Gas Insulated Switchgear
... There has been continuous demands for economic efficiency, compactness, high reliability, low operating cost & long operating life from GIS users. All these requirements are fulfilled by our switchgear type 550 SR for rated voltages up to 550 kV. The circuit breaker works on hydraulic mechanism with ...
... There has been continuous demands for economic efficiency, compactness, high reliability, low operating cost & long operating life from GIS users. All these requirements are fulfilled by our switchgear type 550 SR for rated voltages up to 550 kV. The circuit breaker works on hydraulic mechanism with ...
A 2-V 2-GHz BJT Variable Frequency Oscillator - Solid
... ARIABLE-frequency oscillators (VFO’s) phase locked to a low-frequency clean reference are commonly used as local oscillators in the radio-frequency wireless transceivers. The VFO’s are required to 1) exhibit low internal phase noise for easy optimization for the phase-locked loops; 2) consume little ...
... ARIABLE-frequency oscillators (VFO’s) phase locked to a low-frequency clean reference are commonly used as local oscillators in the radio-frequency wireless transceivers. The VFO’s are required to 1) exhibit low internal phase noise for easy optimization for the phase-locked loops; 2) consume little ...
2013S
... a) In what respect is the operation of an alternator on infinite bus bar different from parallel operation of two alternators? What is the effect of change in excitation on the operation of an alternator on infinite bus? b) A 2MVA, 3-phase, star connected, 8 pole, 750 rpm alternator is operating on ...
... a) In what respect is the operation of an alternator on infinite bus bar different from parallel operation of two alternators? What is the effect of change in excitation on the operation of an alternator on infinite bus? b) A 2MVA, 3-phase, star connected, 8 pole, 750 rpm alternator is operating on ...
safepower-evo-hf
... The presence of the external temperature sensor option will activate compensation of the voltage depending on the temperature with the battery backup voltage (272V for 20 battery blocks) b) Battery test: during normal operation the battery is automatically tested at regular intervals. The battery te ...
... The presence of the external temperature sensor option will activate compensation of the voltage depending on the temperature with the battery backup voltage (272V for 20 battery blocks) b) Battery test: during normal operation the battery is automatically tested at regular intervals. The battery te ...
Nexus 1500 Transient Recording Power Quality Revenue Meter Advanced Communication and I/O
... The unit offers an independent out of limit log. This allows a user to download out of limit information to obtain a sequence of events for any occurrence. Utilizing the 10 msec clock resolution, the logs can be combined with different metered points throughout a distribution system to provide an ac ...
... The unit offers an independent out of limit log. This allows a user to download out of limit information to obtain a sequence of events for any occurrence. Utilizing the 10 msec clock resolution, the logs can be combined with different metered points throughout a distribution system to provide an ac ...
Microgrid Stability Controller Based on Adaptive Robust Total
... systems under unbalanced condition are given [18-19]. References [20-22] propose different controllers for DG systems to compensate harmonic components. References [23-25] depict control schemes for parallel connected DGs and hierarchical control is discussed in references [26-27]. Nowadays these co ...
... systems under unbalanced condition are given [18-19]. References [20-22] propose different controllers for DG systems to compensate harmonic components. References [23-25] depict control schemes for parallel connected DGs and hierarchical control is discussed in references [26-27]. Nowadays these co ...
MAX14920/MAX14921 High-Accuracy 12-/16
... front-end devices accurately sample cell voltages and provide level shifting for primary/secondary battery packs up to 16 cells/+65V (max). The MAX14920 monitors up to 12 cells, while the MAX14921 monitors up to 16 cells. Both devices simultaneously sample all cell voltages, allowing accurate state- ...
... front-end devices accurately sample cell voltages and provide level shifting for primary/secondary battery packs up to 16 cells/+65V (max). The MAX14920 monitors up to 12 cells, while the MAX14921 monitors up to 16 cells. Both devices simultaneously sample all cell voltages, allowing accurate state- ...
1 Basic Digital Concepts
... states, or bits, in order to give a satisfactory reproduction. For example, it requires a minimum of 10 bits to determine a voltage at any given time to an accuracy of _ 0:1%. For transmission, one now requires 10 lines instead of the one original analog line. The explosion in digital techniques and ...
