Question

O0000 O0000 The amplifier in Figure 5-36 is a low-power andio amplifier. The transfomer is step-down impedance-matching transformer designed to give a reflected reaistance in the primary of 1000 2 when the load is 8 2 (such as the speaker).. The dc resistance of the primary winding is 66 2 and B= 150 (a) Compute Va and the Ig for the transistor (b) Compote A A, and power delivered to the load when the input is 500mV pp +Vcc +18 V Rw 660 Speaker Rt 10 kn 2N3904 10 pF REI 270 V. 500 mV pp R2 6.8 k2 1.0 kHz Re 510 100 pF FIGURE 5-36

Apply the concept of Multistage

Answer 1

Given low Powes amplifiex Caudio) 10Kns Speakes 1OHF SoomN G.K R -PP IDOHF DC analysis t1V +18 V 66n fioo0n O.06GKR RI VL7.29V ef.OSKA 7.n 6.SK2R2 O-S37K Oc -o dc. VOIS Appuy kvL Vit=P2.. 4. 29TX (4.05)07 16. Ri R Rim = 6.8x10 16. IStx0-3 40S+ 0.7 Tas 13 6.59 Jb o.O77405 mA Tc 15O x I

NcE= Vec-BTb 06) ISI X O.O77405 x0- S37 18- 1SOX O.077 40S x0.066 10. 9S Vols Je = (1+ )エ ISIX O.O7740S Te |M.6882 mA Av Av e-m RL C x 1. 066 ISOKO O7409 2S x10 Av 280-5bカーで SoDx (O Ve-e 495. 083 Av V,ニ-87.5a Volt Value

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