# power efficiency (PE)

Power efficiency is defined as the ratio of output power to input power. It corresponds to efficiency and is designated by the Greek letter Eta and expressed as a percentage: eta = 100 % pout/ pin.

Power efficiency applies to all electronic quad poles, components and modules. For example, the conduction efficiency of OLEDs is the ratio of emitted light power in lumens( lm) to supplied power in watts (W): lm/W. In photovoltaic systems, where the DC voltage is converted from DC to AC by inverters and micro-inverters, the power efficiency is calculated from the ratio of the output power to the input power.

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 Englisch: power efficiency - PE Updated at: 07.09.2019 #Words: 101 Links: power (P), pin, light, lumen (lm), indium (In) Translations: DE Sharing: