Reference no: EM13924526
PURPOSE
1. To build a radio frequency oscillator using 2N3904 transistors, and calculate proper capacitor values to produce the desired frequency.
2. To measure the output frequency range provided by the variable inductor, and then set the oscillator to a frequency of 750 kHz.
3. Calculate the effective inductances of the variable inductor at the two frequency extremes.
INTRODUCTION - Carrier Frequency Oscillator
Modulation is the process of placing information onto a carrier frequency. The carrier is nothing more than a radio-frequency (RF) sine wave whose characteristics are modulated (vibrated at the information frequency) by changing either the amplitude, frequency, or phase so as to attach the information to it. In this experiment, an RF oscillator will be constructed as the first stage of an AM broadcast transmitter.
PARTS
(2) 2N3904 NPN transistors
(1) 50-100uH variable inductor
(2) 15 kohm 1/4 W resistors.
(2) 10 kohm 1/4 W resistors.
(3) 220 ohm 1/4 W resistors
(1) 47 ohm 1/4 W resistor,
(1) 10 μ1F electrolytic capacitor"
(1) 0.1 uF mylar capacitor
(1) 0.01 uF mylar capacitor
Capacitors C1, and C2 are to be calculated by the student.
1. A theory section that describes the purpose and operation of the circuit. This section should include a description of the function of each component in the circuit. This section must also include all equations used to design the circuit, and to obtain the numeric results. Equations should be typed into the report using Microsoft Equation Editor 3.0 found under Insert/Object/Microsoft Equation 3.0. Include comments about special measurement techniques to be used.
2. A data section that includes the results of your design equations, and the measured results of the lab work. If applicable, calculate the percent of experimental error using the following equation:
Percent error = (|Xtheory -Xmeasured|/Xtheory) x 100%
3. The complete schematic of the circuit must be drawn with Orcad/PSpice, EagleCAD, LT Spice or Multisim and include the values of all the parts used. This should be pasted into the lab report.
4. A conclusion section that describes the results of the lab work in complete sentences. Comments like, "I really learned a lot from this lab", or "this lab was really fun" do not belong here. You should discuss whether or not the lab achieved the desired results. Quote actual numbers from your data section to support your conclusion. State possible sources of error, and even suggest ways that the circuit could be improved.
|
List the job title and job description
: List the job title, job description and education/licensure requirements. List the skills needed for the job, taken both from the job description and your own analysis of the job
|
|
Information developed for managers in an organization
: _____ refers to accounting information developed for managers within an organization.
|
|
Primary basis for market opportunities
: Xerox offers a color printer that sells for $1,200, which they want to market to businesses. As the marketing manager for Xerox printers, you want to select an advertising medium that has a long exposure time and that can attract and retain a pros..
|
|
Discuss what the given difference in results implies
: You learn that the Dow Jones Total Stock Market market-value-weighted index increased by 16 percent during a specified period. Discuss what this difference in results implies.
|
|
Build a radio frequency oscillator
: To build a radio frequency oscillator using 2N3904 transistors, and calculate proper capacitor values to produce the desired frequency and to measure the output frequency range provided by the variable inductor, and then set the oscillator to a fr..
|
|
Influencing the financial position of an organization
: Any event that affects the financial position of an organization and requires recording is called a(n)_____. A. account B. accounting change C. posting D. transaction
|
|
Motivation to progress through stages of moral development
: Egocentric punishment avoidance is associated with the preconventional level of moral development.
|
|
Process of entering a global market
: 1. Direct market accession offers a firm low risk, gives them a simple way to initiate the process of entering a global market, and helps the firm meet demands and challenges 2. The term logistics refers to the movement of finished products, semi..
|