ZA748142B - Improvements in and relating to electric control circuits - Google Patents
Improvements in and relating to electric control circuitsInfo
- Publication number
- ZA748142B ZA748142B ZA00748142A ZA748142A ZA748142B ZA 748142 B ZA748142 B ZA 748142B ZA 00748142 A ZA00748142 A ZA 00748142A ZA 748142 A ZA748142 A ZA 748142A ZA 748142 B ZA748142 B ZA 748142B
- Authority
- ZA
- South Africa
- Prior art keywords
- relating
- electric control
- control circuits
- circuits
- electric
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
- H05B39/04—Controlling
- H05B39/08—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices
- H05B39/081—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices by measuring the incident light
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4887973A GB1455875A (en) | 1973-12-20 | 1973-12-20 | Electric control circuits |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA748142B true ZA748142B (en) | 1976-01-28 |
Family
ID=10450291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00748142A ZA748142B (en) | 1973-12-20 | 1974-12-20 | Improvements in and relating to electric control circuits |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1455875A (en) |
ZA (1) | ZA748142B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3271869D1 (en) * | 1981-03-31 | 1986-08-07 | Giuseppe Baccanelli | A device permitting of economizing electric lighting energy |
DE3136331A1 (en) * | 1981-09-14 | 1983-03-24 | Steinel GmbH & Co KG, 4836 Herzebrock | ORIENTATION LAMP |
SG151142A1 (en) * | 2007-10-02 | 2009-04-30 | Ettanoor Thuppale Mohan Dass | Switching device |
-
1973
- 1973-12-20 GB GB4887973A patent/GB1455875A/en not_active Expired
-
1974
- 1974-12-20 ZA ZA00748142A patent/ZA748142B/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB1455875A (en) | 1976-11-17 |
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