doc00000 - Finite Element Method Magnetics
... where U=Jsrc, and U is the voltage applied to a conductor in which skin effect is to be calculated. (Equation (2) was taken from “Teoretska elektrotehnika” by Z. Haznadar) If I define a nonzero conductivity for conductors (bulk coils) and define such voltage which will give the real value of curre ...
... where U=Jsrc, and U is the voltage applied to a conductor in which skin effect is to be calculated. (Equation (2) was taken from “Teoretska elektrotehnika” by Z. Haznadar) If I define a nonzero conductivity for conductors (bulk coils) and define such voltage which will give the real value of curre ...
power and signal integrity improvement in ultra high
... power is being dissipated. Despite the large static power used in CML gates, most of the power is actually being dissipated in long wires and in support of long wires, particularly the clock-distribution network. The emitter followers used to drive long wires have good drive capability but also diss ...
... power is being dissipated. Despite the large static power used in CML gates, most of the power is actually being dissipated in long wires and in support of long wires, particularly the clock-distribution network. The emitter followers used to drive long wires have good drive capability but also diss ...
Proposal Slides
... Dual-VDD Dual-GND requires two separate grounds off-chip and complicates timing analysis and design of the board itself Multi-rail standard cells can be used to realize the Dual-VDD grids allows placer to operate with no constraints ...
... Dual-VDD Dual-GND requires two separate grounds off-chip and complicates timing analysis and design of the board itself Multi-rail standard cells can be used to realize the Dual-VDD grids allows placer to operate with no constraints ...
MAX1812 Dual USB Switch with Fault Blanking General Description Features
... specifically for USB applications. It has two independent switches, each with its own enable control input. Each switch also has an independent error flag output to notify the USB controller when the current-limit, shortcircuit, undervoltage-lockout, or thermal-shutdown threshold is reached (Figure ...
... specifically for USB applications. It has two independent switches, each with its own enable control input. Each switch also has an independent error flag output to notify the USB controller when the current-limit, shortcircuit, undervoltage-lockout, or thermal-shutdown threshold is reached (Figure ...
SELC 6000 HID Ballast Range
... High Intensity Discharge Ballast’s will cause the lamp to cycle sometimes long before the end of the lamp useful life. The SELC 6000 Range prevents this happening and maintains the lamp in an operational state well beyond this point, and will switch it off at the end of its life regardless of negati ...
... High Intensity Discharge Ballast’s will cause the lamp to cycle sometimes long before the end of the lamp useful life. The SELC 6000 Range prevents this happening and maintains the lamp in an operational state well beyond this point, and will switch it off at the end of its life regardless of negati ...
Evaluation Board User Guide UG-186
... For line regulation measurements, the regulator’s outputs are monitored while its input is varied. For good line regulation, the outputs must change as little as possible with varying input levels. To ensure that the device is not in dropout mode during this measurement, VIN must be varied between V ...
... For line regulation measurements, the regulator’s outputs are monitored while its input is varied. For good line regulation, the outputs must change as little as possible with varying input levels. To ensure that the device is not in dropout mode during this measurement, VIN must be varied between V ...
NCP3065, NCV3065 Up to 1.5 A Constant Current Switching Regulator for LEDs
... A constant current buck regulator such as the NCP3065 focuses on the control of the current through the load, not the voltage across it. The switching frequency of the NCP3065 is in the range of 100−250 kHz which is much higher than the human eye can detect. This allows us to relax the ripple curren ...
... A constant current buck regulator such as the NCP3065 focuses on the control of the current through the load, not the voltage across it. The switching frequency of the NCP3065 is in the range of 100−250 kHz which is much higher than the human eye can detect. This allows us to relax the ripple curren ...
LM2704 Micropower Step-up DC/DC Converter
... The LM2704 is a micropower step-up DC/DC in a small 5-lead SOT-23 package. A current limited, fixed off-time control scheme conserves operating current resulting in high efficiency over a wide range of load conditions. The 21V switch allows for output voltages as high as 20V. The low 400ns off-time ...
... The LM2704 is a micropower step-up DC/DC in a small 5-lead SOT-23 package. A current limited, fixed off-time control scheme conserves operating current resulting in high efficiency over a wide range of load conditions. The 21V switch allows for output voltages as high as 20V. The low 400ns off-time ...
Physics 121: Equipotential Surface Mapping Equipotential lines (or
... Equipotential lines (or surfaces in 3D) are set of points that have the same electrical potential. These define simple curves (lines in 2D or surfaces in 3D) that never cross each other. In practice, we cannot measure the potential at a point but we measure its potential difference with respect to a ...
... Equipotential lines (or surfaces in 3D) are set of points that have the same electrical potential. These define simple curves (lines in 2D or surfaces in 3D) that never cross each other. In practice, we cannot measure the potential at a point but we measure its potential difference with respect to a ...
