A Temperature Compensated Quartz-Crystal Oscillator Using Two Crystals

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  • 振動子2個用いて温度特性を改善した水晶発振回路
  • シンドウシ 2コ モチイテ オンド トクセイ オ カイゼンシタ スイショウ ハ

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The present paper is concerned with a quartz-crystal oscillator of which frequency temperature characteristics are improved by using two crystals. The feature of the oscillator is that the two Crystals which act to compensate temperature characteristics with each other are coupled with two C-MOS invertors, respectively. The C-MOS invertor circuit can operate at a low voltage and with a low power consumption by connecting two gates of complementary FET's separately, one to the earth and the other to the power source through appropriate resistances. Two types of the oscillator circuits, 1 ) series excitation and series control, and 2) parallel excitation and series control, are investigated, and the results are verified by experiments. Another circuit in parallel excitation and series control with lower power consumption is also mentioned here.

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