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Amplifier Circuits: Logarithmicc
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Amplifier -- Main Page
Math Functions -- Main Page
Logarithmic Amplifiers: #-B
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Last Updated on:
Monday, October 03, 2011 06:07 PM |
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Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
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Simple Algorithm Nulls DC Offsets in DSP - 09/15/94 EDN-Design
Ideas:....[Design Idea added 11/05] EDN migrating links. This link is
not verified. Google the "title" EDN for new link. |
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Simple algorithm transforms filter coefficients - 01/21/99 Issue
of EDN To synthesize infinite-impulse-response (IIR]-filter
functions, expressed as H(z], you commonly use analog prototype-filter
functions, expressed as H(s], using the bilinear-z transform. This
operation entails some algebraic complexity in calculating the filter
coefficients. The simple algorithm shown here transforms the
prototype-filter coefficients (W0, W1, W2]to the IIR digital-filter
coefficients (U0, U1, U2]. These coefficients transform from....Page
includes several designs. Scroll to find this one.... [Design Idea by
Frank Vitaljic, Bellingham, WA] |
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Single Stage Gives Logarithmic Gain Steps - 03-Mar-94 Issue of
EDN-Design Ideas By placing a variable component in the positive
feedback loop of an op amp; you can vary the gain of the stage
logarithmically with respect to a linear resistance or conductance.…
[Design Idea by Allen Windhorn, Reliance Electric, North Mankato, MN] |
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Software snippet provides improved subset-sum algorithm - 25-Sep-03 Issue of EDN
The subset-sum problem is one of the most frequently occurring NP (nondeterministic,
polynomial-time]-complete] problems. It asks whether a subset of numbers in a set of
positive integers adds up exactly to a given value. A relaxed version of the problem
tries to identify a subset of numbers that adds up to a maximum value no greater than
a given value.... [Design Idea by Ivan Basov, Brandeis University, Waltham, MA] |
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State of the Art Characterization of Optical Components for Dwdm Applications -
Aligent App Note (app note added 04/05/06) |
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Theory & Applications of Logarithmic Amplifiers - National Semiconductor
Application Note 24-Feb-1999 (app note added 4/02) |
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Transient Analysis - One of the most complex and intriguing capabilities of the
SPICE algorithm is the Transient Analysis. How do we take a collection of resistive
and energy-storage components, then find its time response to an arbitrary input
waveform? Yes, you could formulate and solve the differential equations to get the
response versus time, but SPICE is not a differential equation solver....(spice design
added 02/09) |
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Using the ADXL202/ADXL210 with the Parallax BASIC Stamp Module® to Speed Algorithm
Development - AN-596 Analog Devices Application Notes (app note added 6/06)
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Versatile power supply load uses light bulbs - 7-Feb-02 Issue of EDN Improvising
loads for bench-testing and designing power supplies is often a frustrating and
sometimes hazardous experience. When you push large power resistors to their limit,
they tend to burn benches and melt solder connections. Many electronic loads are on
the market but are usually expensive and of laboratory-type precision and often
represent overkill for the average designer.... [Design Idea by William Sloot,
Computron Display Systems, Mount Prospect, IL] |
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White LED driver provides 64 step logarithmic dimming - 10-Jun-04 Issue of EDN
The circuit of Figure 1 is designed for portable-power applications that require white
LEDs with adjustable, logarithmic dimming levels. The circuit drives as many as four
white LEDs from a 3.3V source and adjusts the total LED current from 1 to 106 mA in 64
steps of 1 dB each. The driver is a charge pump that mirrors the current ISET (sourced
from IC3's SET terminal] to produce a current o.... [Design Idea by William Hadden,
Maxim Integrated Products, Sunnyvale, CA] |
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Logarithmic Amplifiers:
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S-Z |
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