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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:
How is 8255 (Programmable Peripheral Interface) configured if its control register contains 9B h. Ans. Programmable Peripheral Interface Command Byte B (sets or
1. A 1 μm long and 100 μm 2 cross-sectional area silicon bar is doped with 10 16 /cm 3 phosphorous. Use the graph below to: a. Find the current at 300°K with 10 V applie
What is TPA (transient program area)? The memory system is divided in three major parts: transient program area, System is and XMS that is extended memory system.
Q. The quantum levels of a quantizer are separated by the step size δv = 0.2 V, with the lowest and highest levels of-3.3 V and +3.3 V, respectively. A sequence ofmessage sample
Sparking : In ordinary domestic situations, small electrical sparks are usually not hazardous. In certain conditions which are frequently encountered in science labs, even the sma
In the circuit shown below, the capacitor initially has a voltage across it 4 Volts (at t = 0). a. Write down the expression for V C (t) when the switch is closed. b. Writ
1,Operation of face plate starter 2;Operation of a shaded pole motor 3,3 explained demerits of a rheostat method of starting adc machines
kindly tell me which text book is usefull forlearn the basic electricle.
Effect of Supply Voltage a.As the applied as voltage is increased hysteresis loss increases. b.Eddy current losses are given by W e α f 2 t 2 B 2 m Where B m =
It is uneconomic to provide adequate equipment to carry all the traffic which could possibly be offered to a telecommunication system. In a telephone exchange it's theoretically po
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