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Sinusoidal Steady
Sinusoidal Steady

... 1. First, write the differential equation that relates the desired output to the input 2. Ignore all initial conditions (this includes switches, etc.). All initial energies (initial conditions) are assumed to have dissipated in the resistive part of the circuit. 3. Assume that the response (in this ...
A Single-phase-to-three-phase Power Converter with an Active
A Single-phase-to-three-phase Power Converter with an Active

IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

... converters are generally used as on-chip power supplies in high performance integrated circuits. Conventional DC–DC converters can be grouped into three primary categories: switching, switched capacitor (SC), and linear DC–DC converters . Buck converters, which are step-down switching DC–DC converte ...
MAX17067 Low-Noise Step-Up DC-DC Converter General Description Features
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... High switching frequency (640kHz or 1.2MHz selectable) allows for easy filtering and faster loop performance. An external compensation pin provides the user flexibility in determining loop dynamics, allowing the use of small, low equivalent-series-resistance (ESR) ceramic output capacitors. The devi ...
A Single-phase Four-Switch Rectifier with Significantly Reduced
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... possible, while maintaining low voltage ripples. In general, the reduction of electrolytic capacitors can be achieved in four approaches. One approach is to inject harmonic currents to suppress fluctuations of input energy by changing control strategies for existing power switches in rectifiers. In ...
Application Note AN4129 Green Current Mode PWM Controller FAN7601 1. Introduction www.fairchildsemi.com
Application Note AN4129 Green Current Mode PWM Controller FAN7601 1. Introduction www.fairchildsemi.com

... Figure 3 shows a typical start-up sequence for the FAN7601. The Vcc voltage should be higher than the minimum operating voltage at start-up to enter a steady state. If the Vcc voltage is higher than 19V, the over voltage protection function works. There is some delay in the over voltage protection c ...
MAX3385E ±15kV ESD-Protected, 3.0V to 5.5V, Low-Power, ________________General Description
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... The MAX3385E is a 3V-powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8 ...
AND8461/D Design of a 65 W Adapter Utilizing the NCP1237 PWM Controller
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... When focusing on the light load efficiency of adapter design, the key losses need to be identified. Switching losses play a major role in determining the light load efficiency, and are directly linked to the control methodology. These losses are caused by the energy stored in the sum of all capacita ...
MAX16909 36V, 220kHz to 1MHz Step-Down Converter with Low Operating Current General Description
MAX16909 36V, 220kHz to 1MHz Step-Down Converter with Low Operating Current General Description

... automotive buck converter with an integrated high-side switch. The device operates with input voltages from 3.5V to 36V and tolerates input transients from 3.5V up to 42V. During undervoltage events, such as cold-crank conditions, the internal pass device maintains 98% duty cycle. The switching freq ...
MAX2312/MAX2316 EV Kit Full Data Sheet
MAX2312/MAX2316 EV Kit Full Data Sheet

... also provides buffering and EMI filtering. The recommended operating supply voltage range is +2.7V to +3.6V. For operation of the MAX2312/MAX2316 above +3.6V, jumper JU1 may be removed and an external supply voltage of +3.6V may be applied between VCC (pin 2) and GND (pin 1) (Figure 1). ...
T.C. Neugebauer and D.J. Perreault, “Parasitic Capacitance Cancellation in Filter Inductors,” 2004 IEEE Power Electronics Specialists Conference, Aachen, Germany, June 2004, pp. 3102-3107.
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... quiet port, the capacitive current into the noisy port increases somewhat as compared to the uncancelled case. The additional current is the same as that of a small capacitor bypassing the noisy port. In many applications this is quite acceptable, and it becomes advantageous in filter applications w ...
AN052
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... applications for these low-cost circuits increases, so does the number of specific questions about their operation. The products covered are Intersil’s full line of single-chip 31/2 digit A/D converters. They are: • ICL7106, ICL7116 for Liquid Crystal Displays (LCD) • ICL7107, ICL7117 for Light Emit ...
NE555 (KA555) Single Timer
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AN2132
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... The goal of this design is to implement a low-cost linear ballast with good PFC, acceptable THD and low current-crest factor. The ballast will use Passive Valley Fill configuration to reduce costs compared to standard PFC. To overcome the disadvantage of the very high current crest factor, additiona ...
EEE 120-3741
EEE 120-3741

