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Amplifier Circuits:  Logarithmicc Page 2
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Logarithmic Amplifiers:  #-B        C-L       M-R        S-Z

Last Updated on: Monday, October 03, 2011 06:07 PM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
Math Utility Routines -  Microchip Application Note Published 26-Aug-97  (app note added 2/06)
MathCAD functions perform log interpolation -  30-Oct-03 Issue of EDN  MathCAD provides a number of interpolation and curve-fitting functions, so that, given a set of X-Y data points, you can estimate the Y value for any given X coordinate. Unfortunately, these functions work poorly with data that is to be displayed in a nonlinear (logarithmic] manner. Examples of these functions are  Using the built-in "linterp" function, MathCAD estimates and plots the data (Fig.... [Design Idea by James Bach, Delphi Delco Electronics Systems, Kokomo, IN]
Microcontroller drives logarithmic/linear dot/bar 20-LED display -  18-Jan-07 Issue of EDN  Do-it-yourself analog-to-LM3914 display driver offers user programmability.... [Design Idea by Dhananjay V Gadre and Anurag Chugh, Netaji Subhas Institute of Technology, New Delhi, India; Edited by Brad Thompson and Fran Granville]

 

Mixed Signal Algorithm Tests Transducers -  04/24/97 EDN-Design Ideas:....[Design Idea added 2/06] EDN migrating links. This link is not verified.  Google the "title" EDN for new link.
Model fixed-point DSP arithmetic in C -  03/18/99 Issue of EDN  You can run initial high-level simulations of custom numerical algorithms, such as digital filters, using floating-point numbers in an environment such as C or Matlab. Unfortunately, you won't see include fixed-point effects, such as truncation due to limited precision and register overflow, until you use a Hardware Design Language (HDL], such....Page includes several designs.  Scroll to find this one.... [Design Idea by Roger Maher, SSL Ltd, Dublin, Ireland]
Motor Drive Algorithm Saves Space & Cycles -  02/17/94 EDN-Design Ideas  The algorithm embodied in the second subroutine in Listing 1  generates the excitation sequence for most permanent-magnet and hybrid stepper motors.  This subroutine is smaller than subroutines that spring from other algorithms.... [Design Idea by Jose A P Machado da Silva, University of Porto, Porto, Portugal]
Numerical Integration Techniques TC7109 -  Microchip Application Note Published 12-Nov-02  (app note added 2/06)
PIC µC implements CRC-16 algorithm -  02/18/99 Issue of EDN  Detecting errors in serial data can be paramount in completing an embedded-control design. Determining which algorithm to use for detecting serial-communications errors depends on several factors. Ideally, the method should require minimal hardware and little computational power from your processor and still provide high-level protection against undetected data errors. The cyclic redundancy check (CRC]....Page includes several designs.  Scroll to find this one.... [Design Idea by Lon Glastner, Solutions Cubed, Chilo, CA]
Polarization Dependent Loss Measurements of Passive Optical Components -  Aligent App Note  (app note added 04/05/06)
Primer on binary arithmetic rounding -  01/21/99 Issue of EDN  As digital communications and data compression/decompression proliferate, signal-processing functions grow in importance. Whether you’re dealing with hard-wired logic or programmable engines, an understanding of binary-arithmetic rounding is important in getting correct and consistent results. Before we discuss rounding, consider a binary number (Figure 1]....Page includes several designs.  Scroll to find this one.... [Design Idea by Tom Balph, Motorola SPS, Tempe, AZ]
Rapid Prototyping Speeds Development of UMTS W-CDMA Algorithms -  Agilent Application Note  (app note added 6/06)
Routine yields fast-bit reversing for DSP algorithms -  13-Sep-01 Issue of EDN  If you need efficient real-time performance in DSP applications, you need an efficient bit-reversing routine. For several FFT programs, data permutation can take 10 to 50% of the computation time, depending on the input-data dimensions and length. The idea behind bit reversing is to shuffle the data by flipping the address bits around the middle of the address length so that if the data l.... [Design Idea by Mohammed Aziz, University of Leeds, UK]


           

Logarithmic Amplifiers:  #-B        C-L       M-R        S-Z

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