“Q factor(symbol: Q)”的概念、定义、翻译、参考文献-科学参考

Q factor(symbol: Q)

Electronics and Electrical Engineering

A factor that is associated with a resonant circuit and describes both the ability of the circuit to produce a large output at the resonant frequency and the selectivity of the circuit. The Q factor is defined as
$\frac{2 π \times energy stored}{energy dissipated per cycle}$
or alternatively as
$\frac{energy stored}{energy dissipated per radian}$
In the case of a simple series resonant circuit at the resonant frequency,
$ω_{0} L = \frac{1}{ω_{0} C}$
and the Q factor is given by
$Q = \frac{ω_{0} L}{R} or Q = \frac{1}{ω_{0} C R}$
where ω₀ is 2π times the resonant frequency f₀ and L, C, and R are respectively the inductance, capacitance, and resistance of the circuit.
The selectivity of a resonant circuit can be written as
$Q = \frac{f_{0}}{BW}$
where BW is the difference in frequency between the two 3 dB points.
A single reactive component may be capable of resonance without any other components, i.e. if the self-capacitance of an inductance coil or the self-inductance of a capacitor is sufficiently large. The Q factor of a single component is defined as the ratio of the reactance to the effective series resistance of the component, hence for an inductance
$Q = \frac{ω_{0} L}{R}$
and for a capacitor
$Q = \frac{1}{ω_{0} C R}$

单词	Q factor(symbol: Q)
释义	Q factor(symbol: Q) Electronics and Electrical Engineering A factor that is associated with a resonant circuit and describes both the ability of the circuit to produce a large output at the resonant frequency and the selectivity of the circuit. The Q factor is defined as $\frac{2 π \times energy stored}{energy dissipated per cycle}$ or alternatively as $\frac{energy stored}{energy dissipated per radian}$ In the case of a simple series resonant circuit at the resonant frequency, $ω_{0} L = \frac{1}{ω_{0} C}$ and the Q factor is given by $Q = \frac{ω_{0} L}{R} or Q = \frac{1}{ω_{0} C R}$ where ω₀ is 2π times the resonant frequency f₀ and L, C, and R are respectively the inductance, capacitance, and resistance of the circuit. The selectivity of a resonant circuit can be written as $Q = \frac{f_{0}}{BW}$ where BW is the difference in frequency between the two 3 dB points. A single reactive component may be capable of resonance without any other components, i.e. if the self-capacitance of an inductance coil or the self-inductance of a capacitor is sufficiently large. The Q factor of a single component is defined as the ratio of the reactance to the effective series resistance of the component, hence for an inductance $Q = \frac{ω_{0} L}{R}$ and for a capacitor $Q = \frac{1}{ω_{0} C R}$
随便看	metageography metagovernance metahistory metal metalanguage metal aromaticity metal-ceramic metaldehyde metal factor metal fatigue metal film resistor metalimnion metallic metallic bond metallic crystal metallic hydrogen metalline metallization metallized dye metallized film capacitors metallized paper capacitors metallizing metallocarbohedryne metallocene metallogenesis