May 14, 2009 #1 D dinesh hegde Member level 2 Joined Apr 1, 2009 Messages 42 Helped 4 Reputation 8 Reaction score 3 Trophy points 1,288 Activity points 1,528 Power from power source While calculating the power of power sources (eg: VCC) do we need to consider the average values or the RMS values?
Power from power source While calculating the power of power sources (eg: VCC) do we need to consider the average values or the RMS values?
May 15, 2009 #2 E eem2am Banned Joined Jun 22, 2008 Messages 1,179 Helped 37 Reputation 74 Reaction score 24 Trophy points 1,318 Activity points 0 Power from power source https://www.eng-tips.com/viewthread.cfm?qid=235861
May 15, 2009 #3 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,427 Helped 14,752 Reputation 29,786 Reaction score 14,105 Trophy points 1,393 Location Bochum, Germany Activity points 298,127 Re: Power from power source In the general case (arbitrary source voltage and current) the product of instantaneous voltage and current as to be averaged to calculate the power flowing out of/into the source. Code: P(t) = V(t)*I(t), Pavg = |V(t)*I(t)| For V = const, the expression simplifies to Code: P(t) = V*I(t), Pavg = V*|I(t)| RMS values aren't involved in any case.
Re: Power from power source In the general case (arbitrary source voltage and current) the product of instantaneous voltage and current as to be averaged to calculate the power flowing out of/into the source. Code: P(t) = V(t)*I(t), Pavg = |V(t)*I(t)| For V = const, the expression simplifies to Code: P(t) = V*I(t), Pavg = V*|I(t)| RMS values aren't involved in any case.