GB420300A - Improvements in and relating to means for controlling electric circuits - Google Patents
Improvements in and relating to means for controlling electric circuitsInfo
- Publication number
- GB420300A GB420300A GB15170/33A GB1517033A GB420300A GB 420300 A GB420300 A GB 420300A GB 15170/33 A GB15170/33 A GB 15170/33A GB 1517033 A GB1517033 A GB 1517033A GB 420300 A GB420300 A GB 420300A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- saturable inductance
- series
- condenser
- relay
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/18—Propellers with means for diminishing cavitation, e.g. supercavitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/26—Blades
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
420,300. Automatic regulation. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Suits, C. G.; 1740, Union Street, Schenectady, New York, U.S.A.) May 25, 1933, No. 15170. Convention date, May 26, 1932. [Class 38 (iv)] The windings of electroresponsive devices, e.g., relays, are supplied with voltage from a circuit comprising a saturable inductance in parallel with a condenser so that small current variations at a critical current value produce large voltage variations in the circuit to render the relay more sensitive to current variations. A resistance may be connected in series with the saturable inductance. In the form shown in Fig. 1 the circuit comprising a resistance, saturable inductance and condenser 11, 12, 13 is connected in series with the load 14. In a modification the circuit is transformer coupled, the transformer secondary acting as the saturable inductance. In a further modification of this, two circuits are used, their outputs being connected in series opposition through the relay, &c. This arrangement gives a response curve as shown in Fig. 7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US420300XA | 1909-09-10 | 1909-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB420300A true GB420300A (en) | 1934-11-26 |
Family
ID=21919664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15170/33A Expired GB420300A (en) | 1932-05-26 | 1933-05-25 | Improvements in and relating to means for controlling electric circuits |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR420300A (en) |
| GB (1) | GB420300A (en) |
-
1910
- 1910-09-10 FR FR420300A patent/FR420300A/en not_active Expired
-
1933
- 1933-05-25 GB GB15170/33A patent/GB420300A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR420300A (en) | 1911-01-26 |
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