GB522130A - Improvements in or relating to shaded pole induction disc type electric motors, relays or measuring instruments - Google Patents
Improvements in or relating to shaded pole induction disc type electric motors, relays or measuring instrumentsInfo
- Publication number
- GB522130A GB522130A GB3553038A GB3553038A GB522130A GB 522130 A GB522130 A GB 522130A GB 3553038 A GB3553038 A GB 3553038A GB 3553038 A GB3553038 A GB 3553038A GB 522130 A GB522130 A GB 522130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- supply
- sub
- disc type
- impedance
- relays
- 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
- G01R5/00—Instruments for converting a single current or a single voltage into a mechanical displacement
- G01R5/20—Induction instruments, e.g. Ferraris instruments
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Stepping Motors (AREA)
Abstract
522,130. Supply motors. STANDARD TELEPHONES & CABLES, Ltd., and BRAENDLE, E. W. Dec. 6, 1938, No. 35630. [Class 37] [Also in Group XXXV] In a shaded pole induction disc type motor, relay or measuring instrument, windings are provided on all portions of the split poles and an impedance is connected across each of the said windings, at least one of the impedances being variable. In the form shown in Fig. 2 each pole has four sub-divisions each with a winding A, B, C, D, A', B<1>, C<1> or D<1> connected to a pair of terminals by which impedance connected thereto can be selectively varied. If desired one pole only may be sub-divided and it may have two sub-divisions only. In the form shown in Fig. 5 the motor M may control a carbon pile or other regulator (not shown) for maintaining the voltage of the supply L constant the relative strengths of the shading coils AB depending on the impedance of the valve V1 which varies with fluctuations of the supply L. By connecting the resistance R1 in series with instead of across the supply L, the motor may serve to maintain the current constant. A similar arrangement may be employed to vary the gain of an amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3553038A GB522130A (en) | 1938-12-06 | 1938-12-06 | Improvements in or relating to shaded pole induction disc type electric motors, relays or measuring instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3553038A GB522130A (en) | 1938-12-06 | 1938-12-06 | Improvements in or relating to shaded pole induction disc type electric motors, relays or measuring instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB522130A true GB522130A (en) | 1940-06-10 |
Family
ID=10378762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3553038A Expired GB522130A (en) | 1938-12-06 | 1938-12-06 | Improvements in or relating to shaded pole induction disc type electric motors, relays or measuring instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB522130A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2419396A (en) * | 1943-01-05 | 1947-04-22 | Ericsson Telefon Ab L M | Retarded shaded pole motor |
| US2476657A (en) * | 1943-05-31 | 1949-07-19 | Askania Regulator Co | Electronic motor control circuits |
| US2486935A (en) * | 1946-07-24 | 1949-11-01 | Stewart Warner Corp | Voltage controlled proportional positioning apparatus |
| US2745288A (en) * | 1951-04-09 | 1956-05-15 | Bendix Aviat Corp | Servo system |
| US4511831A (en) * | 1981-04-07 | 1985-04-16 | Mcinnis Stirling A | Speed control of a D.C. electric motor |
| GB2364181A (en) * | 2000-06-27 | 2002-01-16 | Alan Glyn Jones | Electrical motor |
-
1938
- 1938-12-06 GB GB3553038A patent/GB522130A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2419396A (en) * | 1943-01-05 | 1947-04-22 | Ericsson Telefon Ab L M | Retarded shaded pole motor |
| US2476657A (en) * | 1943-05-31 | 1949-07-19 | Askania Regulator Co | Electronic motor control circuits |
| US2486935A (en) * | 1946-07-24 | 1949-11-01 | Stewart Warner Corp | Voltage controlled proportional positioning apparatus |
| US2745288A (en) * | 1951-04-09 | 1956-05-15 | Bendix Aviat Corp | Servo system |
| US4511831A (en) * | 1981-04-07 | 1985-04-16 | Mcinnis Stirling A | Speed control of a D.C. electric motor |
| GB2364181A (en) * | 2000-06-27 | 2002-01-16 | Alan Glyn Jones | Electrical motor |
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