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工程與科技 大學

深綠色箭頭為什麼那邊要用Re1不能用Rπ 淺綠色螢光筆框框處為什麼有負號

如圖所示的三級串接負回授结 構,已知Emiz=100mA/V, ign = 20 mA/V, h% = 100 台 「如,試求其迴路增益。 [4] =r=h g = 100 100=1kQr₁ = h 電子學第四冊 IV V=0 A₁B₁ = 例題 14-8 =-Bz2 關於迴路增益 AA 測試,其相關電路 關閉信號源 其中,因Q 共射放大器為單向,該處的輸入電阻與其他無關,所以 最佳切開點選在「Q的輸入端」 R = R | = R || 1+h -V =100× R9kQ X T R1002 x x x 關聯V跳 vi I I x X 分析步驟: (a)切開閉迴路,切口看人等效電阻R=r=k2 10002 R R₂ + R₁₁ 5 5+13.75 R. 392 {R x101x -Rex(1+h)x R (b) 在響應端並聯一電阻R,並在測試端加上電壓源V ey (C)為了便於分析,於是先定義出各處等效電阻,加以整理,如圖所示 者,分別是: 1₁ I V V bi x 0.1 0.649 + 0.1 R T V co Re5kn 第十四章 負回授放大器 1- R₁ = ₁; +(1+h) (R₁ + R₂)||R₁|=5+ 101×00.649||0.1) rex 21 =13.75k2 (d)迴路增益分析:算法如下所列 Q方面:採用轉導放大,將信號轉成電流信號,再計算進化的 分流。不過,對於Q 而言,此分流為倒流者 Q方面:為射極追隨器,採用電流放大論點,再以分流觀念,計算 流入Q輸入端的電流 V R, www 6402 =h/g=100 20=5k$2. 1000 AI -=100|| 392 Q方面:為共基放大器,因輸入端有分支,遂用轉導放大觀念牙計 算出響應端電壓V RE Rask R₂ www 6402 (R+R) + R₂ Rea0.6k 1002 Re × 0.009×100X R 0.6k25R2 9×1 9+1 V 1000 Re ×R ×g (RRY = 291.27 說明: (1)此迴路增益A3與R 無關,這是因為不考慮r 之故。 (2)若考慮時,則將會干擾R 與此刻的人,而干擾的程度與尺, 門 1. 21 有關。因此,這時的迴路增益A 值將有關於R,所幸,此關聯 性甚弱,遂可忽略之。

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商業與管理 大學

綠色螢光筆的不是很了解 1. 為什麼會有5呢? 2. 為何要加52000

dand 2. (LO 3, 4) On January 1, 2020, Hayslett AG had the following equity accounts. Share Capital-Ordinary (€10 par value, 260,000 shares issued and outstanding) Share Premium-Ordinary Retained Earnings During the year, the following transactions occurred. April 1 May 1 June 1 Aug. 1 31 Dec. 1 Declared a €1.50 cash dividend per share to shareholders of record on April 15, payable May 1. Paid the dividend declared in April. Announced a 2-for-1 share split. Prior to the split, the market price per share was €24. Declared a 10% share dividend to shareholders of record on August 15, distributable August 31. On August 1, the market price of the shares was €10 per share. Issued the shares for the share dividend. Declared a €1.50 per share dividend to shareholders of record on December 15, payable January 5, 2021. Determined that net income for the year was €600,000. 31 Instructions Solution 2. a. Apr. 1 May 1 June 1 Aug. 1 31 Dec. 1 31 1 Cash Dividends (260,000 × €1.50) Dividends Payable Dividends Payable Cash No journal entry needed for share split Share Dividends (52,000* × €10) Ordinary Share Dividends Distributable (52,000 × €5) Share Premium-Ordinary (52,000 × €5) *520,000 x.10 Ordinary Share Dividends Distributable Share Capital-Ordinary Cash Dividends (572,000** × €1.50) Dividends Payable **(260,000 × 2) + 52,000 Income Summary €2,600,000 1,500,000 3,200,000 Retained Earnings Retained Earnings Share Dividends Cash Dividends (€390,000+ €858,000) 390,000 390,000 520,000 | 260,000 858,000 600,000 1,768,000 390,000 390,000 260,000 260,000 Prepare dividend ent section. 260,000 858,000 600,000 520,000 1.248,000 14. Luz (a) r equ 15. pre 16- 17 for 18

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