Arrangement for generating DC magnetic fields of alternating polarity for the magnetic-inductive flow measurement
US4410926A · kind A · utility
71Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1982 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | Aug 6, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/64
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
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 ##EQU1## wherein L is the inductance and R the ohmic resistance of the field coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.