发明名称 |
Schaltkreis zur Erfassung von Strom für einen Lambda-Sensor |
摘要 |
A highly flexible current detection circuit for an A/F sensor, that can readily provide for a change to an A/F sensor having a difference characteristic. The A/F sensor current detection circuit of the invention comprises: an operational amplifier for generating a voltage to be applied to the A/F sensor; a current-measuring first resistor connected between the operational amplifier and the A/F sensor; voltage-dividing second and third resistors connected in series with each other with one end thereof connected between the operational amplifier and the first resistor; a first output terminal provided between the operational amplifier and the first resistor; a second output terminal provided between the first resistor and the A/F sensor; and a third output terminal provided between the voltage-dividing second and third resistors. When measuring the sensor element admittance with this circuit, the third output terminal is used in place of the first output terminal. |
申请公布号 |
DE10306481(B4) |
申请公布日期 |
2006.11.09 |
申请号 |
DE2003106481 |
申请日期 |
2003.02.14 |
申请人 |
FUJITSU TEN LTD.;TOYOTA JIDOSHA K.K. |
发明人 |
FUKUDA, TERUHISA;MORIGUCHI, HIROSHI;HATTORI, KAZUTAKA;IKEDA, SHINJI |
分类号 |
G01N27/41;G01N27/416;F02D45/00;G01R19/00 |
主分类号 |
G01N27/41 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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