The NPN transistors of the circuit have ?=100, VBEon=0.7V and VCEsat=0.2V. The inputs of the circuit...
0.7V, and Va 100V. Find: -For the operational amplifier of Figure 4 assume all transistors have β-100, Find the de emitter currents and the de collector voltage of all transistors. The de voltage at the inputs is OV and the de output voltage is held at 0V (by negative feedback, not shown). Neglect the de base currents for this part. Find the (differential) voltage gain of the amplifier with R-10 k2. Assume the impedance of the capacitor is very large....
0.7V, and Va 100V. Find: -For the operational amplifier of Figure 4 assume all transistors have β-100, Find the de emitter currents and the de collector voltage of all transistors. The de voltage at the inputs is OV and the de output voltage is held at 0V (by negative feedback, not shown). Neglect the de base currents for this part. Find the (differential) voltage gain of the amplifier with R-10 k2. Assume the impedance of the capacitor is very large....
2) Consider the circuit below. Assume B=49 A/A, VBe=0.7V, VCEsat=0.2V. If the Collector current is Ic = 9.8 mA, Find Vc, VE, VB and VBB; as well as the currents IE and IB. Hint: VBB>0. Verify your assumption. 15V V BB ic 3 Rc CS 30622 AVC RB 10k 2 B E → VE ięRE ES 33012
The circuit below is a common collector (CC) circuit.
Assuming VBEON VA, and ß - 100, , VCE.SAT 0.2V, VA 00 Calculate the transistor operating point. a. 1 b. Find the small signal voltage gain, 。 Find the driving point input resistance. c. d. If the input is a sinewave, find the maximum output voltage amplitude before clıpping sets in. B1 CO Q1 RE v,RB2
Assuming VBEON VA, and ß - 100, , VCE.SAT 0.2V, VA 00 Calculate the transistor...
RE -3.3k2 Figure 5. Vbe-0.7V (active), Vce 0.2V (saturation), p-100 For the circuit shown in Figure 5: a) If V oV DC, find the DC bias point for Q1? b) Draw the small signal equivalent circuit and evaluate the small signal AC voltage gain. c) Sketch le vs Vce and show the operating point for the transistor. d) How would you change the bias to obtain maximum signal swing?
2. In the following current mirror circuit, Vcc -10V, and the three transistors, Q1, Q2, Q3, have the same saturation current (i.e.,IssIs), and with V for active mode is 0.7V. Then, the three beta values are given by: β91-100, ßQ2-50, and ßQ3-200. The thermal voltage is ντ-25mV. Assuming that you need an output current of i1mA: ref db (a) Find the collector, base, and emitter current for all three Q1 O2 transistors when ia 1mA. (b) Find the refern ie....
QUESTION 2: (20 MARKS) +5 V X2 71 QA X2 ×10 5 V Figure Q2.1 The circuit shown in Figure Q2.1, is a multistage amplifier with a differential input stage It uses a folded cascode involving transistor Q3. Note that transistor Q5 operates in class B mode and is off at the quiescent point, while Q4 is ON at the quiescent point with QD sinking its bias current. All transistors have Vad-0.7V, VA-200 V, and β-100 a) Perform a dc...
Question 3. Unregulated supply Rz IL Vin IR Ib (a) The circuit on the right shows a series regulator connected to the output of an unregulated power supply. The transistor has B =50, and a 6 volt Zener diode is used. When the load current, Il, is 1 amp the de input voltage from the unregulated supply, Vin, is 11 volt, VBE = 1 volt and the Zener diode current, Iz, is 20 mA. For these conditions, calculate Iz (i)...