Amplifiers
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
seminar surveyer
Active In SP
**

Posts: 3,541
Joined: Sep 2010
#1
23-12-2010, 11:47 AM




.ppt   (2)Amplifier.ppt (Size: 1.65 MB / Downloads: 68)


Function of Amplifiers
Amplifiers provides
GAIN
Filtering, Signal processing, Correction for Nonlinearities
Ideal OP Amps
Transfer Function = Output / Input
Voltage Amp TF (Gain):

Usually Av  1
OP Amp is preferred
Easy to use in circuit designed compared to discrete Transistor circuits
Ideal OP Amps (Cont.)
Assumptions
Open loop Gain = Infinity
Input Impedance Rd = Infinity
Output Impedance Ro = 0
Bandwidth = Infinity
Infinite Frequency Response
vo=0 when v1 = v2
No Offset Voltage
Ideal OP Amps (Cont.)
Note
v0 = A(v2 – v1)
If v0 = , A =  (Typically 100,000)
Then v2 – v1 = 0  v2 = v1
Since v2 = v1 and Rd = 
We can neglect the current in Rd
Rule 1
When the OP Amp is in linear range the two inputs are at the same voltage
Rule 2
No Current flows into either terminal of the OP Amp
Basic OP Amp Circuit Blocks
Inverting Amplifier
Noninverting Amplifier
Unity-Gain Amplifier
Differential Amplifier
Instrumental Amplifier
The Electrocardiogram Amplifier
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  Magnetic Amplifiers computer science crazy 6 6,487 10-01-2013, 12:22 PM
Last Post: seminar tips
  TWO STAGE RCCOUPLED AMPLIFIERS seminar tips 0 405 04-01-2013, 04:39 PM
Last Post: seminar tips
  Raman Amplifiers for Telecommunications ppt seminar flower 0 501 05-09-2012, 04:31 PM
Last Post: seminar flower
  HEADPHONE AMPLIFIERS seminar class 0 864 18-02-2011, 11:41 AM
Last Post: seminar class
  Common-Emitter Amplifiers seminar class 0 2,037 16-02-2011, 09:44 AM
Last Post: seminar class
  Class D audio amplifiers in mobile applications seminar class 0 1,682 14-02-2011, 04:28 PM
Last Post: seminar class
  MICROWAVE AMPLIFIERS ppt. seminar surveyer 0 3,141 07-01-2011, 02:01 PM
Last Post: seminar surveyer
  CMRR ENHANCEMENT TECHNIQUES FOR CURRENT-MODE INSTRUMENTATION AMPLIFIERS computer science crazy 0 2,649 16-09-2009, 11:56 PM
Last Post: computer science crazy
  Class-D Amplifiers computer science crazy 0 699 03-09-2009, 04:22 PM
Last Post: computer science crazy
Music Class-D Amplifiers Computer Science Clay 0 901 01-03-2009, 01:55 PM
Last Post: Computer Science Clay