CO21579585
... currents. The application of a zig-zag transformer for the reduction of neutral current is advantageous due to passive compensation, Rugged, and less complex over the active compensation techniques. A zig-zag transformer is a special connection of three single-phase transformer windings or three-pha ...
... currents. The application of a zig-zag transformer for the reduction of neutral current is advantageous due to passive compensation, Rugged, and less complex over the active compensation techniques. A zig-zag transformer is a special connection of three single-phase transformer windings or three-pha ...
A wave lab inside a coaxial cable - Electricidade solar na Faculdade
... We shall start with a classic experimental situation that clearly shows the distributed or transmission line behaviour of a coaxial cable. This will happen if the time of propagation of an electrical pulse in the transmission line (/c) has at least the same order of magnitude as the pulse width. In ...
... We shall start with a classic experimental situation that clearly shows the distributed or transmission line behaviour of a coaxial cable. This will happen if the time of propagation of an electrical pulse in the transmission line (/c) has at least the same order of magnitude as the pulse width. In ...
D.J. Perreault, J. Hu, J.M. Rivas, Y. Han, O. Leitermann, R.C.N. Pilawa-Podgurski, A. Sagneri, and C.R. Sullivan, Opportunities and Challenges in Very High Frequency Power Conversion, 2009 IEEE Applied Power Electronics conference , Feb. 2009, pp. 1-14
... current, a minimum Q of 100 and a maximum temperature rise of 40◦ C), using toroids of P-type material (µ = 40) from Ferronics. The inductors designs are optimized based on a polynomial fit to the available core loss data [48] for P material and various toroidal core sizes [49]. Figure 3 illustrates ...
... current, a minimum Q of 100 and a maximum temperature rise of 40◦ C), using toroids of P-type material (µ = 40) from Ferronics. The inductors designs are optimized based on a polynomial fit to the available core loss data [48] for P material and various toroidal core sizes [49]. Figure 3 illustrates ...
A NOVEL MULTI CHANNEL DC-DC CONVERTER FOR HYBRID
... applications seems more useful. In [14], a nonisolated multiinput dc–dc converter which is derived from Hbridge structure has been proposed. In fact, by cascading two H-bridges with different dc-link voltages, different voltages due to addition or subtraction of H-bridges outputs are accessible. Mod ...
... applications seems more useful. In [14], a nonisolated multiinput dc–dc converter which is derived from Hbridge structure has been proposed. In fact, by cascading two H-bridges with different dc-link voltages, different voltages due to addition or subtraction of H-bridges outputs are accessible. Mod ...
Reference Manual
... Once transferred, programming files are stored in SRAM-based memory cells within the FPGA. These SRAM cells define the FPGA’s logic functions and circuit connections until they are erased, either by removing power or asserting the PROG_B input. FPGA configuration files transferred using the JTAG int ...
... Once transferred, programming files are stored in SRAM-based memory cells within the FPGA. These SRAM cells define the FPGA’s logic functions and circuit connections until they are erased, either by removing power or asserting the PROG_B input. FPGA configuration files transferred using the JTAG int ...
Model ZAC-40 - Fire Alarm Resources
... The ZAC-40 can also be used as a backup amplifier to serve as a backup for other ZAC-40 amplifiers in a 1 to 1 backup or 1 to many backup. The ZAC-40 also contains a local external audio input circuit (0 dB) and a dry contact input to switch on the amplifier and activate the two zones as configured ...
... The ZAC-40 can also be used as a backup amplifier to serve as a backup for other ZAC-40 amplifiers in a 1 to 1 backup or 1 to many backup. The ZAC-40 also contains a local external audio input circuit (0 dB) and a dry contact input to switch on the amplifier and activate the two zones as configured ...
PS1: Overcurrent Protection of a Substation Power Transformer
... using the computers available in the lab. Students can conduct the experiments at any time as long as the lab is available. Reports are due at the specified date. Preparation of the report: The report must include the following: A brief introduction to the hydrothermal coordination problem The M ...
... using the computers available in the lab. Students can conduct the experiments at any time as long as the lab is available. Reports are due at the specified date. Preparation of the report: The report must include the following: A brief introduction to the hydrothermal coordination problem The M ...
MAX5021/MAX5022 Current-Mode PWM Controllers for Isolated Power Supplies General Description
... can be used in power supplies capable of operating from a universal 85VAC to 265VAC line or the telecom voltage range of -36VDC to -72VDC. Power supplies designed with these devices use a high-value startup resistor, RS, (series combination of R1 and R2) that charges a reservoir capacitor, C2 (see F ...
... can be used in power supplies capable of operating from a universal 85VAC to 265VAC line or the telecom voltage range of -36VDC to -72VDC. Power supplies designed with these devices use a high-value startup resistor, RS, (series combination of R1 and R2) that charges a reservoir capacitor, C2 (see F ...
Metal Detector
... Please use the rated voltage for the power supply voltage. A rise of a temperature in the motor may occur when the variation width of the power supply voltage is large. Conveyor torque may deteriorate when the power supply voltage is low. Note: The shape (length, width, and height) of products to be ...
... Please use the rated voltage for the power supply voltage. A rise of a temperature in the motor may occur when the variation width of the power supply voltage is large. Conveyor torque may deteriorate when the power supply voltage is low. Note: The shape (length, width, and height) of products to be ...
Full-text
... Focus here is on an efficiency enhancement method for the quasi-impedance-source based (qZS-based) DC/DC converter. According to earlier papers [1-6], the qZS converter has many advantages over other DC/DC converters, such as voltage step-up property in a single stage, continuous input current, exce ...
