< Practical Electronics
Alternating current or AC refers to current that has amplitude varies sinusoidally and can be expressed mathematically
- Vac = V Sin(ωt + θ)
The highest voltage is V . One cycle of Sin wave has one highest positive value at θ = π/2 and one highest negative value at θ = -π/2
- Vac = ±V at θ = ± π/2
The Peak to Peak Value
The value between ±V or in scalar equals to 2V
The Average Value
The Average Value is denoted as Va is defined as
- Va = 0.6 V
The Root Mean Square Value
The Root Mean Square Value is denoted as Vrms is defined as
- Vrms = 0.707 V
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