Details of glossary(C, D)
Capacitor
Electronic components that charge and discharge electric charge. Normally, the voltage drops as discharged.
Commercial power source
It is the electricity supplied from a power plant to ordinary households and factories. The commercial power source is AC, and its frequency is 50Hz in eastern Japan and 60Hz in western Japan.
Diode
It is an electronic component that aligns the direction of current (rectification) and keeps a voltage constant.
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