Q.1. A power suppply having 220 V AC input and two fixed outputs as 10 V DC and 20 V DC is requested from you. For this

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Q 1 A Power Suppply Having 220 V Ac Input And Two Fixed Outputs As 10 V Dc And 20 V Dc Is Requested From You For This 1 (313.78 KiB) Viewed 27 times

Q.1. A power suppply having 220 V AC input and two fixed outputs as 10 V DC and 20 V DC is requested from you. For this purpose, a transformer with 220 V AC input / 15 V AC output, some capacitors, some silicon diodes, and zener diodes are presented. a) Design your power supply and point out DC voltage outputs (20p.), b) Explain the operation of the network and all the components used in the design (5p.). c) Calculate and plot input and output signals of the network (10p.). Hint: For design, remember clipper, clamper, rectifier, voltage multiplier and zener circuits Q.2. Drain characteristics of a FET device is given as in the Figure-1; a) Define the type of the possible FET device having this characteristics (3p.), b) Calculate and sketch the transfer characteristics by by using Shockley's equation and the characteristic curves given in Figure-1 (10p.), c) Which values can be possible for cut-off VGs and saturation Vos extracted from the drain characteristics (2p.), d) Design and plot a proper fixed biasing circuit from your calculations above and use the required DC values obtained from the network output of Q.1 (5p.), e) Explain the tasks of all the components used in the design (5p.), f) Calculate all the required peripheral components values in your design by taking account the saturation level of Vps at VGs= +6 V and and choosing operating region values in drain characteristic curves (15p.). g) Calculate and plot a loadline for the curent network (5p.), h) Find Q point and point out Ipo and VGs, values close to Q point (5p.) 1 (MA) tl (MA) 10 Vase +9V 1 10 9 9 00 8 1 V7V 1 5 - VV 4 1 3 Vasets V 2 1 VoV Versey Vas2v 0 1 2 3 4 5 6 7 8 9 10 15 20 25 Vos(V)