Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· Consider the power system shown below,
· The generator converts some form of mechanical force into electrical power. This power is then distributed to consumers over wires (and through transformers). Finally at the point of application, each load will draw a certain current, at the supply voltage - operating at a rated power. The voltages supplied this way are almost exclusively AC. Also in an ideal situation the load will be pure resistance, but in reality it will be somewhat reactive.
· Another important example of power delivered is when impedence matching between audio amplifiers and audio speakers. Most consumer systems are 50ohm for maximum power transfer and minimum distortion.
