- #1
priscared
- 11
- 0
This is obviously an electronics question.
In communication systems, to calculate the power of a sine wave, the formula below is used
Power (Sine Wave) = 1/2 * (peak amplitude)^2
This formula is apparently a standard electronics formula.
I'm trying to understand where it comes from. How is it possible to get a power figure from a voltage only? There is no information on period, current, or resistance. Can some one please help explain the logic behind this formula for me?
Maybe its a simple trick, to me they've probably simply integrated the sign wave, but the limits must cancel out... i Don't know... help please..
Cheers
(
In communication systems, to calculate the power of a sine wave, the formula below is used
Power (Sine Wave) = 1/2 * (peak amplitude)^2
This formula is apparently a standard electronics formula.
I'm trying to understand where it comes from. How is it possible to get a power figure from a voltage only? There is no information on period, current, or resistance. Can some one please help explain the logic behind this formula for me?
Maybe its a simple trick, to me they've probably simply integrated the sign wave, but the limits must cancel out... i Don't know... help please..
Cheers
(