DC Grids for Wind Farms
... DC/AC conversion and Vangen et. al. [22, 23] describes design equations and parameters that influence efficiency. A Dual Bridge Converter with soft switching features for applying a new modulation technique while eliminating the auxiliary circuits used in previous versions, is presented by Torrico-B ...
... DC/AC conversion and Vangen et. al. [22, 23] describes design equations and parameters that influence efficiency. A Dual Bridge Converter with soft switching features for applying a new modulation technique while eliminating the auxiliary circuits used in previous versions, is presented by Torrico-B ...
A Constant ON-Time 3-Level Buck Converter for Low Power
... Q2 and the source of Q3 and the drain of Q4. The methods considered to improve light load efficiency are: PFM (pulse frequency modulation) control scheme with DCM (discontinuous conduction mode) and use of Schottky diodes in lieu of the synchronous MOSFETs, Q3 and Q4. The 3-level buck converter oper ...
... Q2 and the source of Q3 and the drain of Q4. The methods considered to improve light load efficiency are: PFM (pulse frequency modulation) control scheme with DCM (discontinuous conduction mode) and use of Schottky diodes in lieu of the synchronous MOSFETs, Q3 and Q4. The 3-level buck converter oper ...
83-507-013 - TDK-Lambda Americas Inc.
... This TDK-Lambda Americas Inc. product is warranted against defects in materials and workmanship for a period of five years from date of shipment. During the warranty period, TDK-Lambda Americas Inc. will, at it’s option, either repair or replace products which prove to be defective. ...
... This TDK-Lambda Americas Inc. product is warranted against defects in materials and workmanship for a period of five years from date of shipment. During the warranty period, TDK-Lambda Americas Inc. will, at it’s option, either repair or replace products which prove to be defective. ...
Introduction to Technical Mathematics
... systems. They can be used with complete confidence in their performance. Fuses operate from increased fuse element temperature caused by an overcurrent flowing through them. Since the functioning of fuses does not depend on the operation of intricate moving mechanical parts, fuse performance charact ...
... systems. They can be used with complete confidence in their performance. Fuses operate from increased fuse element temperature caused by an overcurrent flowing through them. Since the functioning of fuses does not depend on the operation of intricate moving mechanical parts, fuse performance charact ...
Full-Text PDF
... energy applications [1–3]. Because of parasitic capacitance between the PV panels and ground, addressing leakage current and meeting safety requirements are major operating concerns [4,5]. Therefore, electrical isolation of residential PV systems is currently recommended [6–8]. Additionally, in orde ...
... energy applications [1–3]. Because of parasitic capacitance between the PV panels and ground, addressing leakage current and meeting safety requirements are major operating concerns [4,5]. Therefore, electrical isolation of residential PV systems is currently recommended [6–8]. Additionally, in orde ...
Molded Case Circuit Breaker.indd
... rating is the maximum continuous current a circuit breaker can carry without exceeding its rating. The main purpose of circuit breakers is to protect the conductor and equipment. As mentioned earlier, conductors are rated by how much current they can carry on a continuous basis, known as ampacity. A ...
... rating is the maximum continuous current a circuit breaker can carry without exceeding its rating. The main purpose of circuit breakers is to protect the conductor and equipment. As mentioned earlier, conductors are rated by how much current they can carry on a continuous basis, known as ampacity. A ...
Copper
... concentrates the damage on small areas where it may have more serious effects, this being described as “local cell action”. Such effects can occur when metals of differing electrochemical properties are placed in contact, giving a “galvanic couple”. (b) Stimulation of the anodic or cathodic reaction ...
... concentrates the damage on small areas where it may have more serious effects, this being described as “local cell action”. Such effects can occur when metals of differing electrochemical properties are placed in contact, giving a “galvanic couple”. (b) Stimulation of the anodic or cathodic reaction ...
Overcurrent Protection / 7SJ62
... The high-impedance measurement principle is an uncomplicated and sensitive method for detecting ground faults, especially on transformers. It can also be applied to motors, generators and reactors when these are operated on an grounded network. When the high-impedance measurement principle is applie ...
... The high-impedance measurement principle is an uncomplicated and sensitive method for detecting ground faults, especially on transformers. It can also be applied to motors, generators and reactors when these are operated on an grounded network. When the high-impedance measurement principle is applie ...