... control the voltage levels. The output voltage of the basic diode-clamped multilevel inverter has three levels.. The control for balancing these two dc capacitors is very important Fig. 2 (b) shows the circuit con-figuration of a basic flying capacitor multilevel inverter. As can be seen, it is conf ...
ADM560 数据手册DataSheet 下载
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IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)

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... Rated reactive power, Rated voltage RMS, Number of phase, Rated frequency, BIL (if applicable). For capacitors having bushings with two different BIL ratings, the nameplate shall show both BIL ratings, e.g. 150/95 kV BIL. J) Flammability classification and volume of insulating fluid. K) Statement th ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

MAX1910/MAX1912 1.5x/2x High-Efficiency White LED Charge
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... threshold of perception of the finger tip. Worst case values are 15 kV or more delivering 30 A. This threat is described in IEC 1000-4-2. The aspect of this threat which makes it so devastating is its fast rise time, in the subnanosecond range, with values reported as low as 100 picoseconds. Contact ...
MAX3222/MAX3232/MAX3241* 3.0V to 5.5V, 300µA Supply Current
MAX3222/MAX3232/MAX3241* 3.0V to 5.5V, 300µA Supply Current

... power consumption and extends battery life in portable systems. Its receivers remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1µA supply current. The MAX3222 is pin, package, and functionally compatible with the industry-standard MAX242, and the MA ...
Optimized Pulse Patterns for the 5-Level ANPC
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... The topology under consideration is the 5-level active neutral-point-clamped converter in Fig. 1, which has been introduced in [1]. This new topology only needs one floating capacitor to produce the five different output voltage levels. The redundant switching states are used to balance the capacito ...
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Capacitor



A capacitor (originally known as a condenser) is a passive two-terminal electrical component used to store electrical energy temporarily in an electric field. The forms of practical capacitors vary widely, but all contain at least two electrical conductors (plates) separated by a dielectric (i.e. an insulator that can store energy by becoming polarized). The conductors can be thin films, foils or sintered beads of metal or conductive electrolyte, etc. The nonconducting dielectric acts to increase the capacitor's charge capacity. A dielectric can be glass, ceramic, plastic film, air, vacuum, paper, mica, oxide layer etc. Capacitors are widely used as parts of electrical circuits in many common electrical devices. Unlike a resistor, an ideal capacitor does not dissipate energy. Instead, a capacitor stores energy in the form of an electrostatic field between its plates.When there is a potential difference across the conductors (e.g., when a capacitor is attached across a battery), an electric field develops across the dielectric, causing positive charge +Q to collect on one plate and negative charge −Q to collect on the other plate. If a battery has been attached to a capacitor for a sufficient amount of time, no current can flow through the capacitor. However, if a time-varying voltage is applied across the leads of the capacitor, a displacement current can flow.An ideal capacitor is characterized by a single constant value, its capacitance. Capacitance is defined as the ratio of the electric charge Q on each conductor to the potential difference V between them. The SI unit of capacitance is the farad (F), which is equal to one coulomb per volt (1 C/V). Typical capacitance values range from about 1 pF (10−12 F) to about 1 mF (10−3 F).The larger the surface area of the ""plates"" (conductors) and the narrower the gap between them, the greater the capacitance is. In practice, the dielectric between the plates passes a small amount of leakage current and also has an electric field strength limit, known as the breakdown voltage. The conductors and leads introduce an undesired inductance and resistance.Capacitors are widely used in electronic circuits for blocking direct current while allowing alternating current to pass. In analog filter networks, they smooth the output of power supplies. In resonant circuits they tune radios to particular frequencies. In electric power transmission systems, they stabilize voltage and power flow.
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