41. This filter is called an exciter filter, and it allows only the radiation to pass which is needed to induce a particular fluorescence. 42. The exciter windings in the armature are connected to units called rotating rectifiers which convert ( rectify ) the AC current into DC current. 43. To provide the DC field excitation power supply, Ward Leonard systems usually include an exciter generator that is driven by the prime mover. 44. It was equipped with a Harris RF-1310 exciter , Harris RF-590 receiver, 4-1000a tube and 810s modulators. 45. In mid-1985, on a bill with Exciter , Megadeth played its first North American tour : the Killing for a Living Tour. 46. This DC current in the exciter windings forms an electro magnet, which induces an ac current in the matching exciter windings in the armature. 47. This DC current in the exciter windings forms an electro magnet, which induces an ac current in the matching exciter windings in the armature. 48. The British band Depeche Mode performed at the amphitheatre three times : the first one was on August 5, 2001 during their Exciter Tour. 49. On 20 April 1942 " Sting " was delivered to the US Navy, commissioned as USS " Saturn " and exciter . 50. The direct current in the rotor field winding is fed through a slip-ring assembly or provided by a brushless exciter on the same shaft.