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Problem 1. Given a n-p-n bipolar junction transistor, draw the energy band diagrams for (a) thermal equilibrium and (b) active bias cases. Use usual notations to label various energy levels.
2. A silicon n'-p-n bipolar transistor has abrupt dopings of 1019, 3x1016, and 5x105 cm in the emitter, base, and collector, respectively. Find the upper limit of the base-collector voltage at which the emitter bias can no longer control the collector current (due to punch- through or avalanche breakdown). Assume the base width (between metallurgical junc- tions) is 0.5 um.
4. Lab VIII: Experiment VII The Bipolar Junction Transistor (BJT) Characteristics The bipolar junction transistor (BJT) is a three-terminal solid state device widely used as an amplifier (or switching) device. It consists of two n-type materials sandwiched by p-type material (npn) or two p-type and n-type. The terminals (sections) are known as emitter E, base B and collector C. Two currents and two voltages uniquely describe the behavior of the device. The third current/voltage can be determined through KCL/KVL. See...
Explain how the base width of a bipolar transistor is determined in the standard bipolar fabrication process.
Does the arrow of a bipolar junction transistor point toward or opposite the transistor point toward or opposite of the conventional current flow?
In the circuit of the figure, the bipolar transistor has a B =
25 and the MOSFET has a VTN = 2V as well as a conduction parameter
Kn = 1mA / V ^ 2. Determine the value of the input voltage required
for the output voltage Vo = 15V.
+24V Vztav 1k Vi 2k Tuin Figura 4
What are the differences between a (pnp) and a (npn) Bipolar Junction Transistor?
Problem 2. A silicon NPN bipolar transistor has the following specifications: Emitter: N+: ND =1018 cm-3 , base: p-type, NA=1015 cm-3, collector: N-type, ND=5x1015 cm-3 . 1. Draw the energy band diagram of the transistor at thermal equilibrium, 2. If the transistor is biased at Normal Active Mode, emitter-base junction forward biased with 1 V, and collector-base junction is reverse biased with 4V, draw the energy band diagram.
A. As an electronic device, what is the function or purpose of a bipolar junction transistor when it is utilized in an analog circuit? B. Make a sketch of a typical volume element of a silicon pnp transistor connected in active larger than the base current. In your sketch, show the path of carriers (both holes and electrons) as they proceed from the emitter to the collector. Identify the paths of all 3 types of base current and explain what...