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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.
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. Draw and explain a differential circuit A differentiator is a high pass RC circuit having a very small time constant. It is a circuit which gives an output voltage proportio
A certain cellular telephone antenna has an input impedance at f=1.0 GHz modeled by a shunt R-C combination, with R=200Ω and C=2.0pF. Because of manufacturing restrictions, you can
see figure on this link: http://tinypic.com/r/1zodevk/8. A. j400 I1-j1200 I2 (A) B. -j400 I1+j1600 I2 (A) C. j400 I1+j400 I2 (A) D. -j400 I1-j400 I2 (A)
This is basically a simple senior design project where the professors are giving us a limited budget and providing us with an Arduino Board. (We can use rasberry pi, beagle bone, e
Explain the principle of induction applied in electrical machine
Ask question #Minimum 100A light assembly shop, 15 m long, 9 m wide and 3 m up to trusses is to illuminated to a level of 200 lux. The utilization and maintenance factors are resp
Q. What are concentrators? Elucidate how it helps in connecting number of subscribers. Ans: In rural areas, subscribers are usually dispersed. It is both expensive and unn
Evaluate currents in the circuits: Determine currents I 1 and I 2 in the given circuits by applying KVL. Solution We apply KVL for first loop : 10 = 1 I 1 + 1 (
Active-mode NPN transistors in circuits Figure: Structure and use of NPN transistor. Arrow according to schematic. The figure opposite is a schematic presentation
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