... states, or bits, in order to give a satisfactory reproduction. For example, it requires a minimum of 10 bits to determine a voltage at any given time to an accuracy of _ 0:1%. For transmission, one now requires 10 lines instead of the one original analog line. The explosion in digital techniques and ...
DIELECTRIC BARRIER DISCHARGES FOR EGG
... large inter-electrodes distance, so that the discharge is impossible to be obtained in air at atmospheric pressure. Therefore, a helium-oxygen mixture is used. Helium allows discharge appearance at atmospheric pressure, but it is chemically inactive. Oxygen generates bactericidal agents, but he decr ...
... large inter-electrodes distance, so that the discharge is impossible to be obtained in air at atmospheric pressure. Therefore, a helium-oxygen mixture is used. Helium allows discharge appearance at atmospheric pressure, but it is chemically inactive. Oxygen generates bactericidal agents, but he decr ...
EEAP 245_Due: February 2, 1998
... Figure 4. Functional diagram of oscilloscope The part of the oscilloscope that students typically find the most difficult to understand and adjust is the timing and synchronization. The display on an oscilloscope looks constant because the oscilloscope repetitively sweeps across the screen, drawing ...
... Figure 4. Functional diagram of oscilloscope The part of the oscilloscope that students typically find the most difficult to understand and adjust is the timing and synchronization. The display on an oscilloscope looks constant because the oscilloscope repetitively sweeps across the screen, drawing ...
Category 2 Parallel Operating - Generation and New Metering (Form
... Protection alternatives for the various acceptable transformer connections are shown. Only one protection alternative will ultimately be used, depending on the actual transformer winding connections. VT’s for 59, 27, 81o/u and 32 are shown connected on the primary (Project side) of the power transfo ...
... Protection alternatives for the various acceptable transformer connections are shown. Only one protection alternative will ultimately be used, depending on the actual transformer winding connections. VT’s for 59, 27, 81o/u and 32 are shown connected on the primary (Project side) of the power transfo ...
±80°/sec Yaw Rate Gyroscope with SPI ADIS16080 FEATURES
... the sensor with the signal conditioning electronics preserves signal integrity in noisy environments. The electrostatic resonator requires 14 V to 16 V for operation. Because only 5 V is typically available in most applications, a charge pump is included on-chip. After the demodulation stage, there ...
... the sensor with the signal conditioning electronics preserves signal integrity in noisy environments. The electrostatic resonator requires 14 V to 16 V for operation. Because only 5 V is typically available in most applications, a charge pump is included on-chip. After the demodulation stage, there ...
Checking The Output Of Your Laser Tube
... As you know, laser tubes can be commanded to output over a range of power values -- from 0% up to 100% of their rated power. (I.e., a 60 watt tube outputting at 50% power will be generating the same output power as a 30 watt tube outputting at 100% power -- 30 watts.) The output power level is contr ...
... As you know, laser tubes can be commanded to output over a range of power values -- from 0% up to 100% of their rated power. (I.e., a 60 watt tube outputting at 50% power will be generating the same output power as a 30 watt tube outputting at 100% power -- 30 watts.) The output power level is contr ...
슬라이드 1 - cbucc.com
... - Up to 24 breaks per phase are used for 750kV - The number of breaks is dictated by the limitation of testing station capacity rather than interrupting capacity possible per break - The tank is permanently charged with compressed gas and encloses two breaks ...
... - Up to 24 breaks per phase are used for 750kV - The number of breaks is dictated by the limitation of testing station capacity rather than interrupting capacity possible per break - The tank is permanently charged with compressed gas and encloses two breaks ...
Control principles of micro-source inverters used in microgrid
... (DG) has received increasing attentions [1, 2]. Microgrids [3–5], which comprise micro-sources, energy storage devices, loads, and control and protection system, are the most effective carrier of DGs. When a microgrid is connects to the utility grid, it behaves like a controlled load or generator, w ...
... (DG) has received increasing attentions [1, 2]. Microgrids [3–5], which comprise micro-sources, energy storage devices, loads, and control and protection system, are the most effective carrier of DGs. When a microgrid is connects to the utility grid, it behaves like a controlled load or generator, w ...
Modeling and design of a current mode control boost converter
... 1.1 Basic Operation of Boost Converter A Boost converter or step-up switch mode power supply that can also be called a switch mode regulator. It steps up the input voltage to produce a higher output voltage. The popularity of a switch mode regulator is due to its high efficiency, compact size and lo ...
