Consider an NPN BJT with the following parameters. Beta = 85, Cmu = 1 pF, Co = .5 pF, and Cpi = 6 pF. With IC = 70 mA, r0 = 50 Ohms. RLOAD = 50 Ohms and RSIG = 1K. The available power supply is +12V DC. All coupling caps are 1 uF. Design an amplifier circuit using this transistor with a gain of -50. Calculate the upper and lower 3 dB points of your design. There is a 10% bonus for showing that your circuits works properly in simulation.

In: Electrical Engineering

If you use your office computer 15 hours per week, and do not
unplug it when it is not in use, how much carbon dioxide is
produced from the **vampire energy** used by the
office computer in **one year** ? help
(energyvampires)

Express your answer rounded to the nearest tenth of a pound of
carbon dioxide.

lb of CO2

Stand-by Power Consumption by Type of Appliance

Appliance Category | Appliance | Average Power Consumption in Watts |
---|---|---|

Audio | Portable Stereo | 1.66 |

DVD Player | 1.55 | |

Clock Radio | 2.00 | |

Office | Computer | 2.84 |

Printer, Ink Jet | 1.26 | |

Copier | 1.49 | |

Phone, Cordless | 2.81 | |

Phone, Cordless with Answering | 2.92 | |

Answering Machine | 2.0 | |

Entertainment | Television | 3.06 |

DVD Player | 1.55 | |

Cable Box with Remote | 17.83 | |

Satellite System | 15.66 | |

Video Game | 1.01 | |

Kitchen | Coffee Maker | 1.14 |

Microwave | 3.08 | |

Home | Air Conditioner | 0.90 |

Heating, Central | 2.84 | |

Security System | 2.70 | |

Garage Door Opener | 4.48 |

In: Electrical Engineering

1)Describe briefly the different types of d.c. distributors.

2. What are the advantages of a doubly fed distributor over singly fed distributor ?

3)What is the purpose of interconnector in a d.c. ring main distributor ?

4)What are the advantages of 3-wire distribution over 2-wire distribution ?

5)8. Explain the use of rotary balancer in a 3-wire d.c. distribution system

6)What is a booster ? With a neat diagram, explain how it can be used on a feeder

In: Electrical Engineering

AC Thevenin has an impedance of Zt = 6 + j75

What is the load impedance for MPT?

If a resistor was connected as load, what would the R value need to be for MPT?

In: Electrical Engineering

2. Design a digital lowpass filter to meet the following
specifications:

passband edge = 0:45π

stopband edge = 0:5π

Rp = 0.5 dB, As = 60 dB

a. Design a Buttterworth filter, you may use the butteworth and butter commands to implement.

b. Design Chebyshev Type 1 filter ( use the equivalent commands to above )

c. Design an Elliptic filter ( use the equivalent commands to part a ).

d. List the order of each filter and find the actual Rp and As
for each filter. To find the ripple

and attenuation values you should use freqz to output the frequency
response h and frequency w

values to a vector at enough points , say 1000, then use the min or
max commands to find the

min or max in the passband or stopband range in the frequency
response. You may need to use

commands to convert to dB.

e. Plot the magnitude response (in dB) for all three filters on
one plot and plot the phase

response for all three filters on another plot ( title the graph,
label axes, and use a legend to

identity the filter )

**Please include Matlab code. EVEN JUST PART A
HELPS**

In: Electrical Engineering

Q2. (i) Design a 2-input 1-output multiplexer, inside a hierarchical block. Explain your design. Name your block with your student number: eg “123456 multiplexer”.

(ii) Test your circuit in block form, showing the truth table from Multisim.

In: Electrical Engineering

A 3-Phase, 60 HZ transmission line has the following parameters:

L= 2.563 x 10^(-3) H/mi

R= 0.25 Ohms/mi

Y= 5 x 10^(3) S/mi

The line is 200 mi long and it delivers 150 MW at 220 kV and unity power factor to a substation at its receiving end.

Find the efficiency and voltage regulation of the transmission line.

In: Electrical Engineering

Design a synchronously settable flip-flop using a regular D flip-flop and additional gates.

In: Electrical Engineering

please let me know reference of this MATLAB code.

please explain this code line by line.

.

.

N=256; %% sampling number

n=linspace(0,1,N);

fs=1/(n(2)-n(1));

x=5*(sin((2*pi*10*n))); %% create signal

N=length(x);

f=[-fs/2:fs/N:fs/2-fs/N];

subplot(211)

plot(f,fftshift(abs(fft(x))));

title('|G(f)|');grid;

xlabel('frequency');

ylabel('|G(f)|');

%Zero padding

xx=[zeros(1,128) x zeros(1,128)];

N=length(xx);

f=[-fs/2:fs/N:fs/2-fs/N];

subplot(212)

plot(f,fftshift(abs(fft(xx))));

title('|Gz(f)|');grid;

xlabel('frequency');

ylabel('|Gz(f)|');

In: Electrical Engineering

**Please, introduce the knowledge of “swarms in autonomous
systems; properties, and advantages.**

In: Electrical Engineering

Please give following terms definitions with the examples with circuit diagrams

PHASE LOCK LOOP

BUCK BOOST

LDO

TX RX SENSITIVITY

TXCVR

TYPES OF FILTERS

BER VS POWER RELATIONS

CHANNEL POWER

POWER DENSITY

I Q DIGITAL ANALOG MODULATIONS

ENVELOPE

TXCO

TARGET AND BINARY SEARCH

SHDN

LNA

VSWR

RSSI

POWER BAND

SENSITIVITY

In: Electrical Engineering

Given: a 315MHz binary message is being ASK modulated with a carrier frequency of 38KHz.

Write a MatLab program to demodulate the signal, and graph the output.

In: Electrical Engineering

For a right-sided system specified by the transfer
function

H(z) = z/(z - 0.5)and an input x[n] = (0.8)n u[n]

find the poles of the response Y[z] and the ROC.

(Hint: Find X(z). H(z) = Y(z)/X(z). Find individual poles’ ROC and
then find the common region of convergence)

In: Electrical Engineering

Consider two different implementations of the same instruction set architecture.

The instructions can be divided into four classes according to their CPI (classes A, B, C, and D).

P1 with a clock rate of 2.5 GHz and CPIs of 1, 2, 3, and 3, and P2 with a clock rate of 3 GHz and CPIs of 2, 2, 2, and 2.

Given a program with a dynamic instruction count of 1.0E6 instructions divided into classes as follows:

10% class A, 20% class B, 50% class C, and 20% class D,

which is faster: P1 or P2?

a. What is the global CPI for each implementation?

b. Find the clock cycles required in both cases.

In: Electrical Engineering

1. Explain briefly the purpose of a power supply of a Bio-medical electronic instrument? What is meant by a stabilized power supply?

2. Briefly describe the salient features of a switching type regulator used in the power supply of medical diagnostic equipment.

3. What are the functions of an input filter in a switching power supply?

In: Electrical Engineering