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Slide 1
Slide 1

... 220-mH inductor and a total of 30-Ω resistance, as shown. (a) What is the current at t = 0? (b) What is the time constant? (c) What is the maximum current? (d) How long will it take the current to reach half its maximum possible value? (e) At this instant, at what rate is energy being delivered by t ...
Instruction manual
Instruction manual

UCC28060 数据资料 dataSheet 下载
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... efficiency with low-cost components—to higher power ratings than previously possible. By utilizing a Natural Interleaving technique, both channels operate as masters (that is, there is no slave channel) synchronized to the same frequency. This approach delivers inherently strong matching, faster res ...
Solid State III, Lecture 23
Solid State III, Lecture 23

$doc.title

MICROCONTROLLER BASED POWER FACTOR CORRECTION A
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... associated with motors and transformers. An incandescent bulb would have a power factor of close to 1.0. A one hp motor has power factor about 0.80. With low power factor loads, the current flowing through electrical system components is higher than necessary to do the required work. These results i ...
Current, Resistance, DC Circuits, Kirchoff`s Rules
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... • Across resistances, write voltage drop DV = - iR if following assumed current direction. Otherwise, write voltage change = +iR. • When crossing EMFs from – to +, write DV = +E. Otherwise write DV= -E • Dot product i.E determines whether power is actually supplied or dissipated ...
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... Initially, the photo voltage generated by the photo-sensor was amplified by a precision instrumentation amplifier (INA122, Texas Instruments) for accurate, low noise differential signal acquisition. Its two op-amp design provides excellent performance with very low quiescent current, and is ideal fo ...
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... to stay in the “linear” range. The linear range is when Vout=A(V1-V2) vs. being in saturation. • Examples: cruise control, heating/cooling systems Positive Feedback • As information is fed back, the output destabilizes. The op-amp tends to saturate. • Examples: Guitar feedback, stock market crash • ...
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... normal steady state operation of the transformer or of the circuit. The FDD self-activates when a circuit breakers opens to de-energize the OCS. In the transient period following a switching activity, the FDD saturates at an instant before the voltage or distribution transformers in the circuit. The ...
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... Parallel circuits have several current paths. The total current is divided, with some of the moving charges travelling through each branch, or part of the circuit. You can think of a parallel circuit as a set of side branches connected side by side. So parallel circuits have more than one path for e ...
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High-efficiency, IEEE 802.3at compliant, integrated PoE

... Analog PWM supply ground. RTN for sensitive analog circuitry including the SMPS current limit amplifier. ...
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... be used. As the attack time becomes faster, this click becomes more difficult to avoid. Discussion abounds on the ideal shaping for this transfer function. Most common is an RC (exponential) charge with some diode action to “soften” the start of the limiting. The limiter must have enough control rat ...
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7 Segment Display Driver

... segment that is visible in figure1. These LED’s do not have any resistors connected to them to limit the current, thus we will need to implement our own. What size resistors should they be? It depends on the maximum current rating per segment which one can find in a data sheet as the example in Figu ...
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... interface. The device operates with a power supply ranging from 3.0 V to 3.6 V and can be powered down when not in use. ...
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Valve RF amplifier



A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.), is a device for electrically amplifying the power of an electrical radio frequency signal.Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of transmitters, transmitter output stages switching to transistors somewhat later. Specially constructed valves are still in use for very high power transmitters, although rarely in new designs.
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