Transforme
... Transformer is a static piece of apparatus by means of which power in one circuit is transformed into electric power of the same frequency in another circuit. ...
... Transformer is a static piece of apparatus by means of which power in one circuit is transformed into electric power of the same frequency in another circuit. ...
AMS2905 数据手册DataSheet 下载
... The total thermal resistance from junction to ambient can be as low as 45°C/W. This requires a reasonable sized PC board with at least on layer of copper to spread the heat across the board and couple it into the surrounding air. Experiments have shown that the heat spreading copper layer does not n ...
... The total thermal resistance from junction to ambient can be as low as 45°C/W. This requires a reasonable sized PC board with at least on layer of copper to spread the heat across the board and couple it into the surrounding air. Experiments have shown that the heat spreading copper layer does not n ...
MAX258 500mA, Push-Pull Transformer Driver for Isolated Power Supplies General Description
... the maximum allowable magnetic flux density in a transformer core to the voltage across a winding and switching period. Inductor magnetizing current in the primary winding changes linearly with time during the switching period of the device. Each transformer has a minimum ET product, though not alwa ...
... the maximum allowable magnetic flux density in a transformer core to the voltage across a winding and switching period. Inductor magnetizing current in the primary winding changes linearly with time during the switching period of the device. Each transformer has a minimum ET product, though not alwa ...
Cálculo de Puesta a Tierra
... IEEE Std 80 Table 7 gives typical values for surface layer material resistivity in dry and wet conditions (e.g. 40mm crushed granite = 4,000 Ω.m (dry) and 1,200 Ω.m (wet)). The effective resistance of a person's feet (with respect to earth) when standing on a surface layer is not the same as the sur ...
... IEEE Std 80 Table 7 gives typical values for surface layer material resistivity in dry and wet conditions (e.g. 40mm crushed granite = 4,000 Ω.m (dry) and 1,200 Ω.m (wet)). The effective resistance of a person's feet (with respect to earth) when standing on a surface layer is not the same as the sur ...
3200 Calibration - RCD Testers
... Breaker) and GFI (Ground Fault Interrupt). The devices operate by sensing when the current in the phase and neutral conductors within an installation are not equal and opposite. Any imbalance would imply that an additional path existed for the current to flow, invariably through the earth due to exc ...
... Breaker) and GFI (Ground Fault Interrupt). The devices operate by sensing when the current in the phase and neutral conductors within an installation are not equal and opposite. Any imbalance would imply that an additional path existed for the current to flow, invariably through the earth due to exc ...
proper selection of control circuit transformers
... The transformers used in this application fall into the dry type insulation category. Typical primary voltages in the United States are 600, 480, 240, and 208. Transformers can also be manufactured with special primary and secondary voltage combinations. There are two VA values to be considered when ...
... The transformers used in this application fall into the dry type insulation category. Typical primary voltages in the United States are 600, 480, 240, and 208. Transformers can also be manufactured with special primary and secondary voltage combinations. There are two VA values to be considered when ...
SERVICE MANUAL
... on the TV with the back removed. 1.1 Do not attempt to service this TV if you are not conversant with the precautions and procedures for working on high voltage equipment. 1.2 When handling or working on the CRT, always discharge the anode to the TV chassis before removing the anode cap in case of e ...
... on the TV with the back removed. 1.1 Do not attempt to service this TV if you are not conversant with the precautions and procedures for working on high voltage equipment. 1.2 When handling or working on the CRT, always discharge the anode to the TV chassis before removing the anode cap in case of e ...
1 - Design Automation Laboratory
... Calculation effective loop inductance (Leff) of signal trace T2 ...
... Calculation effective loop inductance (Leff) of signal trace T2 ...
Forward Type Switched Mode Power Supply
... inductor and capacitor magnitudes should be sufficiently large. However, in order to keep the filter cost and its physical size small these elements should not be unnecessarily too large. Also, for faster dynamic control over the output voltage the filter elements should not be too large. [It may be ...
... inductor and capacitor magnitudes should be sufficiently large. However, in order to keep the filter cost and its physical size small these elements should not be unnecessarily too large. Also, for faster dynamic control over the output voltage the filter elements should not be too large. [It may be ...
MAX8867/MAX8868 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 _______________General Description
... The MAX8867/MAX8868 low-noise, low-dropout linear regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. Typical output noise for these devices is just 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 2.5V to 5.0V, in 100mV ...
... The MAX8867/MAX8868 low-noise, low-dropout linear regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. Typical output noise for these devices is just 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 2.5V to 5.0V, in 100mV ...
PQ_Unit II
... customers, who potentially may be affected by the disturbance. Installing current-limiting reactors at strategic points of the system in order to increase electrical distance to the fault. It should, however, be remembered that this action may make a voltage dip deeper for other customers. Suppl ...
... customers, who potentially may be affected by the disturbance. Installing current-limiting reactors at strategic points of the system in order to increase electrical distance to the fault. It should, however, be remembered that this action may make a voltage dip deeper for other customers. Suppl ...
