| 摘要 |
PURPOSE:To prevent the generation of a noise magnetic field due to an initial coil by grounding one terminal of the intial coil and opening the other terminal. CONSTITUTION:A relay contact 12 is inserted in series to a transistor TP Q1 and an initial coil 7, and the other terminal of the coil 7 is grounded to a ground GND. When the coil 7 is not driven, the TR Q1 is turned off, and the contact 12 is turned off also, and the coil 7 is open completely and is not transformer-coupled to driving coils Cx and Cy, and the noise magnetic field due to the generation of an induced current in the coil 7 is not generated. |
