Download Feedback Amplifiers Department of EE PowerPoint Presentation

Iframe embed code :

Unable to generate embed code for this presentation.request for embed code @ mail[at]slidesfinder.com

Presentation url :

Home / Science & Technology / Science & Technology Presentations / Feedback Amplifiers Department of EE PowerPoint Presentation

Feedback Amplifiers Department of EE PowerPoint Presentation

PowerPoint is the world's most popular presentation software which can let you create professional Feedback Amplifiers Department of EE powerpoint presentation easily and in no time. This helps you give your presentation on Feedback Amplifiers Department of EE in a conference, a school lecture, a business proposal, in a webinar and business and professional representations.

The uploader spent his/her valuable time to create this Feedback Amplifiers Department of EE powerpoint presentation slides, to share his/her useful content with the world. This ppt presentation uploaded by worldwideweb in Science & Technology ppt presentation category is available for free download,and can be used according to your industries like finance, marketing, education, health and many more.

About This Presentation

worldwideweb

Description : PowerPoint presentation on Feedback Amplifiers Department of EE , download now ppt of Feedback Amplifiers Department of EE

Tags : Feedback Amplifiers Department of EE

Published on : Jan 08, 2015
Views : 1831 | Downloads : 0

Download Now

Share on Social Media

Slide 1 -

Ref:080130HKN EE3110 Feedback Amplifiers 1 Lecture 2 Feedback Amplifier Introduction of Two-Port Network Negative Feedback (Uni-lateral Case) Feedback Topology Analysis of feedback applications Close-Loop Gain Input/Output resistances

Slide 2 -

Ref:080130HKN EE3110 Feedback Amplifiers 2 Two-Port Network (z-parameters) (Open-Circuit Impedance)

Slide 3 -

Ref:080130HKN EE3110 Feedback Amplifiers 3 Two-Port Network (y-parameters) (Short-Circuit Admittance) Short-circuit input admittance At port 1 Short-circuit reverse transadmittance At port 2 Short-circuit forward transadmittance Short-circuit output admittance

Slide 4 -

Ref:080130HKN EE3110 Feedback Amplifiers 4 Two-Port Network (h-parameters) (hybrid) Short-circuit input impedance At port 1 Open-circuit reverse voltage gain At port 2 Short-circuit forward current gain Open-circuit output admittance

Slide 5 -

Ref:080130HKN EE3110 Feedback Amplifiers 5 Two-Port Network (g-parameters) (inverse-hybrid) Open-circuit input admittance At port 1 Short-circuit reverse current gain At port 2 Open-circuit forward current gain Short-circuit output impedance

Slide 6 -

Ref:080130HKN EE3110 Feedback Amplifiers 6 z-parameter example Note: (1) z-matrix in the last circuit = sum of two former z-matrices (2) z-parameters is normally used in analysis of series-series circuits (3) Z12 = Z21 (reciprocal circuit) (4) Z12 = Z21 and Z11 = Z22 (symmetrical and reciprocal circuit)

Slide 7 -

Ref:080130HKN EE3110 Feedback Amplifiers 7 y-parameter example

Slide 8 -

Ref:080130HKN EE3110 Feedback Amplifiers 8 y-parameter example (Cont’)

Slide 9 -

Ref:080130HKN EE3110 Feedback Amplifiers 9 General Feedback Structure A : Open Loop Gain A = Vo / V  : feedback factor  = Vf / Vo

Slide 10 -

Ref:080130HKN EE3110 Feedback Amplifiers 10 Negative Feedback Properties Negative feedback takes a sample of the output signal and applies it to the input to get several desirable properties. In amplifiers, negative feedback can be applied to get the following properties Desensitized gain : gain less sensitive to circuit component variations Reduce nonlinear distortion : output proportional to input (constant gain independent of signal level) Reduce effect of noise Control input and output impedances by applying appropriate feedback topologies Extend bandwidth of amplifier All of these properties can be achieved by trading off gain

Slide 11 -

Ref:080130HKN EE3110 Feedback Amplifiers 11 Gain De-sensitivity Feedback can be used to desensitize the closed-loop gain to variations in the basic amplifiler. Assume  is constant. Take differentials of the closed loop gain equation gives, Divided by Av, the close loop gain sensitivity is equal to, This result shows the effects of variations in A on ACL is mitigated by the feedback amount. (1+A) is also called the desensitivity amount. Differential respected with A

Slide 12 -

Ref:080130HKN EE3110 Feedback Amplifiers 12 Basic Feedback Topologies Depending on the input signal (voltage or current) to be amplified and form of the output (voltage or current), amplifiers can be classified into four categories. Depending on the amplifier category, one of four types of feedback structures should be used. (Type of Feedback) (Type of Sensing) (1) Series (Voltage) Shunt (Voltage) (2) Series (Voltage) Series (Current) (3) Shunt (Current) Shunt (Voltage) (4) Shunt (Current) Series (Current)

Slide 13 -

Ref:080130HKN EE3110 Feedback Amplifiers 13 Feedback Structure (Series-Shunt) Voltage amplifier voltage-controlled voltage source Requires high input impedance, low output impedance Voltage-voltage feedback Voltage Gain Calculation:

Slide 14 -

Ref:080130HKN EE3110 Feedback Amplifiers 14 Input/Output Resistance (Series-Shunt) Input Resistance: Output Resistance (Closed loop output resistance with zero input voltage)

Slide 15 -

Ref:080130HKN EE3110 Feedback Amplifiers 15 h-parameter Modeling

Slide 16 -

Ref:080130HKN EE3110 Feedback Amplifiers 16 Uni-lateral

Slide 17 -

Ref:080130HKN EE3110 Feedback Amplifiers 17 Series-Shunt Example Equivalent circuit It is observed that: Series connection in input ports Shunt connection in output ports  Series-Shunt connection h-parameter should be used.

