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MAX1907A/MAX1981A Quick-PWM Master Controllers for Voltage- Positioned CPU Core Power Supplies (IMVP-IV)
MAX1907A/MAX1981A Quick-PWM Master Controllers for Voltage- Positioned CPU Core Power Supplies (IMVP-IV)

... operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. The MAX1907A/ MAX1981A include active voltage positioning with adjustable gain and offset, reducing power dissipation and bulk output capacitance requirements. The ...
Basic Properties Terminology Theory
Basic Properties Terminology Theory

... conduction at higher voltages. Since electrical conduction occurs, in effect, between zinc oxide grains distributed throughout the bulk of the device, the Littelfuse Varistor is inherently more rugged than its single PN junction counterparts, such as zener diodes. In the varistor, energy is absorbed ...
MAX17009 AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller General Description
MAX17009 AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller General Description

... fixed-frequency controller for AMD’s® serial VID interface (SVI) CPU core supplies. Power-on detection of the CPU configures the MAX17009 as two independent single-phase regulators for a dual CPU core application, or one high-current, dual-phase, combined-output regulator for a unified core applicat ...
BDTIC www.BDTIC.com/infineon ICB2FL01G
BDTIC www.BDTIC.com/infineon ICB2FL01G

the origin of transient overvoltages
the origin of transient overvoltages

... possible voltage of three times the system voltage. While this high frequency oscillation takes place, the switch may clear at a high-frequency current zero, only to restrike again later with an even greater difference of voltage and escalating to an even higher overshoot. The outcome will be either ...
DC power supply Operating for Rotor Winding Resistance
DC power supply Operating for Rotor Winding Resistance

... compensating armature reaction and armature reactance) proportional to the load voltage of Main stator is transferred to the Rectifier Transformer(T6) via Current transformers(T1.T2.T3). - 직권 특성 2.3.3. The exciter currents transferred to the rectifier transformer via Reactor and current transformer ...
`antenna`? - SNS Courseware
`antenna`? - SNS Courseware

...  An antenna is a device that is made to efficiently ...
MAX1968/MAX1969 Power Drivers for Peltier TEC Modules General Description Features
MAX1968/MAX1969 Power Drivers for Peltier TEC Modules General Description Features

Advanced Syllabus
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BDTIC www.BDTIC.com/infineon ICB2FL02G
BDTIC www.BDTIC.com/infineon ICB2FL02G

... operation. A threshold of -50mV senses the current before the high-side MOSFET is turned on. A voltage level below of this threshold indicates a faulty operation (Capload 2). Finally a second threshold at 2.0 V senses even short overcurrent during turn-on of the high-side MOSFET such as they are typ ...
Interruption of small inductive currents in A.C. circuits
Interruption of small inductive currents in A.C. circuits

... transformers) the restriking voltage can rise rapidly to high values as a result of "current-chopping". Current-chopping is the sudden collapse of the current prior to its natura! zero value. The electromagnetic power which is built up in the self-inductances of the circuit at the moment of current- ...
A study of Direct Current Corona Discharges in Gases and Liquids
A study of Direct Current Corona Discharges in Gases and Liquids

... Figure 3.2: Semi-log plot of V-I characteristics for a negative (case 2) and a positive corona (case 3) discharges in air. The electrode spacing is 5.0 mm for both discharges. 12 Figure 3.3: Positive corona (case 3) in air for a pin to plate configuration. The cathode plate is indicated by a white l ...
Autolite Generator Maintenance
Autolite Generator Maintenance

... In handling electrical measuring instruments it should be 'remembered that they are extremely sensitive and delicately balanced. They should not, therefore, be subjected to sudden shocks nor should they be subjected to excessive vibration. A sland such os illustrated in Figure 1 is. comparatively ea ...
Introduction to Technical Mathematics
Introduction to Technical Mathematics

RHDB-3 Actives PDF
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STUDY OF UPQC FOR POWER QUALITY IMPROVEMENT MIHIR
STUDY OF UPQC FOR POWER QUALITY IMPROVEMENT MIHIR

... Mehmet Ucar et al. [22] proposed instantaneous reactive power theory, also known as p–q theory based on which a new control algorithm is proposed for 3-phase 4-wire and 4-leg shunt active power filter (APF) to suppress harmonic currents, compensate reactive power and neutral line current and balanc ...
LME49720 数据资料 dataSheet 下载
LME49720 数据资料 dataSheet 下载

... The LME49720 is part of the ultra-low distortion, low noise, high slew rate operational amplifier series optimized and fully specified for high performance, high fidelity applications. Combining advanced leading-edge process technology with state-of-the-art circuit design, the LME49720 audio operati ...
Stepper Motor Controller DSM5-70-00X
Stepper Motor Controller DSM5-70-00X

... The DSM controller is designed to drive a 2-phase hybrid stepper motor from the Bautz product range. This can be either a standard hybrid stepper motor, or a high-performance hybrid stepper that uses the patented Sigmax principle. Most of the 2-phase stepper motors from other manufacturers will also ...
The New PL and New PL-P Series of manual and bus
The New PL and New PL-P Series of manual and bus

ECE2120 Prelabs
ECE2120 Prelabs

... while power is off. • Before making changes in a circuit, turn off or disconnect the power first, if possible. • Never work alone where the potential of electric shock exists. • When changing an energized connection, use only one hand. Never touch two points in the circuit that are at different pote ...
CD74HCT7046A 数据资料 dataSheet 下载
CD74HCT7046A 数据资料 dataSheet 下载

Dielectric Fluids Containing PCBs
Dielectric Fluids Containing PCBs

... fluids contain polychlorinated biphenyls (PCBs). When PCBs were found to pose a significant risk to human health and the environment, they became a toxic substance under the jurisdiction of the U.S. Environmental Protection Agency (EPA). PCBs are now being phased. Remaining askarel insulated transfo ...
lecture1425873259
lecture1425873259

具有Eco Mode (tm) 的高效30A 同步降压转换器(Rev. B)
具有Eco Mode (tm) 的高效30A 同步降压转换器(Rev. B)

... JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. ...
design and simulation of a single-phase inverter with - Academica-e
design and simulation of a single-phase inverter with - Academica-e

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Spark-gap transmitter



A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""
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