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Equivalent series resistance information


Capacitors and inductors as used in electric circuits are not ideal components with only capacitance or inductance. However, they can be treated, to a very good degree of approximation, as being ideal capacitors and inductors in series with a resistance; this resistance is defined as the equivalent series resistance (ESR). If not otherwise specified, the ESR is always an AC resistance, which means it is measured at specified frequencies, 100 kHz for switched-mode power supply components, 120 Hz for linear power-supply components, and at its self-resonant frequency for general-application components. Additionally, audio components may report a "Q factor", incorporating ESR among other things, at 1000 Hz.

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Equivalent series resistance

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ideal capacitors and inductors in series with a resistance; this resistance is defined as the equivalent series resistance (ESR). If not otherwise specified...

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Internal resistance

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may be modeled as a voltage source in series with a resistance. These types of models are known as equivalent circuit models. Another common model being...

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Dissipation factor

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model includes a lossless ideal capacitor in series with a resistor termed the equivalent series resistance (ESR) as shown below. The ESR represents losses...

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ESR meter

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measuring instrument designed and used primarily to measure the equivalent series resistance (ESR) of real capacitors; usually without the need to disconnect...

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Dielectric loss

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capacitor includes a lossless ideal capacitor in series with a resistor termed the equivalent series resistance (ESR), as shown in the figure below. The ESR...

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LCR meter

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designs measure true inductance or capacitance, as well as the equivalent series resistance of capacitors and the Q factor of inductive components. Usually...

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Capacitor

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being in series with an equivalent series inductance ESL {\displaystyle {\text{ESL}}} and a frequency-dependent equivalent series resistance ESR {\displaystyle...

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List of electrical and electronic measuring equipment

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Measures the amount of energy dissipated ESR meter Measures the equivalent series resistance of capacitors Frequency counter Measures the frequency of the...

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Equivalent series inductance

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Equivalent series inductance (ESL) is an effective inductance that is used to describe the inductive part of the impedance of certain electrical components...

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Coilgun

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charge remaining on the capacitor. The electrical resistance of the coils and the equivalent series resistance (ESR) of the current source dissipate considerable...

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Output impedance

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Damping factor Voltage divider Early effect small-signal model Equivalent series resistance Power gain Tocci, Ronald J. (1975). "11". Fundamentals of Electronic...

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Capacitance meter

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may also measure a number of other parameters such as leakage, equivalent series resistance (ESR), and inductance. For most purposes and in most cases the...

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Supercapacitor

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lowered the equivalent series resistance (ESR) increasing charge/discharge currents. The first supercapacitor with low internal resistance was developed...

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Tantalum capacitor

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The equivalent series resistance (ESR) summarizes all resistive losses of the capacitor. These are the terminal resistances, the contact resistance of...

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Current source

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finite internal resistance is modeled by placing the value of that resistance across an ideal current source (the Norton equivalent circuit). However...

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Electrical impedance

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{Z_{1}Z_{2}}{Z_{1}+Z_{2}}}} The equivalent impedance Z eq {\displaystyle Z_{\text{eq}}} can be calculated in terms of the equivalent series resistance R eq {\displaystyle...

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Capacitor types

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parallel, thus reducing the internal ohmic losses (equivalent series resistance or ESR) and equivalent series inductance (ESL). The inherent geometry of film...

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Decoupling capacitor

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decoupling capacitors. Ceramic capacitor Equivalent series inductance Equivalent series resistance Film capacitor E-series of preferred numbers Don Lancaster...

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Applications of capacitors

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voltage motors for their low inductance and low cost. Low ESR (equivalent series resistance) electrolytes are often required to handle the high ripple current...

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Battery indicator

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but resistance increases, voltage across battery terminals is not a good indicator of capacity. A meter such as an equivalent series resistance meter...

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Thermal conductance and resistance

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thermal conductance. The SI unit of absolute thermal resistance is kelvins per watt (K/W) or the equivalent degrees Celsius per watt (°C/W) – the two are the...

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Ceramic capacitor

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the insulation resistance of the dielectric, not to be confused with the insulation of the housing RESR, the equivalent series resistance, which summarizes...

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Series and parallel circuits

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divider Equivalent impedance transforms Hydraulic analogy Network analysis (electrical circuits) Resistance distance Series-parallel duality Series-parallel...

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Polymer capacitor

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electrolytic capacitors are characterized by particularly low internal equivalent series resistances (ESR) and high ripple current ratings. Their electrical parameters...

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Inrush current limiter

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in line with the capacitor to excessive current. The initial equivalent series resistance (ESR) of the capacitor provides very little protection for the...

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Electrolytic capacitor

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The equivalent series resistance (ESR) summarizes all resistive losses of the capacitor. These are the terminal resistances, the contact resistance of...

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Film capacitor

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The equivalent series resistance (ESR) summarizes all resistive losses of the capacitor. These are the supply line resistances, the contact resistance of...

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Photoflash capacitor

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of a capacitor are capacitance, working voltage, equivalent series resistance (ESR), equivalent series inductance (ESL), and working temperature Compared...

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