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Math Function:
Logarithmic Page 4
Math Functions - Main Page -
Logarithmic Math Function: #-A - ,
C-F - , L-O - ,
P-Z
Last Updated on:
Wednesday, June 02, 2021 04:35 AM |
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Links to electronic circuits, electronic schematics and designs for engineers, hobbyists, students & inventors:
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Phone Bill Calculator - The main idea is to calculate phone
bill, so we want to find time taken by each call I make, and by knowing
the bill of the minute, we can calculate the whole phone bill for any
period. ….(added 05/08) |
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PIC16C5x/PIC16Cxx Utility Math Routines - Microchip Application
Note Published 26-Aug-97....[App Note] |
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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] |
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Reference stabilizes exponential current - 25-Oct-01 Issue of EDN In
an antilog converter, the difference between the base voltages of two transistors sets
the ratio of their collector currents The use of matched transistors balances
the first-order temperature coefficient but leaves a temperature-dependent gain term,
q/kT. Classic antilog circuits use a thermistor in the drive circuitry to correct this
temperature dependency....[Design Idea by Tom Napier, North Wales, PA] |
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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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Use derivatives to catch RF calibration errors - 05/27/99 EDN-Design
Ideas....any RF-system calibrations involve checking for minimum power available or
removing system offsets. One example is the checking of an RF source’s output
power…PDF has several circuits, please scroll to find this one…. [Design Idea by
Steven C Hageman, Hewlett-Packard Co, Santa Rosa, CA] |
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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
Math Function: #-A - ,
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