IOTA DLS Power Converters and Battery Chargers for 48-Volt
... 1) Reverse Battery Polarity Protection. 2) Brown-Out Input Protection. 3) Over-Current Protection - cycle by cycle peak limiting as well as rated current limiting to maximize the life of the converter. 4) Over-Temperature Protection. In addition, it is designed with a unique “proportional” fan contr ...
... 1) Reverse Battery Polarity Protection. 2) Brown-Out Input Protection. 3) Over-Current Protection - cycle by cycle peak limiting as well as rated current limiting to maximize the life of the converter. 4) Over-Temperature Protection. In addition, it is designed with a unique “proportional” fan contr ...
UCP 3500 - Ward Davis Associates
... The power on/off circuit is the primary feature of the UCP 3500. Lighted on/off switches provide easily recognized status on the UCP, and connections on the back of the chassis allow for remote indication as well. Dry contacts, connected at the back panel, provide two channels of on/off control (eac ...
... The power on/off circuit is the primary feature of the UCP 3500. Lighted on/off switches provide easily recognized status on the UCP, and connections on the back of the chassis allow for remote indication as well. Dry contacts, connected at the back panel, provide two channels of on/off control (eac ...
Interrupting Rating
... A protective device must be able to withstand the destructive energy of shortcircuit currents. If a fault current exceeds a level beyond the capability of the protective device, the device may actually rupture, causing additional damage. Thus, it is important when applying a fuse or circuit breaker ...
... A protective device must be able to withstand the destructive energy of shortcircuit currents. If a fault current exceeds a level beyond the capability of the protective device, the device may actually rupture, causing additional damage. Thus, it is important when applying a fuse or circuit breaker ...
MAX17062 TFT-LCD Step-Up DC-DC Converter General Description Features
... Step-up regulators using the MAX17062 can be designed by performing simple calculations for a first iteration. All designs should be prototyped and tested prior to production. Table 1 provides a list of power components for the typical applications circuit (Figure 1). Table 2 lists component supplie ...
... Step-up regulators using the MAX17062 can be designed by performing simple calculations for a first iteration. All designs should be prototyped and tested prior to production. Table 1 provides a list of power components for the typical applications circuit (Figure 1). Table 2 lists component supplie ...
J.M. Rivas, T.A. Keim, and D.J. Perreault, “Performance Improvement of Alternators with Switched-Mode Rectifiers,” IEEE Transactions on Energy Conversion , Vol. 19, No. 3, Sept. 2004, pp. 561-568.
... the necessary degrees of freedom to enable more power to be delivered at idle speed. Three important observations are worth mentioning about possible modulations using an SMR. • The bottom MOSFETs of the SMR can only be effectively modulated while they carry positive current; during other periods, t ...
... the necessary degrees of freedom to enable more power to be delivered at idle speed. Three important observations are worth mentioning about possible modulations using an SMR. • The bottom MOSFETs of the SMR can only be effectively modulated while they carry positive current; during other periods, t ...
Reverse Voltage Behavior of Solid Tantalum Capacitors
... capacitor than is normally necessary. Figure 5 shows typical leakage currents for various rated capacitors under reverse voltage, and indicates that the higher the rated voltage of the capacitor, the lower the current during reverse orientation. A further option is to include a resistor in the power ...
... capacitor than is normally necessary. Figure 5 shows typical leakage currents for various rated capacitors under reverse voltage, and indicates that the higher the rated voltage of the capacitor, the lower the current during reverse orientation. A further option is to include a resistor in the power ...
LEP 4.2.03 Capacitance of metal spheres and of a spherical
... the high voltage power supply. This is done by means of a crocodile clip over the high voltage cord, before which a 10 MV protective resistor is connected. The lower socket is earthed again. Voltage is increased in steps of 100 V and may not increase above 1000 V for the safety of the digital multim ...
... the high voltage power supply. This is done by means of a crocodile clip over the high voltage cord, before which a 10 MV protective resistor is connected. The lower socket is earthed again. Voltage is increased in steps of 100 V and may not increase above 1000 V for the safety of the digital multim ...
Microelectromechanical Devices
... signals of one frequency (usually line frequency) to ac signals of variable frequency. These variable frequency ac signals can then be used to directly control the speed of ac motors. Thyristor-based cycloconverters are typically used in low speed, high power (multi-MW) applications for driving indu ...
... signals of one frequency (usually line frequency) to ac signals of variable frequency. These variable frequency ac signals can then be used to directly control the speed of ac motors. Thyristor-based cycloconverters are typically used in low speed, high power (multi-MW) applications for driving indu ...
Electrical substation
A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Between the generating station and consumer, electric power may flow through several substations at different voltage levels.Substations may be owned and operated by an electrical utility, or may be owned by a large industrial or commercial customer. Generally substations are unattended, relying on SCADA for remote supervision and control.A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages. The word substation comes from the days before the distribution system became a grid. As central generation stations became larger, smaller generating plants were converted to distribution stations, receiving their energy supply from a larger plant instead of using their own generators. The first substations were connected to only one power station, where the generators were housed, and were subsidiaries of that power station.