输入 2 数值 以获取其他数值并按下 计算 按钮:
电压 (V) calculation from 电流 (I) and 电阻 (R):
V(V) = I(A) × R(Ω)
Complex power (S) calculation from 电压 (V) and 电流 (I):
P(W) = V(V) × I(A) = V 2(V) / R(Ω) = I 2(A) × R(Ω)
输入 2个幅值 + 2个相位角 以获取其他数值并按下 计算 按钮:
The 电压 V in 伏特 (V) is equal to the 电流 I in 安培 (A) times the impedance Z in 欧姆 (Ω):
V(V) = I(A) × Z(Ω) = (|I|×|Z|)θI + θZ)
The complex power S in volt-amps (VA) is equal to the 电压 V in 伏特 (V) times the 电流 I in 安培 (A):
S(VA) = V(V) × I(A) = (|V|×|I|)θV - θI)
The real power P in 瓦特 (W) is equal to the 电压 V in 伏特 (V) times 电流 I in 安培 (A) times the power factor (cos φ):
P(W) = V(V) × I(A) × cos φ
The reactive power Q in volt-amps reactive (VAR) is equal to the 电压 V in 伏特 (V) times the 电流 I in 安培 (A) time the sine of the complex power phase angle (φ):
Q(VAR) = V(V) × I(A) × sin φ
功率因数(FP)等于复功率相角余弦值的绝对值(φ):
PF = |cos φ|
输入 2 数值 以获取其他数值并按下 计算按钮:
平均功率 P in 瓦特 (W) is equal to the energy consumed E 以焦耳(J)为单位除以时间周期Δt in seconds (s):
P(W) = E(J) / Δt(s)