GB429478A - Means for detecting the movement or speed of the rotor of an induction motor - Google Patents
Means for detecting the movement or speed of the rotor of an induction motorInfo
- Publication number
- GB429478A GB429478A GB31502/34A GB3150234A GB429478A GB 429478 A GB429478 A GB 429478A GB 31502/34 A GB31502/34 A GB 31502/34A GB 3150234 A GB3150234 A GB 3150234A GB 429478 A GB429478 A GB 429478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- rotor
- movement
- lamp
- voltage
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- X-Ray Techniques (AREA)
Abstract
429,478. Motors; R÷ntgen-ray apparatus. MULLER AKT.-GES., C. H. F., 24, R÷ntgenstrasse, Hamburg, Germany. Nov. 2, 1934, No. 31502. Convention date, Nov. 3, 1933. [Class 35] In an induction motor having star-connected stator phase windings two of which are connected directly and the third through a condenser 5 to a single phase supply 2, 3, the condenser is shunted by a voltage indicator 6 whereby movement of the rotor 7 is detected. The invention is based upon the increase of voltage across the condenser when rotation commences and the indicator may comprise a glow discharge lamp which lights up at the increased voltage. A potentiometer may be connected across the condenser, the glow discharge lamp being connected thereto by fixed and adjustable contacts so that it glows when the rotor starts or is rotating at a desired speed. The invention is specially applicable to X-ray tubes having anodes rotated by external windings wherein it is difficult to detect the movement of the rotor. In such an application, the potentiometer resistance 11 may be wound around a cap 10 partly enclosing the lamp 9. A ring 12 surrounding the cap carries a contact 15 making a sliding connection with the resistance wire whereby rotation of the ring varies the potential applied to the lamp. The apparatus may be mounted on the X-ray tube or on the switchboard.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE429478X | 1933-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB429478A true GB429478A (en) | 1935-05-30 |
Family
ID=6477617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31502/34A Expired GB429478A (en) | 1933-11-03 | 1934-11-02 | Means for detecting the movement or speed of the rotor of an induction motor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB429478A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3041520A (en) * | 1958-07-16 | 1962-06-26 | Barber Colman Co | Motor and speed indicating apparatus |
| US4791343A (en) * | 1987-08-31 | 1988-12-13 | Allied-Signal Inc. | Stepper motor shaft position sensor |
-
1934
- 1934-11-02 GB GB31502/34A patent/GB429478A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3041520A (en) * | 1958-07-16 | 1962-06-26 | Barber Colman Co | Motor and speed indicating apparatus |
| US4791343A (en) * | 1987-08-31 | 1988-12-13 | Allied-Signal Inc. | Stepper motor shaft position sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| IT1008407B (en) | ELECTRICAL DEVICE FOR REGULATING THE NUMBER OF REVOLUTIONS OF AN ALTERNATING CURRENT MOTOR | |
| GB429478A (en) | Means for detecting the movement or speed of the rotor of an induction motor | |
| US1464184A (en) | Electric motor | |
| US2120100A (en) | Indicator device | |
| US2127605A (en) | Stroboscopic apparatus | |
| US2260769A (en) | Stoker shear pin alarm | |
| US1572940A (en) | Transmission dynamometer | |
| GB465406A (en) | Improvements in and relating to apparatus for indicating or recording measurements | |
| US3274472A (en) | Two speed induction motor | |
| US2401839A (en) | Electrical indicator | |
| ES321650A1 (en) | An electric motor for an armored refrigerated machine, with auxiliary phase of resistance. (Machine-translation by Google Translate, not legally binding) | |
| GB502090A (en) | Improvements in and relating to illuminated signs, and devices for use therewith | |
| US2177966A (en) | Electrical remote control drive | |
| FR2213833A1 (en) | Electric seam-welding machine - with rotating electrode and flexible current leads that do not impair electrode movement | |
| SU27503A1 (en) | A device for registering just machine tools. | |
| US1525268A (en) | Electrical therapeutic apparatus | |
| SU72911A1 (en) | Welding current converter | |
| SU56023A1 (en) | Device for disconnecting an asynchronous motor from the mains when it is braked by countercurrent | |
| SU423013A1 (en) | ROTARY ELECTROVISCOMETER | |
| SU59732A1 (en) | Synchronized asynchronous motor | |
| GB167500A (en) | Improvements in or relating to synchronism apparatus | |
| SU387444A1 (en) | DEVICE FOR STARTING ASYNCHRONOUS MOTOR WITH A PHASE ROTOR | |
| GB548661A (en) | Improvements relating to apparatus for visually indicating the rotation of revolving shafts and the like | |
| AU2065124A (en) | An improved adjustable rotating resistance, more particularly for polyphase induction motors with centrifugal starters | |
| GB734235A (en) | Improvements in or relating to indicating devices |