700 Series 20V BIPOLAR ARRAY DESIGN MANUAL
... in standard cell ICs a cell must be described fully only once and can be repeated with simple coordinates. However, one of the major disadvantages of full-custom ICs remains for the standard cell design. While the cells may be standardized, their placement and routing is not. Therefore, a full set ...
... in standard cell ICs a cell must be described fully only once and can be repeated with simple coordinates. However, one of the major disadvantages of full-custom ICs remains for the standard cell design. While the cells may be standardized, their placement and routing is not. Therefore, a full set ...
SIP 05167 Ideal 304 Welder Manual
... 5. Clear the dust at regular intervals with clean and dry compressed air; if the working condition is with heavy smoke and air pollution, the welding machine should be cleaned daily. 6. The compressed air should be reduced to the required pressure lest the little parts in the welding machine be dama ...
... 5. Clear the dust at regular intervals with clean and dry compressed air; if the working condition is with heavy smoke and air pollution, the welding machine should be cleaned daily. 6. The compressed air should be reduced to the required pressure lest the little parts in the welding machine be dama ...
- IEEE Mentor
... Pad-Mounted Transformers Ñ Used outside buildings where conventional unit substations might not be appropriate, and are either single-phase or three-phase units. Because they are of tamper-resistant construction, they do not require fencing. Primary and secondary connections are made in compartments ...
... Pad-Mounted Transformers Ñ Used outside buildings where conventional unit substations might not be appropriate, and are either single-phase or three-phase units. Because they are of tamper-resistant construction, they do not require fencing. Primary and secondary connections are made in compartments ...
A Better Antenna Balun
... is required.) The two lines that meet at the origin represent the upper and lower bounds of the region in which the voltage balun can maintain IMB ≤ 0.1. The voltage balun is effective for much larger load impedances than the current balun, but only when the load is well balanced (a perfectly balanc ...
... is required.) The two lines that meet at the origin represent the upper and lower bounds of the region in which the voltage balun can maintain IMB ≤ 0.1. The voltage balun is effective for much larger load impedances than the current balun, but only when the load is well balanced (a perfectly balanc ...
Power Equipment and Engineering Standards
... ordinances imposed by law. Detail engineering for Qwest sites shall meet all of the above references, as well as Qwest Standard Configuration Documents. The origin of this Technical Publication 77385 was in 1996. Prior to that point, power requirements for USWEST were contained in Module C of Techni ...
... ordinances imposed by law. Detail engineering for Qwest sites shall meet all of the above references, as well as Qwest Standard Configuration Documents. The origin of this Technical Publication 77385 was in 1996. Prior to that point, power requirements for USWEST were contained in Module C of Techni ...
Entron Welding Control Catalog
... manufacturing defect, ENTRON will repair or replace, at its discretion, the defective part without any cost for parts or labor. All silicon controlled rectifiers, SCR assemblies, IGBT assemblies, circuit breakers, Inverter controls carry a one year warranty from the date of original purchase, and el ...
... manufacturing defect, ENTRON will repair or replace, at its discretion, the defective part without any cost for parts or labor. All silicon controlled rectifiers, SCR assemblies, IGBT assemblies, circuit breakers, Inverter controls carry a one year warranty from the date of original purchase, and el ...
Article - Power Electronics and Drives
... The FC converter uses many auxiliary capacitors, and thus the voltage balancing of the converter is especially important in this topology. The flying capacitors determine the potential level necessary for the reduction of voltage stress on the switches and for modulation. The flying-capacitor voltag ...
... The FC converter uses many auxiliary capacitors, and thus the voltage balancing of the converter is especially important in this topology. The flying capacitors determine the potential level necessary for the reduction of voltage stress on the switches and for modulation. The flying-capacitor voltag ...
1. General Requirements
... ordinances imposed by law. Detail engineering for Qwest sites shall meet all of the above references, as well as Qwest Standard Configuration Documents. The origin of this Technical Publication 77385 was in 1996. Prior to that point, power requirements for USWEST were contained in Module C of Techni ...
... ordinances imposed by law. Detail engineering for Qwest sites shall meet all of the above references, as well as Qwest Standard Configuration Documents. The origin of this Technical Publication 77385 was in 1996. Prior to that point, power requirements for USWEST were contained in Module C of Techni ...
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.