JH2416211626
... are existing to reduce dynamic power, Multi-VDD is efficient. Dynamic power is directly proportional to power supply. Hence naturally reducing power significantly improves the power performance. At the same time gate delay increases due to the decreased threshold voltage. High voltage can be applied ...
... are existing to reduce dynamic power, Multi-VDD is efficient. Dynamic power is directly proportional to power supply. Hence naturally reducing power significantly improves the power performance. At the same time gate delay increases due to the decreased threshold voltage. High voltage can be applied ...
Methodology for relative location of voltage sag source using
... of real and synthetic voltage sags, mainly caused by network faults. The fundamental condition for its application is the existence of current measurements in the electrical system. Thus, the purpose of this paper is to provide solutions for electrical distribution systems in which only voltage powe ...
... of real and synthetic voltage sags, mainly caused by network faults. The fundamental condition for its application is the existence of current measurements in the electrical system. Thus, the purpose of this paper is to provide solutions for electrical distribution systems in which only voltage powe ...
Microelectrode electronics
... The charge, Q (Coulombs), accumulated on the plates of a capacitor is proportional to the potential difference, V, between the plates, Q=C.V, where the capacitance C has dimensions of Farads (F). The energy difference between the plates due to the potential difference (Volts=Joules/Coulomb) is absor ...
... The charge, Q (Coulombs), accumulated on the plates of a capacitor is proportional to the potential difference, V, between the plates, Q=C.V, where the capacitance C has dimensions of Farads (F). The energy difference between the plates due to the potential difference (Volts=Joules/Coulomb) is absor ...
XADC Layout Guidelines
... Due to the differential sampling technique, channel input pairs (the P and N input signals) should be routed as close as possible to one another (minimum spacing). On the KC705 layout, 5 mil (127 micron) traces were placed at a spacing of 6 mils (150 microns) wherever possible. This helps ensure tha ...
... Due to the differential sampling technique, channel input pairs (the P and N input signals) should be routed as close as possible to one another (minimum spacing). On the KC705 layout, 5 mil (127 micron) traces were placed at a spacing of 6 mils (150 microns) wherever possible. This helps ensure tha ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... exhibits a similar behavior to the SVC. However, it is seen by the system as asource of synchronous voltage, while the SVC is seen as a variable admittance [3][4].From the reactive power point of view, the StatCom provides operating characteristics similar toa rotating synchronous compensator withou ...
... exhibits a similar behavior to the SVC. However, it is seen by the system as asource of synchronous voltage, while the SVC is seen as a variable admittance [3][4].From the reactive power point of view, the StatCom provides operating characteristics similar toa rotating synchronous compensator withou ...
PDF
... FACTS devices in power systems [2-3]. power flows are very high and the SVC’s are The secure operation of power system has connected at the receiving end buses of the other become an important and critical issue in today’s lines where major reactive power take place. A BAT large, complex and load in ...
... FACTS devices in power systems [2-3]. power flows are very high and the SVC’s are The secure operation of power system has connected at the receiving end buses of the other become an important and critical issue in today’s lines where major reactive power take place. A BAT large, complex and load in ...
A Modular Subsea Direct-Current Electrical
... Converter modules are symmetrically connected on both ends of the transmission line. Therefore, identical control architectures can be used at the module level (local control). The simplified control architecture of the system is shown in Fig. 3. Local module controls are designed to operate autonom ...
... Converter modules are symmetrically connected on both ends of the transmission line. Therefore, identical control architectures can be used at the module level (local control). The simplified control architecture of the system is shown in Fig. 3. Local module controls are designed to operate autonom ...
Ground (electricity)
In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.Electrical circuits may be connected to ground (earth) for several reasons. In mains powered equipment, exposed metal parts are connected to ground to prevent user contact with dangerous voltage if electrical insulation fails. Connections to ground limit the build-up of static electricity when handling flammable products or electrostatic-sensitive devices. In some telegraph and power transmission circuits, the earth itself can be used as one conductor of the circuit, saving the cost of installing a separate return conductor (see single-wire earth return).For measurement purposes, the Earth serves as a (reasonably) constant potential reference against which other potentials can be measured. An electrical ground system should have an appropriate current-carrying capability to serve as an adequate zero-voltage reference level. In electronic circuit theory, a ""ground"" is usually idealized as an infinite source or sink for charge, which can absorb an unlimited amount of current without changing its potential. Where a real ground connection has a significant resistance, the approximation of zero potential is no longer valid. Stray voltages or earth potential rise effects will occur, which may create noise in signals or if large enough will produce an electric shock hazard.The use of the term ground (or earth) is so common in electrical and electronics applications that circuits in portable electronic devices such as cell phones and media players as well as circuits in vehicles may be spoken of as having a ""ground"" connection without any actual connection to the Earth, despite ""common"" being a more appropriate term for such a connection. This is usually a large conductor attached to one side of the power supply (such as the ""ground plane"" on a printed circuit board) which serves as the common return path for current from many different components in the circuit.