ZA748142B - Improvements in and relating to electric control circuits - Google Patents

Improvements in and relating to electric control circuits

Info

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
Application number
ZA00748142A
Inventor
B Lamb
Original Assignee
Pentland Electronics Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pentland Electronics Ltd filed Critical Pentland Electronics Ltd
Publication of ZA748142B publication Critical patent/ZA748142B/en

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
ZA00748142A 1973-12-20 1974-12-20 Improvements in and relating to electric control circuits ZA748142B (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
GB1455875A (en) 1976-11-17

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