Slide 18 -

Ref:080130HKN EE3110 Feedback Amplifiers 18 h-parameter analysis 1

Slide 19 -

Ref:080130HKN EE3110 Feedback Amplifiers 19

Slide 20 -

Ref:080130HKN EE3110 Feedback Amplifiers 20 Feedback Structure (Series-Series)

Slide 21 -

Ref:080130HKN EE3110 Feedback Amplifiers 21 Input/Output Resistance (Series-Series) Input Resistance: Output Resistance (Closed loop output resistance with zero input voltage)

Slide 22 -

Ref:080130HKN EE3110 Feedback Amplifiers 22 Series-Series Example CE amplifier with an un-bypassed emitter ac small signal equivalent circuit

Slide 23 -

Ref:080130HKN EE3110 Feedback Amplifiers 23 Feedback Network with z-parameter Reduce equivalent circuit

Slide 24 -

Ref:080130HKN EE3110 Feedback Amplifiers 24 Close loop analysis

Slide 25 -

Ref:080130HKN EE3110 Feedback Amplifiers 25 Final Rin and Rout

Slide 26 -

Ref:080130HKN EE3110 Feedback Amplifiers 26 Feedback Structure (Shunt-Shunt)

Slide 27 -

Ref:080130HKN EE3110 Feedback Amplifiers 27 Input/Output Resistance (Shunt-Shunt) Input Resistance: Output Resistance (Closed loop output resistance with zero input voltage)

Slide 28 -

Ref:080130HKN EE3110 Feedback Amplifiers 28 Shunt-Shunt Example CE amplifier ac small signal equivalent circuit Shunt-Shunt connection found!  y-parameter

Slide 29 -

Ref:080130HKN EE3110 Feedback Amplifiers 29 Feedback Network y-parameter modeling

Slide 30 -

Ref:080130HKN EE3110 Feedback Amplifiers 30

Slide 31 -

Ref:080130HKN EE3110 Feedback Amplifiers 31 Feedback Structure (Shunt-Series)

Slide 32 -

Ref:080130HKN EE3110 Feedback Amplifiers 32 Input/Output Resistance (Shunt-Series) Input Resistance: Output Resistance (Closed loop output resistance with zero input voltage)

Slide 33 -

Ref:080130HKN EE3110 Feedback Amplifiers 33 Summary

Slide 34 -

Ref:080130HKN EE3110 Feedback Amplifiers 34 Supplementary Find the input and output resistance from - Two port network, and - Circuit theory

Slide 35 -

Ref:080130HKN EE3110 Feedback Amplifiers 35 Circuit Theory

Slide 36 -

Ref:080130HKN EE3110 Feedback Amplifiers 36 Two Port Network 

Slide 37 -

Ref:080130HKN EE3110 Feedback Amplifiers 37

Frequently Asked Questions

> About SlidesFinder?

Slidesfinder is a website that allows users to upload and share their PowerPoint presentations online. It provides a platform for individuals and businesses to share their ideas and knowledge through presentations, and for others to view and download these presentations for educational or professional purposes.
Slidesfinder offers a wide range of presentation topics and categories, including business, education, science, technology, health, and more. Users can also search for presentations using keywords, tags, or by category. The website provides tools to create professional presentations with rich media, animations, and graphics.

One of the key features of Slidesfinder is its user-friendly interface, which allows users to easily upload, view, and share presentations. Users can also embed their presentations in their websites or blogs using the website's embed code feature.
Slidesfinder also offers premium services, such as the ability to create private presentations and to download presentations in high-quality formats. However, the basic features of Slidesfinder are free to use, making it accessible to anyone who wants to share their ideas and knowledge through presentations.

> How do I register with SlidesFinder?

Go to registration page (you can see signup link on top of website page) https://www.slidesfinder.com/signup . If you have facebook/gmail account them just click on SIGN IN WITH FACEBOOK OR SIGN IN WITH GOOGLE button, by this you will be a registered member of slidesfinder without filling any form, required detail automatically will be fatch from your account. If you do not a Facebook account, then click on "Signup". Fill all required fields and you will be a registered member of slidesfinder.

> Is slidesfinder account confirmation is mandatory?

Yes it is mandetory to active your account to login.

> Do I need to signup/login on SlidesFinder before uploading a PowerPoint presentation?

Yes, you need to login with your account before uploading presentation. Your username will be displayed on your uploaded presentation. Your registered email id is needed for sending your stats of uploaded presentation.

Slidesfinder is a sharing website for PowerPoint presentations search and share. Find your interest in the form of powerpoint presentations on slidesfinder and save your valuable time . On Slidesfinder you get presentations from our huge library of professional ppt presentations. We believe in making your search INFORMATIVE and FUN. Find your best ppt presentation from a pool of PowerPoint presentations stacked under important industry categories like business & management, heath & Wellness,eduction & training etc. We provide unique informative PowerPoint presentation for marketers, presenters and educationists. These professional PowerPoint presentations are uploaded by professionals from across numerous industry segments.These ppt presentations are available for FREE download.

Not just finding your interest, but facilitate you broadcast your interest. We have created this platform for easy sharing of PowerPoint presentations, ensuring that these presentations get maximum exposure. Create your slidesfinder account and upload PowerPoint presentations for free, share on social media platforms and BUILD YOUR CROWD WITH PRESENTATION !!

The Great Buddha says, "Share your knowledge.It’s a way to achieve immortality"! So, start sharing knowledge and we are here to make that immortal !!

Re-productivity of content are not allowed. Without prior written permission from author, commercial use of any content is illegal.