Editing Electrical efficiency (section)

== Discussion ==
High efficiency is particularly relevant in [[system]]s that can operate from [[Battery (electricity)|batteries]]. Inefficiency may require weighing the cost either of the wasted energy, or of the required [[power supply]], against the cost of attaining greater efficiency. Efficiency can usually be improved by choosing different components or by redesigning the system. Inefficiency probably produces extra heat within the system, which must be removed if it is to remain within its [[operating temperature]] range.  In a climate-controlled environment, like a home or office, heat generated by appliances may reduce heating costs or increase air conditioning costs.

[[Impedance bridging]] connections have a load impedance much larger than the source, which helps transfer voltage [[signals]] at high electrical efficiency.