| 摘要 |
PURPOSE:To realize downsizing, and improve withstand voltage while using a bobbin as a dielectric by constituting a starter integrally of a coil and a variable capacitor. CONSTITUTION:One end side of a bobbin 31 is fixed to a member 32 by means of a screw 41, and a coil 34 is wound round a core 35. The winding part is covered with a shield case 33. The bobbin 31 is formed of plastic or the like, and a screw hole is bored in a lengthwise direction of the center, and a screw 46 is fitted. In front of the bobbin 31, a washer 35 is interposed between it and a head part of the screw 46, and is fitted loosely to the bobbin 31 by means of a guide pin 40. An incoming line 47 is fixed to the washer 35 by means of a pin 48. One end metallic part of the coil 34 is fixed to the reverse of the head part of the bobbin 31 by means of a pin 42, and a high pressure side line 48 is pulled out from the pin 42, and the other side of the coil 34 is formed as a low pressure side line 49. The screw 46 and and the washer 35 are formed of metal, and when the screw 46 is turned, capacity of a dielectric capacity Cs of the head part of the bobbin 31 can be adjusted sightly. |
