Title:
ELECTRIC BALLAST
Document Type and Number:
WIPO Patent Application WO1999039359
Kind Code:
A3
Abstract:
An electric ballast (1) is provided with an electric coil with windings having a width (d) which are wound on a synthetic resin coil base (10) comprising a box-like base part (11) of rectangular shape having four faces (111, 112, 113, 114). The base part is suited to accommodate an iron core of the coil. The base part is provided on either side with mutually parallel flanges (121, 122) which define the width (d). According to the invention, the coil is provided with a separate, insulating synthetic resin cover which is in one piece and which, in cooperation with the coil base, encloses the coil windings.
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| JP2008166625 | SUBSTRATE TRANSFORMER |
Inventors:
VALLEN JACOBUS W
Application Number:
PCT/IB1999/000055
Publication Date:
October 14, 1999
Filing Date:
January 18, 1999
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS SVENSKA AB (SE)
PHILIPS SVENSKA AB (SE)
International Classes:
H01F27/32; H01F27/02; H01F37/00; H01F38/10; (IPC1-7): H01F27/02
Foreign References:
| US3378800A | 1968-04-16 | |||
| US4222023A | 1980-09-09 |
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