Complex power calculations

  • Thread starter arkturus
  • Start date
  • #1
27
0
I don't have a question about a specific HW problem, just a general questions.

When calculating complex power, I understand it's S = Veff*Ieff(conjugate). However, S can also be calculate as S = 1/2 * V * I. Why is this? I feel I'm missing something simple, but I'm pretty lost because the current chapter in circuit theory has a bunch of definitions.
 

Answers and Replies

  • #2
Zryn
Gold Member
310
0
When you say S = Veff*Ieff(conjugate), what does the 'eff' stand for, and what is the difference between Veff and V, or Ieff and I?

Veff * Ieff = V/<something> * I/<something> = VI / <something>^2 ...
 
  • #3
27
0
Ah thanks, simple enough. VeffIeff = V/sqrt(2) * I/sqrt(2) which simplifies to VI/2. Much appreciated.
 

Related Threads on Complex power calculations

Replies
1
Views
3K
  • Last Post
Replies
1
Views
829
  • Last Post
Replies
18
Views
1K
  • Last Post
Replies
4
Views
836
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
12
Views
901
  • Last Post
Replies
1
Views
2K
Replies
2
Views
2K
  • Last Post
Replies
2
Views
2K
Replies
4
Views
2K
Top