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MX134 A/V Control Center MC206 6-Channel Power
MX134 A/V Control Center MC206 6-Channel Power

... OPTIONAL INTERNAL TUNER. The MX134 has provisions for adding the McIntosh TM1 AM/FM Tuner Module. The module is a dealer-installed option. AUTOMATIC INPUT LEVEL CONTROL. The analog input to the DSP features a circuit similar to the Power Guard® used in McIntosh amplifiers. AILC continuously monitors ...
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... The reverse happens when in the dark. R1 increases to maximum, potential difference across LDR increases, and Ib increases. The transistor amplifies the increase resulting in large Ic, thus activating relay and lamp L is switched on. ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... easily achieve high step-up voltage gain [1] . However, the power transformer volume is a problem for the development of a compact converter. The energy of the transformer leakage inductance can produce high voltage stress, increases the switching losses and the electromagnetic interference (EMI) pr ...
RA13H4452M 数据资料DataSheet下载
RA13H4452M 数据资料DataSheet下载

... The channel temperatures of each stage transistor Tch = Tcase + (VDD x IDD - Pout + Pin) x Rth(ch-case) are: Tch1 = Tcase + (12.5V x 0.18A – 1.5W + 0.05W) x 20.0°C/W = Tcase + 16.0 °C Tch2 = Tcase + (12.5V x 2.39A - 13.0W + 1.5W) x 2.4°C/W = Tcase + 44.1 °C For long-term reliability, it is best to k ...
tps72501.pdf
tps72501.pdf

... The amount of heat that an LDO linear regulator generates is directly proportional to the amount of power it dissipates during operation. All integrated circuits have a maximum allowable junction temperature (TJmax) above which normal operation is not assured. A system designer must design the opera ...
Current Conveyor with Very Low Output Impedance Voltage Buffer
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NCL30000 - Power Factor Corrected Dimmable LED Driver

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Delphi DNT04, Non-Isolated Point of Load

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LM3080 Operational Transconductance Amplifier (Rev. A)

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Control of High Speed Permanent Magnet Synchronous Motors

...  V/Hz drives typically add a low frequency voltage boost to increase starting torque capability  V/Hz drives typically add a steady state slip compensation which increases with frequency based on current measurement to give better steady state speed regulation  V/Hz drives may also add stability ...
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... The kilowatt-hours (kWh) to a customer is measured with a kWh meter corresponding to the average power consumed over a period of time. The cost/rate of the kWh may very depending on when the power is used (high vs. low demand) and how much total power has been consumed (cost may go down after so man ...
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Ferroresonance in Three-Phase Power Distribution Transformers
Ferroresonance in Three-Phase Power Distribution Transformers

... these transformers coincided with an increasing frequency of ferroresonant situations. Consequently, the core loss is the best indicator of how long the cable length should be to guarantee the absence of ferroresonance in a transformer single-phase switching [3]. Furthermore, the voltage rating of t ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) ISSN: 2278-1676
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) ISSN: 2278-1676

... The basic function of the shunt converter is to supply or absorb the active power demanded by the series converter. The shunt converter controls the voltage of the DC capacitor by absorbing or generating active power from the bus, therefore it acts as a synchronous source in parallel with the system ...
EMF and Internal Resistance
EMF and Internal Resistance

... All sources have an EMF. EMF is the open terminal voltage of the battery. All sources have a certain amount of internal resistance. Perfect batteries have 0 internal resistance. A car battery has very low internal resistance so is almost perfect ...
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Interleaved Power Factor Correction
Interleaved Power Factor Correction

... the rectifier which provides DC voltage to the PFC converter stage, then we have the PFC converter itself which provides the control over the current shape and phase lag while regulating the output voltage. Finally we have the controller block. The PFC converter can be implemented using different ci ...
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Series Active Filters

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icl8038,precision waveform generator.pdf

single-phase static active electricity meters ed 110
single-phase static active electricity meters ed 110

... the SO interface that complies with IEC 61393 / DIN 43864. The circuit is galvanically separated by the opto-electronic component. A transistor with an open collector is connected to the output of this. It transmits impulses with the corresponding frequency to the consumed energy. The number of impu ...
Zener Diode Voltage Regulators
Zener Diode Voltage Regulators

... There is no specific value for IZmin although it is typically taken to be ten percent of IZmax. It is possible that a lower value could be used particularly at Zener voltages greater than around six. This insures that the diode operating current is in the breakdown region and not in the soft transit ...
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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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