| 摘要 |
PROBLEM TO BE SOLVED: To reduce a change in an oscillating frequency against fluctuation of a power supply voltage. SOLUTION: The oscillation circuit is provided with an oscillation transistor(TR) 1, a clap capacitor 8 whose one end is connected to a base of the oscillation TR 1, and a resonance line 9 that is connected to the other end of the clap capacitor 8 and a collector of the oscillation TR 1 in terms of high frequencies. An intermediate tap 9a is provided in the resonance line 9 and the other end of the clap capacitor 8 is connected to the tap 9a.
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