... 1.1 Basic Operation of Boost Converter A Boost converter or step-up switch mode power supply that can also be called a switch mode regulator. It steps up the input voltage to produce a higher output voltage. The popularity of a switch mode regulator is due to its high efficiency, compact size and lo ...
`BUCK` STEP-DOWN DC-DC CONVERTER (Basic
... NOTE: Power is now assumed to be the average value and the subscript av is NOT used! ...
... NOTE: Power is now assumed to be the average value and the subscript av is NOT used! ...
MAX5950 12V PWM Controller with Hot-Swap General Description Features
... charge pump that provides the gate drive for an external n-channel MOSFET. A DCENO logic output indicates the completion of the inrush cycle. The MAX5950 PWM section utilizes a voltage-mode control scheme for good noise immunity and offers external compensation, allowing for maximum flexibility with ...
... charge pump that provides the gate drive for an external n-channel MOSFET. A DCENO logic output indicates the completion of the inrush cycle. The MAX5950 PWM section utilizes a voltage-mode control scheme for good noise immunity and offers external compensation, allowing for maximum flexibility with ...
FDML7610S PowerTrench Power Stage
... 1. Input ceramic bypass capacitors C1 and C2 must be placed close to the D1 and S2 pins of Power Stage to help reduce parasitic inductance and high frequency conduction loss induced by switching operation. C1 and C2 show the bypass capacitors placed close to the part between D1 and S2. Input capaci ...
... 1. Input ceramic bypass capacitors C1 and C2 must be placed close to the D1 and S2 pins of Power Stage to help reduce parasitic inductance and high frequency conduction loss induced by switching operation. C1 and C2 show the bypass capacitors placed close to the part between D1 and S2. Input capaci ...
![Section [26 35 33.15] [16283]](http://s1.studyres.com/store/data/009628232_1-9ac6d3a21b68a7f82b84c8ff6a9a67a4-300x300.png)
Section [26 35 33.15] [16283]
... 1. Manufacturer Qualifications: Manufacturer shall be a firm engaged in the manufacture of low voltage transient-free automatic capacitor banks of types and sizes required, and whose products have been in satisfactory use in similar service for a minimum of 20 years. 2. Installer Qualifications: Ins ...
... 1. Manufacturer Qualifications: Manufacturer shall be a firm engaged in the manufacture of low voltage transient-free automatic capacitor banks of types and sizes required, and whose products have been in satisfactory use in similar service for a minimum of 20 years. 2. Installer Qualifications: Ins ...
PDF: 1.20MB
... Maximum voltage can be biased between P-N. A voltage suppressing circuit such as a brake circuit is necessary if P-N voltage exceeds this value. Maximum P-N surge voltage in switching state. If P-N voltage exceeds this voltage, a snubber circuit is necessary to absorb the surge so that the surge vol ...
... Maximum voltage can be biased between P-N. A voltage suppressing circuit such as a brake circuit is necessary if P-N voltage exceeds this value. Maximum P-N surge voltage in switching state. If P-N voltage exceeds this voltage, a snubber circuit is necessary to absorb the surge so that the surge vol ...
Rectifier
A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification. Physically, rectifiers take a number of forms, including vacuum tube diodes, mercury-arc valves, copper and selenium oxide rectifiers, semiconductor diodes, silicon-controlled rectifiers and other silicon-based semiconductor switches. Historically, even synchronous electromechanical switches and motors have been used. Early radio receivers, called crystal radios, used a ""cat's whisker"" of fine wire pressing on a crystal of galena (lead sulfide) to serve as a point-contact rectifier or ""crystal detector"".Rectifiers have many uses, but are often found serving as components of DC power supplies and high-voltage direct current power transmission systems. Rectification may serve in roles other than to generate direct current for use as a source of power. As noted, detectors of radio signals serve as rectifiers. In gas heating systems flame rectification is used to detect presence of a flame.Because of the alternating nature of the input AC sine wave, the process of rectification alone produces a DC current that, though unidirectional, consists of pulses of current. Many applications of rectifiers, such as power supplies for radio, television and computer equipment, require a steady constant DC current (as would be produced by a battery). In these applications the output of the rectifier is smoothed by an electronic filter (usually a capacitor) to produce a steady current.More complex circuitry that performs the opposite function, converting DC to AC, is called an inverter.