555 Timer and Multivibrators: Questions and Answers
The content covers questions related to the function of comparators in the 555 timer circuit, the role of the discharge transistor, types of multivibrators, 74123 retriggering, pulse width control in one-shot circuits, and more. Explained answers and explanations to questions along with images provided for better understanding.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
SAMPLING AND QUANTISATION Year 12 Engineering Studies -Telecommunications
ANALOGUE AND DIGITAL SIGNALS Analogue Signals constantly changing values (amplitude) Digital Signals Signals fixed values (binary 0 & 1, ternary 0, 1 & 2, quaternary 0,1,2 &3) Sinusoidal Wave Form Square Wave Form
CONVERTING ANALOGUE TO DIGITAL Sydney Temperature-24 Hour 25.0 20.0 Recording temperature over a 24 hour period could be graphed as illustrated. 15.0 This replicates an analogue signal wth temperature readings constantly changing incrementally. 10.0 What was the temperature at 1:40pm? 5.0 0.0 12:00:00 AM 8:00:00 PM 6:00:00 PM 4:00:00 PM 2:00:00 PM 12:00:00 PM 10:00:00 AM 8:00:00 AM 6:00:00 AM 4:00:00 AM 2:00:00 AM 12:00:00 AM
CONVERTING ANALOGUE TO DIGITAL - SAMPLING Sampling measuring at set intervals When we sample we can start to move to a square wave where small changes in between the sampling points are not recorded. By decreasing the sampling rate we reduce the amount of information recorded but loose detail. What was the temperature at 1:40pm?
CONVERTING ANALOGUE TO DIGITAL - QUANTISATION Quantisation is the rounding of recorded values up or down to the nearest digital value. What was the temperature at 1:40pm?
EFFECT OF SAMPLING RATE AND QUANTISATION ON SOUND QUALITY
EFFECT OF SAMPLING RATE AND QUANTISATION ON SOUND QUALITY https://youtu.be/zC5KFnSUPNo
