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NPN Bipolar Transistor for High-Current Switching Applications
NPN Bipolar Transistor for High-Current Switching Applications

... IC=10µA, IE=0A IC=100µA, RBE=0Ω ...
Capacitor Self-Resonance
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... Slowly increase the frequency until the amplitude drops to 2.83 divisions peak (here, 283 mVp). In the figure above, the sinusoid with eight cycles displayed has an amplitude of 5.66 divisions p-p, which is also 2.83 divisions peak. Once we have determined, using this method, that we are at the brea ...
Power Factor Correction Circuits: Active Filters
Power Factor Correction Circuits: Active Filters

... complexity and cost savings.These ICs are available from many of the analog ICsuppliers and greatly simplify the process of achieving areliable high-performance circuit. In order for theconverter to achieve power factor correction over theentire range of input line voltages, the converter (in thePFC ...
Student 2
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... From my results I noticed that: Voltage being received by the resisters in the circuits was the same as the total voltage supplied. This is typical of parallel circuits even though current increases across the parallel branches. The energy carried by the electrons is the same. Current, unlike voltag ...
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Current goals: Design low-power (100nA) ADC and DAC to have 3
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High-Voltage goes Vacuum
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Circuits - University of Colorado Boulder
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Three phase fully controlled converters are very popular in many
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... The T2600 Dual-Current Relay combines two current relays. The function of the unit is to start or stop the standby diesel generator according to the load situation. Current is measured as a single phase measurement in each of the generators. Both relays will respond to the highest of the currents, i ...
FSL126MR Green Mode Fairchild Power Switch (FPS™) Features
FSL126MR Green Mode Fairchild Power Switch (FPS™) Features

... transistor becomes almost zero. Then, VFB climbs up in a similar manner to the overload situation, forcing the preset maximum current to be supplied to the SMPS until the overload protection is activated. Because excess energy is provided to the output, the output voltage may exceed the rated voltag ...
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APPLICATION NOTE U-102 UC1637/2637/3637 SWITCHED MODE
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Ohm`s Law

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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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