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B． 相對(duì)穩(wěn)壓系數(shù)：標(biāo)明負(fù)載不變時(shí)，穩(wěn)壓器輸出直流電壓Uo的相對(duì)改動(dòng)量△Uo與輸出電網(wǎng)Ui的相對(duì)改動(dòng)量△Ui之比。急：
S=△Uo/Uo / △Ui/Ui2. 電網(wǎng)調(diào)整率。
它標(biāo)明輸入電網(wǎng)電壓由額外值改動(dòng) -10%時(shí)，穩(wěn)壓電源輸出電壓的相對(duì)改動(dòng)量，有時(shí)也以必定值標(biāo)明。
電壓安穩(wěn)度。
負(fù)載電流堅(jiān)持為額外計(jì)劃內(nèi)的任何值，輸入電壓在規(guī)矩的計(jì)劃內(nèi)改動(dòng)所致使的輸出電壓相對(duì)改動(dòng)△Uo/Uo（百分值），稱為穩(wěn)壓器的電壓安穩(wěn)度。二． 負(fù)載對(duì)輸出電壓影響的幾種政策方法。
1． 負(fù)載調(diào)整率（也稱電流調(diào)整率）。
在額外電網(wǎng)電壓下，負(fù)載電流從零改動(dòng)到最大時(shí)，輸出電壓的最大相對(duì)改動(dòng)量，常用百分?jǐn)?shù)標(biāo)明，有時(shí)也用必定改動(dòng)量標(biāo)明。
2． 輸出電阻（也稱等效內(nèi)阻或內(nèi)阻）。
在額外電網(wǎng)電壓下，因?yàn)樨?fù)載電流改動(dòng)△IL致使輸出電壓改動(dòng)△Uo，則輸出電阻為.

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