g-parameter analysis of feed-back characteristics of grounded-base transistor amplifier : stability criterion by nyquist's diagram on inductively loaded

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  • ベース接地形トランジスタ増幅器の帰還特性のgパラメータによる解析 : 誘導性負荷時のナイキスト線図による安定判別
  • ベース セッチケイ トランジスタ ゾウフクキ ノ キカン トクセイ ノ gパラメータ ニ ヨル カイセキ ユウドウセイ フカジ ノ ナイキストセンズ ニ ヨル アンテイ ハンベツ

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Grounded-base type is stable in a common use of an ampifier. In case of a heavy inductive load it is supposed to be instable by negative input impedance which arises from internal current feed-back. The author reported previously the usefulness of h-parameter analysis of the stability of grounded-collector, g-parameter is introduced into the approach of the critical behaviour of grounded-base in the aspect of duality. A rational manipulation of an amplification property and circuitry reveals the feed-back characteristics of grounded-base and -collector. Additionally a loop gain which is well introduced into this analysis contributes to the stability criterion.

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