10-40 watts magnetic ballast for fluorescent lamps

摘要

The present invention relates to a magnetic ballast for a 10-40 W fluorescent lamp, which comprises an iron core 1 in which a concave groove 103 is formed at the center of its bottom face and coupling grooves 101 and 102 are formed on both sides thereof, The coupling plates 201 and 202 are formed on both sides of the iron core 1 so as to form the protrusion 203 and the fixing plate 2 having the protrusion 203 formed on the center of the coupling plate 201, 102 of the fixed plate 2 are coupled to the iron core and the protruding line 203 is coupled to the entrance of the central recessed groove 103 to form the ventilation hole 2b inwardly A fusion portion 206 is formed in the front wire holder device of the fixing plate 2 so as to form a fusion portion and protrude outward from the inside of the hole by piercing the hole 205 in a straight line with the protrusion line 203 The protruding lines 207 and 208 are formed so that the fixing grooves are formed on both sides of the protruding lines, And the lower plate 4b is provided with coupling grooves 401 and 402 at the upper surface of the protruding lines 207 and 208. The coupling grooves 401 and 402 are formed in the middle of the lower plate, And the upper and lower halves of the wire holder 4 having bolts are screwed into the upper plate 4a and the protective covers 5 and 6 are coated on the coil wire exposed portions so that the current loss is small This makes it possible to obtain a highly efficient fluorescent lamp ballast.