Glossary
... Parallel Lamp Operation: Refers to ballasts that employ multipleoutput current paths independent of one another, allowing other lamps operated by the ballast to remain lit should companion lamp(s) fail. Programmed Rapid Start (also Programmed Start): lamp starting method which preheats the lamp fila ...
... Parallel Lamp Operation: Refers to ballasts that employ multipleoutput current paths independent of one another, allowing other lamps operated by the ballast to remain lit should companion lamp(s) fail. Programmed Rapid Start (also Programmed Start): lamp starting method which preheats the lamp fila ...
On the Loading of Power Modules in a Three Phase Voltage Source
... current path is opened by the failed fuse. The nature of the VSC topology prohibits the traditional free wheel diode connected anti-parallel to the fuse as in the normal inverter configuration. The fuse selection is particularly troublesome due to the fatigue in dynamic applications with frequent ov ...
... current path is opened by the failed fuse. The nature of the VSC topology prohibits the traditional free wheel diode connected anti-parallel to the fuse as in the normal inverter configuration. The fuse selection is particularly troublesome due to the fatigue in dynamic applications with frequent ov ...
ADM1070 数据手册DataSheet 下载
... The ADM1070 is a negative voltage hot swap controller that allows a board to be safely inserted and removed from a live –48 V backplane. The part achieves this by providing robust current limiting, protection against transient and nontransient short circuits and overvoltage and undervoltage conditio ...
... The ADM1070 is a negative voltage hot swap controller that allows a board to be safely inserted and removed from a live –48 V backplane. The part achieves this by providing robust current limiting, protection against transient and nontransient short circuits and overvoltage and undervoltage conditio ...
Active Components
... • Suppressor Grid. • Reduces “splashback” of electrons from plate to screen grid. • At or near cathode potential. • Often directly connected to cathode. • Low current. ...
... • Suppressor Grid. • Reduces “splashback” of electrons from plate to screen grid. • At or near cathode potential. • Often directly connected to cathode. • Low current. ...
www.w9uuu.org
... • Suppressor Grid. • Reduces “splashback” of electrons from plate to screen grid. • At or near cathode potential. • Often directly connected to cathode. • Low current. ...
... • Suppressor Grid. • Reduces “splashback” of electrons from plate to screen grid. • At or near cathode potential. • Often directly connected to cathode. • Low current. ...
Discrete Wavelet Transforms for Synchronization of Power
... output voltage in a ac/dc converter maintaining unity power factor. A three-phase induction generator (IG) system for stand-alone power systems is controlled by means of one ac/dc plus one dc/ac converter and applying a recurrent wavelet neural network (RWNN) controller with improved particle swarm ...
... output voltage in a ac/dc converter maintaining unity power factor. A three-phase induction generator (IG) system for stand-alone power systems is controlled by means of one ac/dc plus one dc/ac converter and applying a recurrent wavelet neural network (RWNN) controller with improved particle swarm ...
Answers to SPARKS Magazine – May Issue 2015
... electrical circuits. After checking that isolation can be made it is essential that the supply cannot inadvertently be reinstated. A padlock or suitable locking device can be used for this purpose. Caution notices will also be required at the point(s) of isolation. In the event that more than one pe ...
... electrical circuits. After checking that isolation can be made it is essential that the supply cannot inadvertently be reinstated. A padlock or suitable locking device can be used for this purpose. Caution notices will also be required at the point(s) of isolation. In the event that more than one pe ...
Intrinsic Safety`s New Protection Level - SPS
... mixture is not likely occur in normal operation, and if it occurs it will exist only for a short time ...
... mixture is not likely occur in normal operation, and if it occurs it will exist only for a short time ...
MPPT with PFC
... overheating due to core loss and copper loss. The harmonic content reduces machine efficiency. As a reference, IEEE Std. 519-1992 says that overheating due to harmonics typically decrease efficiency from 5 % to 10 % when compared to a resistive load. It would be interesting that the converter respon ...
