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Q Explain about 'Darlington Amplifier'?
DARLINGTON AMPLIFIER : A CC stage followed by another CC stage has an input resistance of about (b + 1) 2 times the emitter resistance of the second stage. More precisely, using the b transform, it is
If RE1 is removed, the second term is about b2 times RE2. Furthermore, if the collectors are connected together, the result is a Darlington stage, as shown below.
This stage can be viewed as a "Darlington transistor" because it has three terminals and an equivalent b of about b2 . Darlington BJTs can be used in any of the three BJT configurations.
Assume that an abrupt Si p-n junction with area 10-4 cm2 has NA=10 17 /cm 3 and ND=10 17 /cm 3 is working at room temperature. It is given that μ n = 700 cm 2 /v-s, μ P =250 cm
Q. Write and execute a PSpice programto analyze the resistor bridge circuit shown in Figure to solve for the node voltages and the voltage-source current. Then find the voltage acr
Q. Show the Subtraction Method? For this procedure (method), start with a weighted position value greater that the number. If the number is greater than the weighted position f
Q. Advantages and Disadvantages of rc coupled amplifier? Advantages 1. Aids excellent frequency response.The gain is constant over the audio frequency range 2. It has l
Question 1 With the help of energy band diagram differentiate between Insulators, semiconductors and metals Question 2 Explain the operation of RC phase shift oscillator
Name the materials used in case of Fuses . Also give reasons. Fuses : For rewirable fuses, copper-tin and lead-tin alloy is used. For HRC and cartridge fuses silve
What do you mean by Macro? MACRO : A sequence of instructions to that a name is assigned is termed as macro. Macros and subroutines are same. Macros are utilized for short se
Design a DC motor control system to run the 48V DC motor at 40rpm up to max load of the motor. You are responsible for designing the control of a 24V supply along with the speed s
Q. Explain Generating mode of rotating machines? The generating mode has mechanical power input and electric power output. The torque T applied externally to the shaft drives t
Static Rotor Resistance Control Methods This method is used only for slip ring induction motor in SRIM 3- phase variable resistor can be inserted in the rotor circuit and
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