For the emitter follower of Fig. 12.2. let Vcc-10 V, 1-1 00 mA, and R.-100 Ω. If the output volta...
a) What is "power-conversion efficiency' of an output stage? Comparo the class-A and class-B amplifier output stages with rospect to their power-conversion officiencies. b) Assume that an emitter follower 9, is used as a class-A output stago, with the constant current supplied by another transistor 2. (as in Figure Q.4.a). Let Vcc=16V, 1 =100mA, and R=10002. If the output voltage is an 4-V-peak sinusoid, find the power conversion efficiency. VC Figure Q.4.a c) Explain the crossover distortion in a class-B...
8.4 a) b) Please solve Test Your Understanding TYU 8.4 For the common-emitter output stage shown in Figure 8.16(a), let Vcc = 12 V and RL = 1 k12. Assume the transistor Q-point is in the center of the load line. (a) Determine the quiescent power dissipated in the transistor. (b) Assume the sinusoidal output voltage is limited to a 9V peak-to-peak value. Determine (i) the average signal power delivered to the load, (ii) the power conversion efficiency, and (iii)...
It is required to design a class B output stage to deliver an average power of 20 W to an 8-Ω load. The power supply is to be selected such that Vcc is about 5 V greater than the peak output voltage. This avoids transistor saturation and the associated nonlinear distortion, and allows for including short-circuit protection circuitry. (The latter will be discussed in Section 12.6.) Determine the supply voltage required the peak current drawn from each supply, the total...
D 6.17 Design the cascode amplifier of Fig. 6.9(a) to obtain gm'e 1 mA/V and R,,-400 k Ω . Use a 0 ogy for which I'm = 0.5 V. F, = 5 Vjim and k: = 400 μ/A V:. Determine /., lY//.. Ici, , and /. Use identical transistors operated at o 02 V. and design for the maximum possi- ble negative signal swing at the output. What is the value of the minimum permitted output voltage? ) 18-11m technol-...
The 1 mA. V, ls -VE -15 15 V, in the following differential amplifier circuit, Vcc parameters are given as β, 100, VBE# 0.7 V, pr-25 mV, K.-100 V. transistor Rc-10 kΩ For: RE-150 Ω Rc Rc REE-200 kΩ a) What is the input differential resistance, Rid b) What is the overall voltage gain vV? You c) What is input common mode resistance, d) What is the worst case common mode gain that appear across the two input terminals? (4...
A common source amplifier circuit based on a single n-channel MOSFET is shown in Figure 4b. Assume that the transconductance gm-60 mS (equivalent to mA/ V) and drain source resistance, os, is so large it may be neglected. 0) Calculate the open circuit voltage gain Av Yout/ Vis. i) The amplifier has a load of 10 k2. Determine the current gain Va. = 12 V 150k 4k3 Vout Vin 200k GND = 0 V Figure 4b a) State the name...