发明名称 |
Arrangement for generating DC magnetic fields of alternating polarity for the magnetic-inductive flow measurement |
摘要 |
An arrangement for generating DC magnetic fields of alternating polarity for the magnetic-inductive flow measurement by means of a field coil which is connected via alternately controlled switching members to a DC voltage source, wherein during the reversal time following the change-over of the switching members a capacitor is connected to the field coil to form a resonant circuit separate from the DC voltage source and the capacitance C of the capacitor in dependence upon the desired reversal time DELTA t has substantially the value <IMAGE> wherein L is the inductance and R the ohmic resistance of the field coil.
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申请公布号 |
US4410926(A) |
申请公布日期 |
1983.10.18 |
申请号 |
US19820406061 |
申请日期 |
1982.08.06 |
申请人 |
FLOWTEC AG |
发明人 |
HAFNER, PETER;FLECKEN, PETER |
分类号 |
G01R33/12;G01F1/60;H01F7/20;H03K17/0416;H03K17/64;H03K17/66;(IPC1-7):H02H3/00;H02H7/12 |
主分类号 |
G01R33/12 |
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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