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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.
HILDA ( Output) It is called hold acknowledge signals it is active high i e it goes high when microprocessor receives HOLD signal.
In second technique, a concentrator expander (CE) is used near cluster of users and another one at exchange end as demonstrated in figure. Only a few junction lines are run between
Consider an RLC series circuit excited by v(t) = V m cos ωt in the time domain. By using superposition, solve for the time-domain forced response of the resultant current through
Q. A balanced delta-connected load with a per-phase impedance of 30+j10 is connected in parallel with a balanced wye-connected load with a per phase impedance of 40-j10 . This l
History - Field-Effect Transistor: The principle of field-effect transistors was very first patented by Julius Edgar Lilienfeld in the year 1925 and by Oskar Heil in the year
short circuit protection
Q. Find the output function Y for the logic circuits of Figure (a) and (b). An AOI (AND-OR-INVERT) gate is shown in Figure with its two possible realizations. Obtain the output
a. Determine the power flow diagram for a DC generator. b. A shunt wound DC generator delivers 496 A at 440 V to a load. The resistance of the shunt field coil is 110? and that
Clipper Circuits: Clipper circuit have ability to Clipper of portions of the input signals without distorting the remaining part of the alternating wave form. Clamper net
Explain Hall effect. Consider a slab of material wherein there is a current density J resulting by an applied electric field Ex in the x- direction. The electrons will drift al
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