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开环增益（open-loop gain）是運算放大器的參數，一般以表示，是在沒有反馈電路時的增益。 其中 為輸出電壓為放大器正端輸入電壓為放大器負端輸入電壓 運算放大器有很高的開環增益，理想運算放大器的開環增益為無窮大，一般的運算放大器的開環增益約為。一般會加入反馈電路，降低整體電路的增益，但會使系統比較穩定。運算放大器的開環增益隨頻率快速的下降，這也是一般運算放大器限制頻寬的原因之一（另一個限制頻寬的原因是）。
, The open-loop gain of an electronic amplif … The open-loop gain of an electronic amplifier is the gain obtained when no overall feedback is used in the circuit. The open-loop gain of many electronic amplifiers is exceedingly high (by design) – an ideal operational amplifier (op-amp) has infinite open-loop gain. Typically an op-amp may have a maximal open-loop gain of around , or 100 dB. Normally, negative feedback is applied around an amplifier with high open-loop gain, to reduce the gain of the complete circuit to a desired value.f the complete circuit to a desired value.
, オープンループ利得（オープンループりとく、英: open loop gain）とは、帰還増幅器において帰還をかけない場合の利得のこと。
, Il guadagno ad anello aperto di un amplifi … Il guadagno ad anello aperto di un amplificatore è il guadagno ottenuto quando non risulta feedback nel circuito. Il guadagno ad anello aperto, in alcuni amplificatori, può essere estremamente elevato. Un amplificatore operazionale ideale ha un guadagno ad anello aperto infinito. Tipicamente un op-amp ha un guadagno ad anello aperto di circa . Questo guadagno molto alto permette un'ampia scelta di applicare vari livelli di feedback per ottenere la prestazione desiderata. Normalmente, il feedback è applicato a un amplificatore con guadagno ad anello aperto elevato cosicché l'effettivo guadagno è definito e tenuto a un valore desiderato. definito e tenuto a un valore desiderato.
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开环增益（open-loop gain）是運算放大器的參數，一般以表示，是在沒有反馈電路時的增益。 其中 為輸出電壓為放大器正端輸入電壓為放大器負端輸入電壓 運算放大器有很高的開環增益，理想運算放大器的開環增益為無窮大，一般的運算放大器的開環增益約為。一般會加入反馈電路，降低整體電路的增益，但會使系統比較穩定。運算放大器的開環增益隨頻率快速的下降，這也是一般運算放大器限制頻寬的原因之一（另一個限制頻寬的原因是）。
, The open-loop gain of an electronic amplif … The open-loop gain of an electronic amplifier is the gain obtained when no overall feedback is used in the circuit. The open-loop gain of many electronic amplifiers is exceedingly high (by design) – an ideal operational amplifier (op-amp) has infinite open-loop gain. Typically an op-amp may have a maximal open-loop gain of around , or 100 dB. Normally, negative feedback is applied around an amplifier with high open-loop gain, to reduce the gain of the complete circuit to a desired value.f the complete circuit to a desired value.
, Il guadagno ad anello aperto di un amplifi … Il guadagno ad anello aperto di un amplificatore è il guadagno ottenuto quando non risulta feedback nel circuito. Il guadagno ad anello aperto, in alcuni amplificatori, può essere estremamente elevato. Un amplificatore operazionale ideale ha un guadagno ad anello aperto infinito. Tipicamente un op-amp ha un guadagno ad anello aperto di circa . Questo guadagno molto alto permette un'ampia scelta di applicare vari livelli di feedback per ottenere la prestazione desiderata.ck per ottenere la prestazione desiderata.
, オープンループ利得（オープンループりとく、英: open loop gain）とは、帰還増幅器において帰還をかけない場合の利得のこと。
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| rdfs:label |
开环增益
, Open-loop gain
, Guadagno ad anello aperto
, オープンループ利得
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