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Analysis and design of an impulse current generator
Analysis and design of an impulse current generator

... one and only element (R, L, C) of the generator. When changing one element it is required to change at least one of the others in order to meet the requirements for damped oscillation, otherwise the current tends to the over-damped oscillation (R2>4L/C) or to the under-damped (R2<4L/C). In order to ...
Potentiometer - Make Your Point
Potentiometer - Make Your Point

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MAX1845 Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit General Description

... step-down (buck) topologies that provides high efficiency, excellent transient response, and high DC output accuracy necessary for stepping down high-voltage batteries to generate low-voltage chipset and RAM power supplies in notebook computers. The CS_ inputs can be used with low-side sense resisto ...
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... The MAX5038A/MAX5041A dual-phase, PWM controllers provide high-output-current capability in a compact package with a minimum number of external components. The MAX5038A/MAX5041A utilize a dual-phase, average-current-mode control that enables optimal use of low RDS(ON) MOSFETs, eliminating the need f ...
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TPS650240 数据资料 dataSheet 下载

- SlideBoom
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... A.C. armature windings are always of the nonsalient-pole type and are usually symmetrically distributed in slots around the complete circumference of the armature. A.C. armature windings are generally open-circuit type i.e., both ends are brought out. An open-circuit winding is one that does not clo ...
LM2596 SIMPLE SWITCHER(RM) Power Converter 150 kHz 3A
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... The LM2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an adj ...
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Paper Link - UIC - University of Illinois at Chicago

... charge, while the output capacitance of switch Q3 begins to discharge, as shown in Fig. 5(d). The charging current of Q2 and the discharging current of Q3 together add up to the primary currents ipri1 and ipri2 . The transformer primary currents make a transition from positive to negative. Once the ...
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capacitor switching transient modeling and analysis

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... Supply voltage dips are reductions of the voltage magnitude at a point in the electrical system below a specified threshold chosen for the purpose of detecting and followed by voltage recovery after a short period of time (dip duration), from half a cycle to a few seconds. The lowest rms value measu ...
table of contents
table of contents

... severely damaged. A coupling loop is useful for directing RF at a reduced level into the counter. A coil of wire, or even a straight piece of wire attached to the BNC connector may be sufficient for operation. The length and number of turns will vary with the power supplied by the transmitter. A wea ...
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TPS312x Series Supervisory Circuits in Ultra

... Figure 2 describes the characteristics of the supply voltage of a system. After the main voltage or the battery is turned on, the supply voltage rises. The internal resistance of the transformer and rectifier and any current-limiting elements in the voltage regulator determine the rate of this rise. ...
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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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