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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.
Q. Consider the toroid shown in figure made up of three ferromagnetic materials. Material a is nickel-iron alloy having a mean arc length la of 0.6 m; material b is medium silicon
Q. Describe Pulse dialling? Pulse dialling: 1. Generated through make and break contact. 2. DC Current pulse is generated. 3. Each number is separated by a short
Determine the Type of the Semiconductor An unknown semiconductor has E g =1.1 eV and N t =N v . lt is doped with 10 16 /cm 3 donor atoms. - (a) Determine the type of the s
You will manufacture composite beams using an epoxy matrix (West Systems 105 epoxy resin + West Systems 206 slow hardener) and one of the following reinforcements: 1. Unidirec
You are the new chief PCB designer for a small company who are about to become heavily involved in the design and realisation of digital timing products. Your management wants to p
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Q. A60-Hz, 100-kVA, 2400/240-V(rms) transformer is used as a step-down transformer from a transmission line to a distribution system. Consider the transformer to be ideal. (a) F
Q. A six-pole, double-layer dc armature winding in 28 slots has five turns per coil. If the field flux is 0.025 Wb per pole and the speed of the rotor is 1200 r/min, find the value
The superposition theorem states: 'In any network made up of linear resistances and having more than single source of e.m.f, the resultant current flowing in any branch is the
i have assignment about wien bridge oscillator i need help to how to degsin the circuit using ltpsic
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