DE314883C - - Google Patents
Info
- Publication number
- DE314883C DE314883C DENDAT314883D DE314883DA DE314883C DE 314883 C DE314883 C DE 314883C DE NDAT314883 D DENDAT314883 D DE NDAT314883D DE 314883D A DE314883D A DE 314883DA DE 314883 C DE314883 C DE 314883C
- Authority
- DE
- Germany
- Prior art keywords
- direct current
- alternating currents
- wagnerian
- current source
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001939 inductive effect Effects 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 claims description 2
- 230000033764 rhythmic process Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
Der Gegenstand vorliegender Erfindung ist ein Geschwindigkeitsyergleicher, welcher insbesondere für das Synchronisieren von Wechselstrommaschinen verwendet wird und durch Ausschlag nach der einen oder anderen Seite angeben soll, ob die zuzuschaltende Maschine zu schnell oder zu langsam läuft. Diese Angabe erfolgt mittels eines Differential-Voltmeters, dessen beide Systeme die FrequenzenThe object of the present invention is a speed equalizer, which in particular used for synchronizing AC machines and by A deflection to one side or the other should indicate whether the machine to be switched on runs too fast or too slow. This information is provided by means of a differential voltmeter, whose both systems the frequencies
ίο der beiden Wechselströme messen und sich entgegenwirken, so daß das Drehmoment am bewegten Teil von der Differenz der Frequenzen abhängig ist.ίο of the two alternating currents and measure yourself counteract, so that the torque on the moving part depends on the difference in frequencies is dependent.
Schwingrelais mit induktivem Vorschaltwiderstand im Gleichstromkreise zur Messung und Anzeige der Frequenz eines Wechselstromes sind bereits bekannt. Auch die Vergleichung zweier Meßwerte durch ein Differentialrelais ist schon vorgeschlagen worden.Oscillating relay with inductive series resistance in direct current circuits for measurement and display of the frequency of an alternating current are already known. The comparison too two measured values through a differential relay has already been proposed.
Gemäß der Erfindung wird nun als Frequenzmesser ein Differential-Voltmeter mit induktiven Vorschaltwiderständen verwendet, welches von pulsierendem Gleichstrom gespeist wird, und der pulsierende Gleichstrom wird durch je einen periodischen Unterbrecher, etwa in Art eines Wagnerschen Hammers, im Tempo des zugehörigen Wechselstromes erzeugt. Dadurch, daß zur Speisung der beiden Meßzweige dieselbe Gleichstromquelle verwendet wird, scheidet der Einfluß der Spannung in dem fraglichen Wechselstromkreise aus, und die Ausschlagrichtung ist nur noch von der Differenz der Periodenzahlen abhängig. Es kommt aber praktisch hauptsächlich darauf an, eine bestimmte Richtung des Ausschlages zu erzielen, während es nicht erforderlich ist, daß die Amplitude für eine bestimmte Größe der Differenz der Frequenzen immer dieselbe ist. In der Zeichnung sind I, II die beiden parallel zu schaltenden Netze, W1, W2 die Wagnerschen Hämmer, B eine Gleichstromquelle, ζ. B. eine Batterie, D das Differential-Voltmeter und L1, L2 die zugehörigen induktiven Vorschaltwiderstände.According to the invention, a differential voltmeter with inductive ballast resistors is used as a frequency meter, which is fed by pulsating direct current, and the pulsating direct current is generated by a periodic breaker, for example in the manner of a Wagnerian hammer, at the rate of the associated alternating current. Because the same direct current source is used to supply the two measuring branches, the influence of the voltage in the alternating current circuit in question is eliminated and the direction of deflection is only dependent on the difference in the number of periods. In practice, however, it is mainly a matter of achieving a certain direction of the deflection, while it is not necessary that the amplitude is always the same for a certain size of the difference between the frequencies. In the drawing, I, II are the two networks to be connected in parallel, W 1 , W 2 are the Wagnerian hammers, B a direct current source, ζ. B. a battery, D the differential voltmeter and L 1 , L 2 the associated inductive ballast resistors.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE314883C true DE314883C (en) |
Family
ID=567672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT314883D Active DE314883C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE314883C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0093193A1 (en) * | 1982-04-28 | 1983-11-09 | Maschinenfabrik Rau GmbH | Combination of agricultural implements |
-
0
- DE DENDAT314883D patent/DE314883C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0093193A1 (en) * | 1982-04-28 | 1983-11-09 | Maschinenfabrik Rau GmbH | Combination of agricultural implements |
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