Consider the circuit shown in Figure 6.38. The transistor parameters are given in Exercise Ex 6.7. (a) Calculate the average power dissipated in the transistor,
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Microelectronics: Circuit Analysis and Design
- Us 1. For the circuit in Figure 6.58, RE = 2 k, R1 = R2 = 50 k and the transistor parameters are ß = 100, VE B(on) = 0.7 V, and VA = 125 V. (a) Determine the small-signal voltage gain Av = vo/vs. (b) Find the resistances Rib and Ro. (Ans. (a) Av = 0.925, (b) Rib = 4.37 k, Ro = 32.0) 3+1= www Vcc= +5 V Rab 1 RE Cc₂ IR₂ bot Vo R₁ = 500 £2 Figure 6.58 Figure for Exercises TYU 6.11.arrow_forwardIs coupling a consequence of signal absorptions? What is the problem of this?arrow_forwardDefine the region of operation for the JFET of figure 6.57 if VDSmax= 25 V and PDmax= 120 mW.arrow_forward
- Show the equation used, and the tabulated list of points in your script. On graph paper draw the maximum and minimum characteristics for the FET used in figure 6.29, Showing associated calculations in the script, draw the bias line for the source resistance R,on the 4.1 given that: Ipss (maæ) Vese = 14 mA ; Ipss (min) Voso (min) 6 mA. - - 4 V. - -9V GSo (max) Calculate Ve and clearly mark it on the graph. 4,2 4.3 graph. From the information provided by your graph, determine: ) the maximum spread of Ip ; (ii) the maximum and minimum expected values for Vog . Determine the value of the mutual conductance of the FET at the quiescent point from the 4.4 4.5 maximum characteristic curve. Draw the small-signal ac model of the circuit, assuming the capacitor reactances are all neglieible Label all component values, terminals and signals. 4.6 4.7 Conduct a complete ac analysis of the circuit so as to find: (i) input impedance; (ii) output impedance; (iii) current gain; (iv) voltage gain. +15 V…arrow_forwardQuestion 6.27 Trace the transfer and drainage characteristics of an n-channel impoverishment MOSFET with IDSS=12 mA and Vp= -8V for a range of VGS= -Vp to VGS=1V.arrow_forwardFor the circuit shown in figure 4.a.- Find in which Region is each Transistor)b.- Find Δv c.- Find Zin, Zout (Note: justify the answer with calculations)For all transistors in this circuit rd = ∞ ; Vto = 2.9v and K= 1.2 mA/v2 and it works with medium-high frequency signalsarrow_forward
- This is a practice question from Electronics Engineering, double sideband supressed carrier problem.arrow_forwardCompare hybrid model circuit and re model circuits. Which circuit are you going to recommend in solving AC signal amplifier stage. Defend your answerarrow_forwardInstall the circuit in figure 6.3 with values RC=470 Ω , R1=100 kΩ (POT) and RE=380 Ω. What should be done for VCE = 7V?arrow_forward
- 7 The function of a loudspeaker crossover network is to channel frequencies higher than a given crossover frequency, f-, into the high-frequency speaker (tweeter) and frequencies below f. into the low-frequency speaker (woofer). Figure P6.37 shows an approximate equivalent circuit where the amplifier is represented as a voltage source with zero internal resistance and each speaker acts as an 8-2 resistance. If the crossover frequency is chosen to be 1,200 Hz, evaluate C and L. Hint: The break frequency would be a reasonable value to set as the crossover frequency. 10 Vms R1 R2 R1 = R2 = 8 2 wwarrow_forwardSEC. 6.5 CHARACTERISTIC ENTRANCE CURVE 6.5 What is the base current in the circuit in Figure 6.20? 6.6 If the current gain decreases from 200 to 100 in the Figure 6.20, what is the base current? 6.7 If the resistance of 470 kM in Figure 6.20 has a tolerance of ‡5 percent, what is the maximum base current? SEC. 6.6 COLLECTOR CURVES 6.8 A transistor circuit similar to the one in Figure 6.20 has a collector supply voltage of 20 V. a collector resistance of 1.5 k and a collector current of 6 mA. What is the collector-emitter voltage?arrow_forwardQ 6:- a) A certain sinusoidal at a frequency fmHz is used as a modulating signal in both AM and an FM system. When modulated, the peak frequency deviation system is set three times the bandwidth of AM system. The magnitude of those sidebands space at Ffm Hz from carrier in both system are equal. Determine the modulation index and bandwidth of FM and AM system. Find ratio power between power of two side in AM to power in the third side in FMarrow_forward
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