* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Lecture-2 - Dr. Imtiaz Hussain
Variable-frequency drive wikipedia , lookup
Ground loop (electricity) wikipedia , lookup
Electronic engineering wikipedia , lookup
Power inverter wikipedia , lookup
Spectral density wikipedia , lookup
Buck converter wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Immunity-aware programming wikipedia , lookup
Schmitt trigger wikipedia , lookup
Stray voltage wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Analog-to-digital converter wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Surge protector wikipedia , lookup
Alternating current wikipedia , lookup
Voltage optimisation wikipedia , lookup
Voltage regulator wikipedia , lookup
Power electronics wikipedia , lookup
Rectiverter wikipedia , lookup
Mains electricity wikipedia , lookup
Electronic workshop Lecture-2 Oscilloscope and Function Generators Dr. Imtiaz Hussain email: [email protected] URL :http://imtiazhussainkalwar.weebly.com/ Outline – Introduction – Function Generator • Waveforms • Frequency and Amplitude Setting • DC Level – Oscilloscope Introduction • Electronic circuits need to be tested for their functionality. • This is done by applying test signals as input to the circuits and observing their response. • This requires a device which generates test signals and another device for observing the circuit response to those test signals. Introduction Function Generator • A Function Generator is a device that is used to generate test signals for testing electronic circuits. • All function generators can generate three basic types of waveforms – Sinusoidal – Triangular – Rectangular Function Generator • We can control the amplitude and frequency of generated waveforms. Function Generator • We can also control the DC level of generated waveforms. Function Generator Function Generator Probes Oscilloscope • The oscilloscope is basically a graph-displaying device • It draws a graph of an electrical signal. • In most applications the graph shows how signals change over time: – the vertical (Y) axis represents voltage – the horizontal (X) axis represents time. Example Electrical Signal Y=VOLTAGE (volts) 5 2.5 -2.5 5 10 15 20 X=TIME (seconds) -5 • Above, this sine wave represents a voltage that is changing over time • So at time=2.5s, what is the voltage? – And again at 10seconds?...15 seconds? • We can see that as time moves forward, the voltage is changing – Is this an AC or DC voltage? What does that mean? What are the major components? • Display Screen – Displays an input signal with respect to time. • Control Panel – Adjusts how the input signal is displayed. What is the purpose of an oscilloscope • The purpose of an oscilloscope is to measure a voltage that changes with time and show it in a graphical format 1) Here is the oscilloscope in our lab -Notice the X-Y axes 2) Here is our alternating voltage signal from before 3) If we measure our signal with the scope, it would look like this! Oscilloscope Screen • Notice that the screen has ruled divisions both horizontally and vertically. • The major divisions are marked off in centimeters, the middle lines also have minor divisions every 0.2 of a centimeter. Oscilloscope Probes Oscilloscope Problem • Using the function generator, create a wave with the following output: – – – – 3 kHz Frequency Sinusoidal Shape 2 Volt Amplitude D.C Offset 0 • Adjust the output so that only 2 complete cycles are showing. • When are you finished, call your tutor to inspect it. To download this lecture visit http://imtiazhussainkalwar.weebly.com/ END OF LECTURE-2