AT94008B - Electrodynamic wattmeter. - Google Patents
Electrodynamic wattmeter.Info
- Publication number
- AT94008B AT94008B AT94008DA AT94008B AT 94008 B AT94008 B AT 94008B AT 94008D A AT94008D A AT 94008DA AT 94008 B AT94008 B AT 94008B
- Authority
- AT
- Austria
- Prior art keywords
- coil
- electrodynamic
- wattmeter
- fixed coil
- clear width
- Prior art date
Links
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Description
<Desc/Clms Page number 1>
EMI1.1
Der Zweck der vorliegenden Erfindung ist die Herstellung von elektrodynamischen Wattmetern mit proportionalen Skalen, so dass gleichen Änderungen der zu messenden Leistungen auch gleiche Ausschlagsänderungen entsprechen. Bei den bisher bekannten Wattmetern wurde der gleiche Zweck dadurch zu erreichen versucht, dass man die axiale Länge der festen Spule dem Durchmesser bzw. der langen Seite der beweglichen Spule gegenüber kurz zu machen sich bestrebte, was aber nur durch Einbusse von wirkungsgünstigem Wicklungsraum zu erreichen ist. Gemäss vorliegender Erfindung wurde eine zweckmässige Spulendimensionierung durch Versuche gefunden, wobei die axiale Länge der festen Spule gleich der längsten Seite der beweglichen Spule gemacht werden kann, ohne dass der Verlauf der proportionalen Skala gestört wird.
Durch diese vorteilhafte Ausführung wird viel nutzbringender Wicklungsraum gewonnen, so dass günstige Drehmomente schon mit niederen Amperewindungen erreicht werden.
Wie aus Fig. 1 und 2 ersichtlich, verhält sich die lichte Breite a der beiden Abteilungen und F2 der festen Spule zur lichten Breite c der in der festen Spule angeordneten beweglichen Spule Sp
EMI1.2
Die axiale Länge I der beiden festen Spulenabteilungen Fi und F2, die zusammenwirkend das Hauptstromfeld erzeugen, einschliesslich der Dicke des Befestigungsständers St, Fig. 1, ist gleich der lichten Breite o der beweglichen Spule Sp, was für die Erzeugung der gleichförmigen Skala von besonderer Wichtigkeit ist.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
EMI1.1
The purpose of the present invention is to produce electrodynamic wattmeters with proportional scales so that the same changes in the power to be measured correspond to the same changes in deflection. In the previously known wattmeters, the same purpose was attempted by trying to make the axial length of the fixed coil short compared to the diameter or the long side of the movable coil, which can only be achieved by sacrificing efficient winding space . According to the present invention, an expedient coil dimensioning has been found through experiments, whereby the axial length of the fixed coil can be made equal to the longest side of the movable coil without the course of the proportional scale being disturbed.
A lot of useful winding space is gained through this advantageous design, so that favorable torques can be achieved with low ampere turns.
As can be seen from FIGS. 1 and 2, the clear width a of the two compartments and F2 of the fixed coil is related to the clear width c of the movable coil Sp arranged in the fixed coil
EMI1.2
The axial length I of the two fixed coil compartments Fi and F2, which cooperatively generate the main current field, including the thickness of the mounting stand St, Fig. 1, is equal to the clear width o of the movable coil Sp, which is of particular importance for generating the uniform scale is.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT94008T | 1922-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT94008B true AT94008B (en) | 1923-08-25 |
Family
ID=3613808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT94008D AT94008B (en) | 1922-10-31 | 1922-10-31 | Electrodynamic wattmeter. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT94008B (en) |
-
1922
- 1922-10-31 AT AT94008D patent/AT94008B/en active
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