| 摘要 |
PURPOSE:To make the oscillating frequency small against a humidity change, by connecting an element connected to a hot end of a variable coil via a capacitor, for decreasing a conductor pattern of the hot part. CONSTITUTION:A series capacitor 18 is inserted between capacitors 5, 6' for tuning and a variable coil 2. Thus, the hot end of the variable coil 2 is separated into the 1st hot section 19 and the 2nd hot section 20. The corresponding conductor pattern is also split into two. Each one end of the capacitor 18, a capacitor 3', a capacitor 4', a capacitor 5 and a capacitor 6 is connected to the hot section 20. Thus, since the stray capacitance of the hot section 19 is decreased, the change in the stray capacitance due to the temperature change is reduced and the oscillating frequency is stabilized. |
