AE01414711478
... protective devices. Thus, for many critical applications, some type of excitation support system is required f o r self excited generators. These systems, often referred as field forcing schemes , produce more than rated generator current for sufficient t time to ensure that the fault are cleared qu ...
... protective devices. Thus, for many critical applications, some type of excitation support system is required f o r self excited generators. These systems, often referred as field forcing schemes , produce more than rated generator current for sufficient t time to ensure that the fault are cleared qu ...
D N IAGNOSTIC EWS
... of CT classification e.g. C-100. A CT core can become magnetized; when the current is interrupted and becomes zero but the flux may not become zero, or while performing DC tests such as winding resistance. Before the ratio or excitation test is made and/or before the CT goes into service, the CT sho ...
... of CT classification e.g. C-100. A CT core can become magnetized; when the current is interrupted and becomes zero but the flux may not become zero, or while performing DC tests such as winding resistance. Before the ratio or excitation test is made and/or before the CT goes into service, the CT sho ...
DC microgrids (droop control)
... controlling the prime mover’s torque. By “commanding” a decrease in frequency, the output power will increase. • A similar approach is followed with reactive power control, by controlling field excitation in an attempt to change output voltage. Higher commanded frequencies ...
... controlling the prime mover’s torque. By “commanding” a decrease in frequency, the output power will increase. • A similar approach is followed with reactive power control, by controlling field excitation in an attempt to change output voltage. Higher commanded frequencies ...
ES6U3
... Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no respo ...
... Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no respo ...
Constant-Voltage, Constant-Current Controller With Primary
... operates in discontinuous conduction mode with valley-switching to minimize switching losses. The modulation scheme is a combination of frequency and primary peak current modulation to provide high conversion efficiency across the load range. The control law provides a wide-dynamic operating range o ...
... operates in discontinuous conduction mode with valley-switching to minimize switching losses. The modulation scheme is a combination of frequency and primary peak current modulation to provide high conversion efficiency across the load range. The control law provides a wide-dynamic operating range o ...
A method of nonlinearities of transformer no
... Presented measurements have been made as comparative and diagnostic tests. From that reason obtained values were measured with single-phase supply of the low voltage winding. There are differences between values of no-load currents of each phase due to an unsymmetrical three-limb core used in distri ...
... Presented measurements have been made as comparative and diagnostic tests. From that reason obtained values were measured with single-phase supply of the low voltage winding. There are differences between values of no-load currents of each phase due to an unsymmetrical three-limb core used in distri ...
AN51 - Power Conditioning for Notebook and Palmtop Systems
... switching ripple at the VC pin. A floating 5V power supply for the switcher is generated by D2 and C3 which peak detect the output voltage during switch “off” time. This is a very efficient way of powering the switcher because power drain does not increase with regulator input voltage. However, the ...
... switching ripple at the VC pin. A floating 5V power supply for the switcher is generated by D2 and C3 which peak detect the output voltage during switch “off” time. This is a very efficient way of powering the switcher because power drain does not increase with regulator input voltage. However, the ...
arc flash FREQUENTLY ASKED QUESTIONS
... OSHA mandates that employers identify electrical hazards, warn their workers about them and provide the proper protective equipment and training related to working around the hazards. OSHA provides the employer "what" to do, but does not define "how" to do it. The role of NFPA 70E, IEEE and NEC is t ...
... OSHA mandates that employers identify electrical hazards, warn their workers about them and provide the proper protective equipment and training related to working around the hazards. OSHA provides the employer "what" to do, but does not define "how" to do it. The role of NFPA 70E, IEEE and NEC is t ...
sc2440tetrt
... soft-start and overload shutoff times of the regulator (Figure 3). The SS pin can also be used to shut off the corresponding regulator. When either SS pin is pulled below 0.8V, that regulator is turned off. If both SS pins are pulled below 0.2V, then the SC2440 undergoes overall shutdown. The curren ...
... soft-start and overload shutoff times of the regulator (Figure 3). The SS pin can also be used to shut off the corresponding regulator. When either SS pin is pulled below 0.8V, that regulator is turned off. If both SS pins are pulled below 0.2V, then the SC2440 undergoes overall shutdown. The curren ...
GBPC 12, 15, 25, 35 SERIES Bridge Rectifiers (Glass Passivated) GBPC 1
... cause the failure of the life support device or system, or to affect its accordance with instructions for use provided in the labeling, can be safety or effectiveness. reasonably expected to result in a significant injury of the user. ANTI-COUNTERFEITING POLICY Fairchild Semiconductor Corporation's ...
... cause the failure of the life support device or system, or to affect its accordance with instructions for use provided in the labeling, can be safety or effectiveness. reasonably expected to result in a significant injury of the user. ANTI-COUNTERFEITING POLICY Fairchild Semiconductor Corporation's ...
UM1016
... the operation of the relay. The voltage sensor needs a +/-15 V supply voltage which is provided by means of a multi-wire cable running from J5 on the power supply board to the 3way screw terminal connector, called VDC, on the output sensing board. The +15 V is also used to obtain the +5 V supplying ...
... the operation of the relay. The voltage sensor needs a +/-15 V supply voltage which is provided by means of a multi-wire cable running from J5 on the power supply board to the 3way screw terminal connector, called VDC, on the output sensing board. The +15 V is also used to obtain the +5 V supplying ...
Mercury-arc valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.