Question

Vcc= 15 V Rc 2 kO R1 10 kO Vo C1 R2=5 kQ Vs RE= 2 kQ Figure 1.1 [Rajah 1.1) SECTION A Bakagian A Question 1 Soalan 1 State THREE (3) operating regions in Bipolar Junction Transistor (BJT) and (a) briefly explain. [Nyatakan TIGA (3) kawasan operasi untuk transistor simpang dwikutub (BJT) dan jelaskan.] (3 Marks/Markah) (b) Based on the Figure 1.1, given B 100 and VBE (ON) 0.7 V. [Berdasarkan Rajah 1.1, diberi B 100 dan Vas (ON = 0.7 V Find the value for Ia, Ic, IE and VCE [Dapatkan nilai bagi I Ic Is and VcE) (i) (8 Marks/Markah (ii) Identify the type of amplifier circuit [Kenalpasti jenis litar penguat. (1 Mark/ Markah) Sketch and label the small signal equivalent circuit. [Lakarkan dan labelkan litar setara isyarat kecil. (iii) (3 Marks/ Markah) Evaluate the voltage gain, Ay (iv) = V. Nilaikan gandaan voltan, Ay V, (5 Marks/Markah) 3 e

Answer 1

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t Vima V yuty-ya RE where, Ra-Rn R, - .33K 24l K RE Rc =2K Anjwer Gquinlent yid- Motel) Sma ial AC Yo oblan vautoge Gam mRe Vout

Nouo Rib Vin reautux rmpufior jrorfon Now pt base Terua Ri (RlRa) Ri A Vs Vout = (-BRe)( fom e .attp)RE Vour - loo x 2 Av Ialth8 Av 0.984 Answer