ceceworksheet

ceceworksheet - 10v L V A CC Ska 701:0 RC C2 Rt‘Rn soon...

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Unformatted text preview: 10v L V A CC! Ska 701:0 RC} C2 Rt‘Rn soon CI r Tl WC‘IICE woRKS‘AE‘ET (EE 2553 Transistor Specs Brie! = 250, Baez = 350 \$01: B02 7- 520 {1:1, "9 = 0.70 for T1 and T2 (Al'- G!) : 1'31 ( I] {S «‘50 To) Tug-fake (r, .5 «[50 (Bldg) 6%": 1a. Draw the small—signal hybﬁd-n model than is applicable for low, middie, and high fre- quencics. 1b. Fill in each entry of the following table with an "S" for short-circuit, an "0" for open- circuit, or an "E" for exact value to indicate how the capacitor indicated by the row label should be modeled in the small—signal equivalent circuit for the frequency range indicated by the column heading. Use the judgment of a good design engineer by using the exact value of the capacitors only when necessary, i.e., do not choose "E" for every entry. High-Frequency Low-Frequency Mid-Frequency WERE Is. For the Case of high frequency. ﬁnd the equivalent resistance, Rm, seen by the capacitor labeled Cuz in the small-signal model. .. . 1d. Estimate the upper half—power frequency, (DH, assuming that the caﬁacitor labeled Cu; in the small—signal model has the predominant effect in determining that frequency. Express your answer in terms of C”. m _ ._._.___ 1e. For the case of low frequency, the equivalent resistance. Rqu, seen by the capacitor labeled C51 is given by _ rx1+(Rs“ Rtlle) Reql - Rat H {501 +1 - Find the equivalent resistance, qu2, seen by capacitor C52. .- lf. Design the circuit so that C51 = CE; and so fL, satisﬁes 15<fL<30 Hz You may assume at the capacitors C1, C2, and C3 are large enough so that the lower ha1f~power frequency is t predominantly by C5, and C52. lg. For the mid—frequency case. ﬁnd the output impedance 29. 1h. Find the mid-frequency voltage gain, Amman. deﬁned by Av. Va (mid)=“\7: ...
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ceceworksheet - 10v L V A CC Ska 701:0 RC C2 Rt‘Rn soon...

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