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Q. Explain common collector configuration?
It is called the common-collector configuration because (ignoring the power supply battery) both the signal source and the load share the collector lead as a common connection point:
Since the emitter lead of a transistor is the one handling the most current (the sum of base and collector currents, since base and collector currents always mesh together to form the emitter current), it would be reasonable to presume that this amplifier will have a very large current gain .the current gain for a common-collector amplifier is quite large, larger than any other transistor amplifier configuration.
conditions where the transistor is conducting. Cutoff occurs at input voltages below 0.7 volts, and saturation at input voltages in excess of battery (supply) voltage plus 0.7 volts. Because of this behavior, the common-collector amplifier circuit is also known as the voltage-follower or emitter-follower amplifier. This amplifier configuration has a voltage gain of slightly less than 1In the common-collector configuration, though, the load is situated in series with the emitter, and thus its current is equal to the emitter current. With the emitter carrying collector current and base current, the load in this type of amplifier has all the current of the collector running through it plus the input current of the base. This yields a current gain of ? plus 1:
Explain Stator of a Synchronous Machine? The stator of a synchronous machine is made of thin laminations of highly permeable (silicon) steel in order to reduce the core losses.
Q. Illustrate BCD-to-decimal decoding with a 4-to- 16 decoder, and draw the corresponding truth table.
Binary Coded Decimal to Decimal Conversions • Step1. Break up the Binary Coded Decimal number into 4 bit binary number, starting from the least significant binary bit. • Step2
Q. What is Open-loop voltage gain? The op amp amplifies the difference vd between the voltage on the noninverting (+) terminal and the inverting (-) terminal; see Figure. The t
Q. Show polarity markings for a single-phase transformer for (a) subtractive polarity, and (b) additive polarity.
8 bit data to memory This form of the instruction is used to copy 8 bit data directly to the memory location pointed by register pair HL. The instruction format is
Determine a normalized frequency at 820nm for a step index fibre having 25µm core radius. Given n 1 =1.48 and n 2 =1.46.Also calculate how several modes propagate within this fibre
Equal volumes of all gases contain the samenumber of molecules when the volumes are measured at the same p and T. Therefore for a given volume at the same p and T, with the same
Q. A sectional view of a cylindrical iron-clad plunger magnet is shown in figure. The small air gap between the sides of the plunger and the iron shell is uniform and 0.25 mm long.
A data hold is to be constructed that reconstructs the sampled signal by the straight-line approximation shown in Figure. Note that this device is a polygonal data hold with a dela
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