Ac adapter and electronic apparatus unit
AssigneeFujitsu Limited
InventorToshihiro MIYAMOTO
Life of this patent
Estimating the term…
Abstract
An AC adapter includes a conversion part, an output terminal, and a voltage adjusting circuit. The conversion part converts alternating current input to an input terminal into a direct current. The output terminal supplies the direct current to an electronic apparatus outside. The voltage adjusting circuit lowers a voltage of the output terminal by a predetermined voltage from a regular supply voltage in a term after the AC adapter is connected to the electronic apparatus until a predetermined time lapses.
Claims8
An AC adapter comprising:
- a conversion part configured to convert alternating current input to an input terminal into a direct current;
- an output terminal configured to supply the direct current to an electronic apparatus outside;
- and
- a voltage adjusting circuit configured to lower a voltage of the output terminal by a predetermined voltage from a regular supply voltage in a term after the AC adapter is connected to the electronic apparatus until a predetermined time lapses.
An electronic apparatus unit comprising:
- an AC adapter;
- and
- an electronic apparatus, wherein the AC adapter includes:
- a conversion part configured to convert alternating current input to an input terminal into a direct current;
- an output terminal configured to supply the direct current to an electronic apparatus outside;
- and
- a voltage adjusting circuit configured to lower a voltage of the output terminal by a predetermined voltage from a regular supply voltage in a term after the AC adapter is connected to the electronic apparatus until a predetermined time lapses,
- the electronic apparatus is configured to receive power supply by being connected to an output terminal of the AC adapter, and includes a control part configured to determine a specification of the AC adapter based on a voltage decrease amount when the output terminal of the AC adapter is connected.
An electronic apparatus which receives a power supply by being connected to an output terminal of an AC adapter, the electronic apparatus comprising:
- a control part configured to determine a specification of the AC adapter based on a voltage decrease amount of an output terminal of the AC adapter when the output terminal of the AC adapter is connected.
Dependencies are inferred from the claim text.