| 摘要 |
The invention relates to the supply of lamps ( 8'', 8 ''') of at least two different lamp types, of which a first lamp type ( 8 ''') has a wattage which is approximately a whole multiple of the wattage of a second lamp type ( 8 ''), whereby the same ballast devices ( 1 ) are used, embodied for the direct supply of the second lamp type ( 8 '') and which may be operated in parallel for the supply of the first lamp type ( 8 '''). The correct connection of a suitable lamp ( 8', 8'', 8 ''') to the ballast device ( 1 ) is monitored by means of a signal exchange between ballast device ( 1 ) and lamps ( 8', 8'', 8 ''') before switching on the supply line of the ballast device ( 1 ). |