... Focus here is on an efficiency enhancement method for the quasi-impedance-source based (qZS-based) DC/DC converter. According to earlier papers [1-6], the qZS converter has many advantages over other DC/DC converters, such as voltage step-up property in a single stage, continuous input current, exce ...
Comparison of cost and efficiency of DC versus AC in
... It has been known for a long time that direct current (DC) is potentially more convenient, in terms of efficiency, in the transmission of electrical energy than three-phase current and, a fortiori, singlephase current. Losses that occur in cables are potentially lower for DC than AC, because the cab ...
... It has been known for a long time that direct current (DC) is potentially more convenient, in terms of efficiency, in the transmission of electrical energy than three-phase current and, a fortiori, singlephase current. Losses that occur in cables are potentially lower for DC than AC, because the cab ...
A. POWER METERS-Advanced
... 62053-22 Class 0.5S for Real Energy and revenue meters. b) The Power Meter shall be accurate to 0.25% of reading + .025% of full scale for power and energy. Voltage and current shall be ...
... 62053-22 Class 0.5S for Real Energy and revenue meters. b) The Power Meter shall be accurate to 0.25% of reading + .025% of full scale for power and energy. Voltage and current shall be ...
A. POWER METERS-Advanced
... 62053-22 Class 0.5S for Real Energy and revenue meters. b) The Power Meter shall be accurate to 0.25% of reading + .025% of full scale for power and energy. Voltage and current shall be ...
... 62053-22 Class 0.5S for Real Energy and revenue meters. b) The Power Meter shall be accurate to 0.25% of reading + .025% of full scale for power and energy. Voltage and current shall be ...
MN800012EN
... Cap/Wrench It is keyed for one way in/ one way out when fully switching to ensure positive switch contact. ...
... Cap/Wrench It is keyed for one way in/ one way out when fully switching to ensure positive switch contact. ...
Analysis of Different Topologies For Active Power Factor Correction
... An ac to dc converter consisting of a line frequency diode bridge rectifier with a large output filter capacitor is cheap and robust, but demands a harmonic rich ac line current. As a result, the input power factor is poor - [1]. The most common power quality disturbance is instantaneous power inter ...
... An ac to dc converter consisting of a line frequency diode bridge rectifier with a large output filter capacitor is cheap and robust, but demands a harmonic rich ac line current. As a result, the input power factor is poor - [1]. The most common power quality disturbance is instantaneous power inter ...
AMD GES - SMPS Switching Power Supply Design
... The total combined wattage for the system configuration must be less than the output of the power supply used. Overall current usage limitation on the power supply should not exceed a combined system power output for the +5 V and +3.3 V outputs. Use Table 1 and Table 2 on page 4 to calculate the sys ...
... The total combined wattage for the system configuration must be less than the output of the power supply used. Overall current usage limitation on the power supply should not exceed a combined system power output for the +5 V and +3.3 V outputs. Use Table 1 and Table 2 on page 4 to calculate the sys ...
Static Voltage Stability Using FACTS Controllers
... limitations. However, the utility would like to achieve this with the most beneficial compensation device. Introducing the sources of reactive power, i.e., shunt capacitors and/or Flexible AC Transmission System (FACTS) controllers at the appropriate location is the most effective way for utilities ...
... limitations. However, the utility would like to achieve this with the most beneficial compensation device. Introducing the sources of reactive power, i.e., shunt capacitors and/or Flexible AC Transmission System (FACTS) controllers at the appropriate location is the most effective way for utilities ...
AlcAtel-lucent OmniSwitch 6900
... 10 Gigabit Ethernet (GbE) and 40 GbE platforms designed for the most demanding networks. These platforms offer unmatched versatility to actually deliver on the promise of the nextgeneration virtualized data center. With their modular approach, these platforms accommodate the exact rack configuration ...
... 10 Gigabit Ethernet (GbE) and 40 GbE platforms designed for the most demanding networks. These platforms offer unmatched versatility to actually deliver on the promise of the nextgeneration virtualized data center. With their modular approach, these platforms accommodate the exact rack configuration ...
Power over Ethernet
Power over Ethernet or PoE describes any of several standardized or ad-hoc systems which pass electrical power along with data on Ethernet cabling. This allows a single cable to provide both data connection and electrical power to devices such as wireless access points or IP cameras. Unlike standards such as Universal Serial Bus which also power devices over the data cables, PoE allows long cable lengths. Power may be carried on the same conductors as the data, or it may be carried on dedicated conductors in the same cable.There are several common techniques for transmitting power over Ethernet cabling. Two of them have been standardized by IEEE 802.3. Since only two of the four pairs are needed for 10BASE-T or 100BASE-TX, power may be transmitted on the unused conductors of a cable. In the IEEE standards, this is referred to as Alternative B. Power may also be transmitted on the data conductors by applying a common-mode voltage to each pair. Because twisted-pair Ethernet uses differential signalling, this does not interfere with data transmission. The common mode voltage is easily extracted using the center tap of the standard Ethernet pulse transformer. This is similar to the phantom power technique commonly used for powering audio microphones. In the IEEE standards, this is referred to as Alternative A.In addition to standardizing existing practice for spare-pair and common-mode data pair power transmission, the IEEE PoE standards provide for signalling between the power sourcing equipment (PSE) and powered device (PD). This signaling allows the presence of a conformant device to be detected by the power source, and allows the device and source to negotiate the amount of power required or available. Up to a 25.5 watts is available for a device.