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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. A three-phase balanced load draws 100 kW at 0.8 power factor lagging. In order to improve the supply power factor to 0.95 leading, a synchronous motor drawing 50 kWis connected
Commercial Losses in Electrical Systems Commercial losses are caused by pilferage, theft, defective meters, and errors in meter reading and in estimating un-metered supply of
Compare with Register The contents of the register are compared with the contents of the accumulator here register may be any one of the A, B, C, D E, H, or L reg
What is the effect of overheating on the life of an electric insulator? An insulator is designed to withstand amount of heat. However, when an insulator is overheated so dielec
Ask question #Minimum 100 wThe voltage v across a capacitor at time t seconds is given by the following table. Use the principle of least squares to fit a curve of the form v = ae
Q. Explain Thevenin and norton equivalent circuits? For a linear portion of a circuit consisting of ideal sources and linear resistors, the volt-ampere (v-i) relationship at an
What is the use of stepper motor? A stepper motor is a device used to get an accurate position control of rotating shafts. A stepper motor employs rotation of its shaft in term
Q. Compare RC coupled and Transformer coupling?
Objective: To Understand the Usage of the Output ports of PIC18F452 and make changes in the previous code accordingly. Procedure: 1. Open the p1.asm program from t
Determine the voltage transfer function of the high-pass filter circuit shown in Figure, and find the expression for ω 0 .
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