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Zeljko Janicijevic

Jun 2014
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  • MSc, University of Luebeck and University of Applied Sciences Luebeck, Luebeck, Germany, 2013
  • BSc, School of Electrical Engineering at the University of Belgrade, Belgrade, Serbia, 2011


  • Engineering

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DC Circuit Properties

See attachment for better symbol representation and diagrams.

1. The diagram of FIGURE 1 represents a meter shunted by a parallel resistance RS.

(a) Determine the required value of the shunt resistance if the maximum value of the current I is 200 A. The meter can read a maximum READ MORE »

Engineering / Electrical Engineering / Electronic Engineering » 587698

DC power supply design

Q1. A 9 V power supply delivers 2 A to a resistive load. The a.c. supply is 230 V, 50 Hz and a bridge rectifier is used in conjunction with a 0. 047 farad reservoir capacitor.
(a) The peak-to-peak ripple voltage.
(b) The transformer secondary voltage if the total forward voltage
drop i READ MORE »

Engineering / Electrical Engineering / Power Engineering » 617159

Human Discharge Through a Resistive Object

FIGURE 1 shows the electrostatic equivalent circuit of a human being. A person is charged to 20 kV and touches an object having a 50 Ω resistance to ground. Determine the following:
(a) the maximum current which will flow in the object
(b) the rise time of the current
(c) the decay time of the READ MORE »

Engineering / Electrical Engineering / Electronic Engineering » 602896

Bipolar junction transistor analysis

Determine the voltage VO in the circuit of FIGURE 1 for:
(a) β = 50, VBE = 0.7 V
(b) β = 250, VBE = 0.7 V.
Comment on the significance of your result.

(Figure 1 attached)

Engineering / Electrical Engineering / Electronic Engineering » 596602

Discrete-Time Signals and Systems

1. Compute the unit-pulse response h[n] for n=0, 1, 2 for the discrete time system

y[n+2] + 1/2y[n+1] + 1/4y[n] = x[n+1] - x[n]

2. Determine if each of the following signals is periodic. If a signal is periodic, what is its period?
x[n] = 3sin(100n)
x[n] = 4cos(1.5πn)

3. For the d READ MORE »

Engineering / Electrical Engineering / Electronic Engineering » 604930
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