... overheating due to core loss and copper loss. The harmonic content reduces machine efficiency. As a reference, IEEE Std. 519-1992 says that overheating due to harmonics typically decrease efficiency from 5 % to 10 % when compared to a resistive load. It would be interesting that the converter respon ...
Soft-Switching Full-Bridge PWM DC–DC
... LC filter, and a novel type of secondary snubber. The main part of the converter is a high-frequency full-bridge inverter consisting of four fast IGBTs T1 − T4 and freewheeling diodes D1 − D4 . The high-frequency center-tapped step-down power transformer Tr with very low leakage inductance is used t ...
... LC filter, and a novel type of secondary snubber. The main part of the converter is a high-frequency full-bridge inverter consisting of four fast IGBTs T1 − T4 and freewheeling diodes D1 − D4 . The high-frequency center-tapped step-down power transformer Tr with very low leakage inductance is used t ...
ACS755xCB-130 - Allegro Microsystems
... Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the ...
... Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the ...
Class notes on controlled rectifiers
... Unlike the uncontrolled rectifiers, by replacing the diodes with thyristors, the average output voltage can be controlled by adjusting the turn-on time or the control angle, denoted by α, of the thyristors (Q1, Q2, Q3 and Q4): The turn-on instant of the thyristor is controlled by the gate signal ...
... Unlike the uncontrolled rectifiers, by replacing the diodes with thyristors, the average output voltage can be controlled by adjusting the turn-on time or the control angle, denoted by α, of the thyristors (Q1, Q2, Q3 and Q4): The turn-on instant of the thyristor is controlled by the gate signal ...
Energy Saving of Conservation Voltage Reduction Based on Load
... Controllable devices include switched capacitor banks, voltage regulators, load tab changers (LTC) and distributed energy resources (DER) [9,10]. The set points determined by the coordinated controller will, for instance, coordinate a capacitor bank’s operation with other controllable devices on the ...
... Controllable devices include switched capacitor banks, voltage regulators, load tab changers (LTC) and distributed energy resources (DER) [9,10]. The set points determined by the coordinated controller will, for instance, coordinate a capacitor bank’s operation with other controllable devices on the ...
AP3171 - Diodes Incorporated
... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
ZXCL SERIES Micropower SC70-5 & SOT23-5 low dropout regulators
... The Enable pin can be connected to VIN or driven from an independent source of up to 10V maximum. (e.g. CMOS logic) for normal operation. There is no clamp diode from the Enable pin to VIN, so the VIN pin may be at any voltage within its operating range irrespective of the voltage on the Enable pin. ...
... The Enable pin can be connected to VIN or driven from an independent source of up to 10V maximum. (e.g. CMOS logic) for normal operation. There is no clamp diode from the Enable pin to VIN, so the VIN pin may be at any voltage within its operating range irrespective of the voltage on the Enable pin. ...
A Framework for Reliability and Performance Assessment of Wind
... components and faults in the grid [16]. A similar approach can be found in [17], where the failure rate of WECS components is calculated based on their nominal failure rate and environmental stress factors, such as temperature. Reliability of WECS computed in this manner disregards any correlation b ...
... components and faults in the grid [16]. A similar approach can be found in [17], where the failure rate of WECS components is calculated based on their nominal failure rate and environmental stress factors, such as temperature. Reliability of WECS computed in this manner disregards any correlation b ...
ACS755xCB-100 - Allegro Microsystems
... Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the ...
... Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the ...
Importance of the Neutral Grounding Resistor
... (1) – Should read “Neutral grounding devices shall be permitted to be used only on systems where all neutral conductors are insulated to the nominal system voltage.” (3) Where line-to-neutral loads are served, provision shall be made to automatically de-energize the system on the occurrence of (a) a ...
... (1) – Should read “Neutral grounding devices shall be permitted to be used only on systems where all neutral conductors are insulated to the nominal system voltage.” (3) Where line-to-neutral loads are served, provision shall be made to automatically de-energize the system on the occurrence of (a) a ...
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.