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Circuits
Circuits

... If you unscrew a bulb in a parallel circuit of several light bulbs, what happens to the remaining bulbs? The remaining bulbs stay equally bright ...
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ADP3408 - SP-Elektroniikka

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... between the leads of the photocoupler and capacitor is no more than 10 mm. (2) When designing the printed wiring board, ensure that the pattern of the IGBT collectors/emitters is not too close to the input block pattern of the photocoupler. If the pattern is too close to the input block and coupling ...
Application Note AN-3010 Using the QVE00033 Surface Mount Phototransistor Optical Interrupter Switch
Application Note AN-3010 Using the QVE00033 Surface Mount Phototransistor Optical Interrupter Switch

... schematic shows, the logic output is high or “1” when the path is blocked. This is because the blocked phototransistor is conducting very little current, and the 68K load resistor pulls the input of Fairchild TinyLogic™ buffer high. As the shield is pulled out of the interrupter’s throat, the 0.4 mm ...
MTP3N60E Designer`s™ Data Sheet TMOS E−FET.™ High Energy
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... The MAX17003/MAX17004 are dual step-down, switchmode, power-supply (SMPS) controllers with synchronous rectification, intended for main 5V/3.3V power generation in battery-powered systems. Fixed-frequency operation with optimal interleaving minimizes input ripple current from the lowest input voltag ...
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LT6555 - 650MHz Gain of 2 Triple 2:1 Video Multiplexer

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... If full duplex transmission is required, two fiber links are required. The unit can work with unsynchronized video sources; however, when working in transceiver mode it is highly recommended to synchronize the video sources thru genlock. This minimizes the disturbance in both the audio and the video ...
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Open FMB - Smart Grid Interoperability Panel

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... In a series circuit, adding a resistor increases the resistance for the entire circuit.  In a parallel circuit, adding a resistor provides another independent path for current to flow. As a result, more current flows for the same resistance. Because of this, when using Ohm’s law to calculate, you w ...
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ADG419 数据手册DataSheet下载

... Delay time between the 50% and 90% points of the digital inputs and the switch “ON” condition when switching from one address state to another. “OFF” time or “ON” time measured between the 90% points of both switches when switching from one address state to the other. Maximum input voltage for logic ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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