efficiency

In a power supply circuit, the proportion of output power excluding losses from the input power. It is expressed by the following formula.

(Output power/Input power)x100(%)

The smaller the losses such as resistive loss that occur when converting the input voltage, the higher the efficiency becomes. It is one of the important indicators representing the performance of a power supply circuit, and higher efficiency is desirable. Since losses ultimately become heat, if efficiency is low, heat countermeasures such as forced cooling may be required. In recent years, with the spread of photovoltaic power generation and storage batteries, power conversion circuits such as power conditioners have been improving in efficiency. Toward a decarbonized society in the future, higher efficiency is required for power conversion circuits.