Battery check system

• US 4,792,762 A
• Filed: 08/24/1987
• Issued: 12/20/1988
• Est. Priority Date: 08/28/1986
• Status: Expired due to Term

• Current Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Iwamoto, Junichi, Goto, Shigenori, Shiina, Michihiro, Hamada, Hisashi
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): Miele, Anthony L.
• Application Number:
  US07/088,940
• Time in Patent Office: 484 Days
• Field of Search: 324/426, 324/433, 324/437, 324/120, 340/636, 320/48, 429/7, 429/97, 354/468, 354/484
• US Class Current: 324/426
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G01R 31/385 Arrangements for measuring battery or accumulator variables for monitoring G01R31/382

Abstract

A battery check system for a device which can be supplied with power either from a battery pack or from a D.C. plug adapted to be connected to an A.C. source by way of an AC/DC converter is provided with a large current load check mode for checking the supply voltage under a large load condition and a small current load check mode for checking the supply voltage under a small load. There is provided a mode switching means for setting the mode of the battery check system to the large current load check mode when said device is to be supplied with power from the battery pack and to the small current load check mode when said device is to be supplied with power through the D.C. plug.

Claims

1. A battery check system for a device which can be supplied with power either from a battery pack or from a D.C. plug adapted to be connected to an A.C. source by way of an AC/DC converter, the battery pack and the D.C. plug being adapted to be selectively mounted on a power supply mounting portion of the device, characterized in that the battery check system is provided with a large current load check mode for checking the supply voltage under a large load condition and a small current load check mode for checking the supply voltage under a small load, and there is provided a mode switching means for setting the mode of the battery check system to the large current load check mode when the battery pack is mounted on the power supply mounting portion of the device and to the small current load check mode when the D.C. plug is mounted on the said power supply mounting portion.

2. A battery check system as defined in claim 1 in which said switching means comprises a switch which is automatically actuated in response to the mounting of the battery pack or the D.C plug.