with bandpass filters. This is necessary to obtain sufficiently low noise and harmonic distortion. 1 to 3dB attenuators can also be used between the filter and the evaluation boar ...
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.