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What is meant by doping?
Doping: Semiconductors in its extremely pure form are termed as intrinsic semiconductor such intrinsic semiconductor to which several suitable impurities is added in extremely small amount are termed as extrinsic semiconductor. That process is termed as doping and impurities are as termed as doping agent. Generally the doping agents are pentavalent atom as arsenic, antimony or trivalent atom as indium, gallium and aluminium.
Q. Due to what special property does an emitter amplifier work as a buffer amplifier? The circuit design of the emitter follower is such that it has a high input impedance and
With the development of cheap and reliable operational amplifiers the need to design amplifier circuits has disappeared. However it is still necessary to utilise these devices in a
A three-phase, four-pole, 220-V, 60-Hz induction machine with a per-phase resistance of 0.5 is operating at rated voltage as a generator at a slip of -0.04, delivering 12 A of li
Find the current flow through resistor 12 Ω using Thevenin's Theorem.
Explain the 16-bit registers DPTR and SP of 8051. DPTR: DPTR stands for data pointer. DPTR having of a high byte (DPH) and a low byte (DPL). Its function is to hold a 16-b
Consider the common-emitter BJT circuit shown in Figure (a). The static characteristics of the npn silicon BJT are given in Figure (b) along with the load line. Calculate iB for v
Metering Techniques The techniques of metering could be categorized depending upon the voltage at which consumers are fed as: 1. LT (Low Tension) Metering, and 2. HT (Hi
Q. Explain the frequency response curve of a RC coupled amplifier The frequency response curve of a typical RC coupled Amplifier is shown below: In mid frequency range
Q. How does current flow through the channel of a JFET after pinch off? It is seen that above the pinch off voltage at a constant value of VDS (saturation drain current, ID inc
Explain junction transistors (npn and pnp). Junction Transistor: This transistor consists of two p-n junctions combined in one crystal as demonstrated in figure below.
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