BE431914A - - Google Patents
Info
- Publication number
- BE431914A BE431914A BE431914DA BE431914A BE 431914 A BE431914 A BE 431914A BE 431914D A BE431914D A BE 431914DA BE 431914 A BE431914 A BE 431914A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
- H01H33/161—Variable impedances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/44—Devices for ensuring operation of the switch at a predetermined point in the ac cycle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
- H01H33/161—Variable impedances
- H01H2033/163—Variable impedances using PTC elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE236475X | 1937-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE431914A true BE431914A (en) | 1939-01-31 |
Family
ID=5902061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE431914D BE431914A (en) | 1937-12-31 | 1938-12-30 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE431914A (en) |
| CH (1) | CH236475A (en) |
| DK (1) | DK63640C (en) |
| FR (2) | FR862283A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE740818C (en) * | 1942-02-27 | 1943-10-28 | Ing Karl Kesl | Resistance switch, especially for low frequency alternating current |
| DE969067C (en) * | 1943-02-18 | 1958-04-30 | Aeg | Electric circuit breaker |
| BE519760A (en) * | 1952-05-07 | |||
| DE1023109B (en) * | 1955-11-23 | 1958-01-23 | Siemens Ag | Resistor for electrical switch |
| US3019368A (en) * | 1956-03-29 | 1962-01-30 | Osborne William Lionel | Voltage regulator |
| DE1109240B (en) * | 1957-03-29 | 1961-06-22 | Siemens Ag | Switching device for switching off DC and AC circuits, in which resistance is switched into the circuit by means of moving current collectors |
-
1938
- 1938-12-27 CH CH236475D patent/CH236475A/en unknown
- 1938-12-30 DK DK329738A patent/DK63640C/en active
- 1938-12-30 BE BE431914D patent/BE431914A/xx unknown
- 1938-12-31 FR FR862283D patent/FR862283A/en not_active Expired
-
1941
- 1941-03-05 FR FR51436D patent/FR51436E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR862283A (en) | 1941-03-10 |
| CH236475A (en) | 1945-02-15 |
| FR51436E (en) | 1942-06-24 |
| DK63640C (en) | 1945-06-25 |