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The TESLA coil - Tesla Coil Design, Construction and Operation Guide
The TESLA coil - Tesla Coil Design, Construction and Operation Guide

... combinations of components, one can calculate the phase difference between current and voltage by vectoradding the impedances (for example, in an RC circuit, the phase difference will be less than π/2). Finally, it is good to keep in mind that any real-life component has a non-zero resistance and re ...
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... If the analogue signal is a 1kHz sine wave, as above, then the frequency spectrum of the staircase equivalent will also display a peak at 1kHz. But it additionally has peaks at every multiple of the sample rate plus or minus 1kHz (ie 47 and 49kHz, 95 and 97kHz, 143 and 145kHz, etc). In order for the ...
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Tech Notes - Variable capacitors

... same shaft. The fourth one above has a five to one reduction drive connected between the capacitor and the tuning knob to make tuning easier. Simple radio receivers will have a “dial drum” connected to a small diameter shaft to achieve the same aim. The most common form of mechanically controlled va ...
Keysight Technologies, Inc E5052B Signal Source Analyzer
Keysight Technologies, Inc E5052B Signal Source Analyzer

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elg7186_15power - School of Electrical Engineering and

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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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