Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 99 views

    Log and Antilog Amplifier PDF

    Uploaded by

    juhi993
    This document provides an overview of log and antilog amplifiers, which are nonlinear circuits that output a voltage proportional to the logarithm or exponent of the input voltage. It discusses two basic circuit types - the transdiode and diode-connected transistor - and describes applications such as multiplication, division, powers, roots, compression, and decompression. The document also reviews exponential amplifiers, log-antilog circuits, basic multiplier circuits, and four-quadrant multipliers.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd

    Log and Antilog Amplifier PDF

    Uploaded by

    juhi993
    99 views24 pages
    This document provides an overview of log and antilog amplifiers, which are nonlinear circuits that output a voltage proportional to the logarithm or exponent of the input voltage. It discusses two basic circuit types - the transdiode and diode-connected transistor - and describes applications such as multiplication, division, powers, roots, compression, and decompression. The document also reviews exponential amplifiers, log-antilog circuits, basic multiplier circuits, and four-quadrant multipliers.

    Original Description:

    fghfgh

    Original Title

    log_and_antilog_amplifier.pdf

    Copyright

    © Attribution Non-Commercial (BY-NC)

    Available Formats

    PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    This document provides an overview of log and antilog amplifiers, which are nonlinear circuits that output a voltage proportional to the logarithm or exponent of the input voltage. It discusses two basic circuit types - the transdiode and diode-connected transistor - and describes applications such as multiplication, division, powers, roots, compression, and decompression. The document also reviews exponential amplifiers, log-antilog circuits, basic multiplier circuits, and four-quadrant multipliers.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    99 views24 pages

    Log and Antilog Amplifier PDF

    Uploaded by

    juhi993
    This document provides an overview of log and antilog amplifiers, which are nonlinear circuits that output a voltage proportional to the logarithm or exponent of the input voltage. It discusses two basic circuit types - the transdiode and diode-connected transistor - and describes applications such as multiplication, division, powers, roots, compression, and decompression. The document also reviews exponential amplifiers, log-antilog circuits, basic multiplier circuits, and four-quadrant multipliers.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 24

    LOG AND ANTILOG AMPLIFIER

    Prepared By: Amit Degada

    Introduction
    Log and Antilog Amplifiers are non-linear circuits in which the output voltage is proportional to the logarithm (or exponent) of the input. It is well known that some processes such as multiplication and division, can be performed by addition and subtraction of logs. They have numerous applications in electronics, such as:
    Multiplication and division, Powers and roots Compression and Decompression True RMS detection Process control

    Two basic circuits


    There are two basic circuits for logarithmic amplifiers
    transdiode and diode connected transistor

    Most logarithmic amplifiers are based on the inherent logarithmic relationship between the collector current, Ic, and the base-emitter voltage, vbe, in silicon bipolar transistors.

    Two basic circuits

    Fig: Transdiode Log Amplifier

    Fig: Diode coected Resistor Log Amplifier

    Transdiode Log Amplifier

    Thermal and Frequency stability

    IC Log Amps

    Note: ( FYI: For your Information Only)

    Temprature Compensation

    Temprature Compensation

    Diode-connected Log Amp

    Exponential (Antilog) Amplifiers

    Antilog Amplifier

    Log-Antilog

    Basic Multiplier

    Multiplication Stages

    block diagram of an analog multiplier

    Basic Multiplier Circuitry

    Basic Multiplier Continue

    Four-Quadrant Multipliers

    Multiplier Applications

    Amplitude Modulation & Squaring

    Reference
    1.Book, Op-Amps, Design, Application and Troubleshooting, David L. Terrell, second Edition, Butterworth-Heinemann Publication. 2. Application report, Texas Instruments HANDBOOK OF OPERATIONAL AMPLIFIER APPLICATIONS, Bruce Carter and Thomas R. Brown, October 2001 3. Website: www.electronics.dit.ie

    Thank You

    Instruction for Printing


    Go to Print option from file Menu Select Multiple pages per sheet and give the number of 4 or 6 depends your choice.

    You might also like