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3. Darlington BJT DC biasing Vcc Given: T1+T2 Darlington transistor Vcc= 12 V R= 100 k...
k) Biasing of a BJT transistor is the setting of the collector emitter voltage and the collector current to the desired dc values. These voltages and currents determine the operating point (quiescent point, Q point). The three circuits given in Fig. 6.4 are designed to give the same operating point 12V 12V Rc Rc 12V R1 ?1 Rc R1 ?? Figure 6.4 a. Obtain the expression for VC in terms of the transistor parameters ?, VBE, Ico and the circuit...
Experiment 2: Good biasing Set up the circuit with R2 12 k2, R RE 1 k, and Vcc 15 V 39 k2, Rc = 2 k?. Circuit Analysis: Compute Ic, I, and VCE PSpice Simulation: a) Simulate the circuit with PSpice (bias point details only) and compare values of Ic, IB, VCE, and VBE from PSpice simulations with your analytical calculations. b) Rerun your PSpice simulations for temperatures of 0 and 60°C. Make a table of Ic IB, VCE, and...
What type of transistor amplifier is shown in Fig. 29-19a? 29-3 +Vcc 15 V = 7.5 k R= 1.2 k R, C B= 100 2 = 1.5 k° in 10 mV RE = 360 CE (a) Calculate the following DC quantities in Fig. 29-19a: 29-4 Ves a. b. VE C. d. Vc e. VCE W
What type of transistor amplifier is shown in Fig. 29-19a? 29-3 +Vcc 15 V = 7.5 k R= 1.2 k R, C B= 100 2...
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Ar- Q Sea 100 V, what does the gain become? age at the collector. (b) Replacing the transistor by its T model, da the small-signal equivalent circuit of the a plifier. Analyze the resulting circuit to dete mine the voltage gain t/ 04.81 Consider the CE amplifier circuit of Fig. 4.43(a). It is required to design the circuit (i.e., find values for I and Rc) to meet the following specifications: (a) R,5kn (b) the voltage gain...