What would be a reason for connecting an electrolytic capacitor and a ceramic capacitor in parallel at the input?|FAQ|ROHM Semiconductor

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What would be a reason for connecting an electrolytic capacitor and a ceramic capacitor in parallel at the input?
- It will probably depend on the design specifications of the set, but a large-value electrolytic capacitor is used for the purpose of delaying attenuation of the input voltage when the set power supply is turned off, whereas a ceramic capacitor has a small ESR and so is used to supply charge when there are sudden current changes, as with switching currents.