Invention Grant
- Patent Title: Battery voltage detecting circuit
- Patent Title (中): 电池电压检测电路
-
Application No.: US12202947Application Date: 2008-09-02
-
Publication No.: US07663375B2Publication Date: 2010-02-16
- Inventor: Yoshiaki Yonezawa
- Applicant: Yoshiaki Yonezawa
- Applicant Address: JP Osaka JP Gunma
- Assignee: Sanyo Electric Co., Ltd.,Sanyo Semiconductor Co., Ltd.
- Current Assignee: Sanyo Electric Co., Ltd.,Sanyo Semiconductor Co., Ltd.
- Current Assignee Address: JP Osaka JP Gunma
- Agency: SoCal IP Law Group LLP
- Agent Steven C. Sereboff; John E. Gunther
- Priority: JP2007-233257 20070907
- Main IPC: G01N27/416
- IPC: G01N27/416
Abstract:
A battery voltage detecting circuit includes: a first capacitor having one end connected to one input terminal of an operational amplifier; a second capacitor having one end connected to an output terminal of the operational amplifier and the other end connected to the one input terminal of the operational amplifier; a third capacitor having one end connected to the other input terminal of the operational amplifier; a fourth capacitor having one end applied with a reference voltage and the other end connected to the other input terminal of the operational amplifier; and a switching circuit configured to electrically connect the one input terminal of the operational amplifier to the one end of the first capacitor after the transient current has stopped flowing.
Public/Granted literature
- US20090066338A1 Battery Voltage Detecting Circuit Public/Granted day:2009-03-12
Information query
