Problem Ten Design a common collector amplifier that has a low break frequency at 20Hz and...
Perform a simple initial design of an ac coupled common-emitter amplifier with four resistor biasing and emitter by-pass capacitor, to have a voltage gain of about 100, for the following conditions. Justify any approximations used. (Assume Ic=1/300 A) i)Transistor ac common-emitter gain, B, 100 ii) Supply voltage ofV0c-20V iii) Allow 10% Vcc across RE DC collector voltage of 10 V iv) v) DC current in the base bias resistors should be ten times greater than the DC base current. Assume...
QUESTION 8 In a common-collector amplifier, the coupling capacitors reactance at the frequency of operation must be a. equal to the value of Rc b. very high O c. very low od independent of frequency QUESTION 9 An emitter follower (common-collector amplifier) has a voltage gain that is O a much less than one Ob.approximately equals to one O c. greater than one d. typically 100 QUESTION 10 In a common-emitter amplifier, the capacitor from emitter to ground is called...
[1] The circuit diagram on the left below is a common emitter amplifier. It is the full complement of components for this type of amplifier ready for AC analysis. This amplifier will be discussed in lecture prior to the lab exercises. However, with the circuit including only Rc. RE, Ri, and R2 as shown in the figure on the right, proceed with the design for a DC operating point of the common emitter amplifier. The following parameters are given: Vcc...
Figure 4. (a) 1. Design the common-emitter amplifier in Fig. 4(a) with the following specifications: Supply Voltage, Vcc 0-to-Peak Output Swing, V Voltage Gain, A. Input Resistance, R Output Resistance, Ro THD for 5kHz 1 V (0-to-peak) Sine Wave Output Voltage, V Relative Variation of Ic for VBE 0.7t 0.1V Transistor's Current Gain, β 5V 25 1.8kS2 4% 10% 100 Show your design procedure and all your calculations. Your design should be insensitive to B variations. Vcc RB1 Rc 0...
Problem 4. For the following common-emitter (CE) amplifier, assume Vr-25mV, v-0.7v, Voc-12V and β = 120. Neglecting rx and rat a) Design for a low cut-off frequency of 120Hz and determine the mid-band gain Vee b) Design for a high cut-off frequency of 300 KHz (Hint: Remember what we did in the lab?) Raig 70 Kn R Ci 20 Kn R 12 ΚΩ 30 K R Vsig
All questions refer to the "simplified" CE amplifier shown below that has no RE at all, and no Cg. There is also no CL. The bias circuit gives Ic 1.5 mA The transistor has B 120, ro 50 k, Cu 1.5 pF and C 9 pF. You can neglect r. VCC RC 5k C2 +Vo C1 2uF RI R3 Vi- 10k 100 2uF RB 200k a) Find the short-circuit time constants Ti and Ta for capacitors C1and Ca, and find...
6.5 BI C2 Cl sig in 0 Design the bias circuit of the CE amplifier shown to obtain IE= 0.5 mA and Vc= +6 V. Design for a dc voltage at the base of 5 V and a current through RB2 of 50 μΑ. Let Vcc-+15 V, β-100, and VBE 0.7 V. a) Specify the values of RBi, RB2, RE, and Rc b) Also give the values of the BJT small-signal parameters gm, rr , and ro at the bias...
Problem Consider a voltage amplifier having a frequency response of the low-pass STC 1ype with a de gain of 60 dB and a 3-dB frequency of 1000 Hz Find the gain in dB at f- 10 Hz, 10kHz, 100 kHz, and 1 MHz Problem For the circuit shown below first, evalusteand the coresponding comer froquency. Second evalmt and the corresponding comer froquency. At the end caloulate overall transfer function T(w)= and reurite it in the standard fom ( and draw...
f) Figure Qlf) shows the ac equivalent circuit of a common-source amplifier where have a low-frequeney rol-off C assume that Rs is much greater than the impedance of Cs at the frequency of 100 Re is the ac load. The low-frequency roll-off is to be set by the capacitor Cs. Design the amplifier to have a low-frequency roll-off, 100 Hz. You may Rt gs gm Vgs V. Rs Cs Figure QiD f) Figure Qlf) shows the ac equivalent circuit of...
What you want more? BJT Amplifier Design Final Project Requirements: The Final Project consists of designing a cascaded BJT Amplifier, using 2 stages. The first stage will be the Common Emitter (CE) Amplifier, the second stage is the Common Collector (CC) Amplifier, as shown in the general diagram below: CE → cc The design requirements are described here: The overall amplification (voltage gain) Axotal as given to each student (each student has different total voltage gain Atotal value] The input...