| 摘要 |
<p>An electrodeless low-pressure discharge lamp (1) according to the invention comprises a light-transmitting discharge vessel (10) which is provided with an ionizable filling. The discharge vessel has a cavity (11) in which an electric coil (2) is arranged which is provided with a primary and a secondary winding (21, 22, respectively) around a metal body (20), the primary winding (21) of the coil being connected to a first and a second electrical conductor (31, 32, respectively) of a cable (3) for connection to a first and a second ouptut terminal (51, 52, respectively) of a high-frequency supply (5), the second output terminal (52) of the supply (5) being free from high-frequency voltage variations relative to ground (M). The secondary winding (22) is connected at one of its ends (22a) to the second electrical conductor (32) and has a further, free end (22b). The electrical conductor (31, 32) are electrically insulated from one another, the second electrical conductor (32) surrounding the first electrical conductor (31). The metal body (20) is capacitively coupled to the second electrical conductor (32). A reduction in electromagnetic interference fields is realized thereby in a simple manner.</p> |
