发明名称 |
Hot wire type air flowmeter |
摘要 |
A hot wire type air flowmeter has a drive circuit for controlling the temperature of a hot wire type resistor and for outputting indications of controlling states as electric signals, an output adjusting circuit for adjusting the electric signals output from the drive circuit, and a subtracter provided in the output adjusting circuit of the hot wire type air flowmeter. The electric signals output from a non-inverting amplifier in the drive circuit are input to one input terminal of the subtracter and a standard voltage supplied via a voltage follower are input to the other input terminal of the subtracter.
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申请公布号 |
US5537871(A) |
申请公布日期 |
1996.07.23 |
申请号 |
US19940354036 |
申请日期 |
1994.12.06 |
申请人 |
HITACHI, LTD.;HITACHI AUTOMOTIVE ENGINEERING CO., LTD. |
发明人 |
ITSUJI, TAKAYUKI;AKAMATSU, MASUO;YONEDA, HIROSHI |
分类号 |
G01P5/12;G01F1/68;G01F1/684;G01F1/696;G01F1/698;G01F15/04;(IPC1-7):G01F1/68 |
主分类号 |
G01P5/12 |
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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