Graduate Thesis Or Dissertation
 

Non-saturating amplifier theory

Public Deposited

Downloadable Content

Download PDF
Request Accessible Version
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/sn00b2342

Descriptions

Attribute NameValues
Creator
Abstract
  • The performance of certain high-gain amplifiers, such as those used in null detectors, can be greatly improved by using a nonlinear element in a feedback loop. With the addition of nonlinear feedback, it is possible to obtain an amplifier that can handle a large dynamic range of input signals without saturating or blocking. The desired characteristic of the amplifier is a voltage gain that varies instantaneously and inversely with input signal amplitude. Thus, for small input signals, the voltage gain is maximum and as the input signal amplitude increases, the voltage gain decreases to unity or less. The characteristics of a number of suitable nonlinear elements are investigated and a mathematical function is derived to describe them. The variation in voltage gain of an amplifier with a single nonlinear feedback loop is investigated, both theoretically and experimentally, and the results are in good agreement. Several single-loop nonlinear feedback amplifiers can be connected in cascade to obtain the equivalent of nonlinear elements that are not available. This method is used in an example of an approximation of a logarithmic function.
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Publisher
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi using Capture Perfect 3.0 on a Canon DR-9050C in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
Replaces
Accessibility Feature

Relationships

Parents:

This work has no parents.

In Collection:

Items

Thumbnail Title Date Uploaded Visibility Actions
file details LooneyJamesC1960.pdf 2017-08-22 Public Download