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GB1436129A - Inductance structures for electrical lamp circuits - Google Patents

Inductance structures for electrical lamp circuits

Info

Publication number
GB1436129A
GB1436129A GB1770773A GB1770773A GB1436129A GB 1436129 A GB1436129 A GB 1436129A GB 1770773 A GB1770773 A GB 1770773A GB 1770773 A GB1770773 A GB 1770773A GB 1436129 A GB1436129 A GB 1436129A
Authority
GB
United Kingdom
Prior art keywords
core
windings
winding
different lengths
auxiliary
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
Application number
GB1770773A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EMI Group Ltd
Original Assignee
Thorn Electrical Industries 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 Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Priority to GB1770773A priority Critical patent/GB1436129A/en
Publication of GB1436129A publication Critical patent/GB1436129A/en
Expired legal-status Critical Current

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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch
    • H05B41/23—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps
    • H05B41/2325—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps provided with pre-heating electrodes

Landscapes

  • Coils Of Transformers For General Uses (AREA)

Abstract

1436129 Inductors and transformer THORN ELECTRICAL INDUSTRIES Ltd 4 Feb 1974 [12 April 1973] 17707/73 Heading HIT [Also in Division H2] A lamp starting circuit comprises a choke having windings 11, 12 in the form of flattened loops joined in series and coupled in flux opposition on a common laminated shell core 13, and at least one auxiliary similar core 14 embracing one of the windings only. The windings may be of different lengths but of the same width, as shown, or of different lengths and widths with one winding within the other (Fig. 2, not shown), or may be identical both in shape and in their number of turns (Fig. 3, not shown). In the last-mentioned case, there is one auxiliary core associated with each winding (54, 55). The cores are assembled from magnetic laminations based on variations of E-E or E-I combinations. Core 13 comprises two E- laminations 15, 16 with an insulating spacer 17. Core 14 is provided with a similar spacer (24). Some specific lamp starter and operating circuits are disclosed (Figs. 5-7, not shown, see Division H2).
GB1770773A 1973-04-12 1973-04-12 Inductance structures for electrical lamp circuits Expired GB1436129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1770773A GB1436129A (en) 1973-04-12 1973-04-12 Inductance structures for electrical lamp circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1770773A GB1436129A (en) 1973-04-12 1973-04-12 Inductance structures for electrical lamp circuits

Publications (1)

Publication Number Publication Date
GB1436129A true GB1436129A (en) 1976-05-19

Family

ID=10099796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1770773A Expired GB1436129A (en) 1973-04-12 1973-04-12 Inductance structures for electrical lamp circuits

Country Status (1)

Country Link
GB (1) GB1436129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005010234U1 (en) * 2005-06-29 2006-11-09 Vogt Electronic Components Gmbh Swinging choke for lighting applications

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005010234U1 (en) * 2005-06-29 2006-11-09 Vogt Electronic Components Gmbh Swinging choke for lighting applications

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee