| 摘要 |
1,097,130. Vibrator supply arrangements. SKODA OBOROVY PODNIK. July 11, 1966 [July 28, 1965], No. 31035/66. Heading G4F. A circuit for an A.C. electromagnet has an A.C. exciter winding 3 which produces oscillations in a body 4 and a biasing D.C. winding 2 in series with at least one choke coil 5, a capacitor 8 being in parallel with coil 5 or with the winding 2. |
