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Adder Circuits
Last Updated on: Thursday, April 07, 2016 01:00 PM

 
Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

8 Channel Passive Summing Busses -  balanced and unbalanced input designs  … [Forssell Technologies/Fred Forssell or the original designers as shown on the schematic pages]

AN-578: RMS Calculations for Energy Meter Applications using the ADE7756 -  AN-578 Analog Devices App Note -     The document describes  implementation of an rms signal processing algorithm using  ADE7756 and a Microcontroller (PIC16C63)   from Microchip.…

Celsius-to-digital thermometer works with remote sensor -  04/15/04  EDN Design Idea   You can use a single-supply system to precisely measure the temperature at a remote location with less than 1°C error over a 0 to 100°C range (Figure 1). The circuit includes T1, a low-cost AD590 temperature sensor; IC1, an AD8541 r… [by Elana Lian and Chau Tran, Analog Devices, Wilmington, MA] 

Class A JFET Opamp Circuit -  First Generation design that means it is not our latest design.  … [Forssell Technologies/Fred Forssell or the original designers as shown on the schematic pages]

Gyrator Filter Design Info for Single Amp EQ -  The gyrator is used in place of the inductor in a LC filter. …

High Input Impedance DC Summing Amplifier -  Circuit Ideas for Designers App Note - … [Advanced Linear Devices, Inc]

High Input Impedance Precision DC Summing Amplifier -  Circuit Ideas for Designers App Note - … [Advanced Linear Devices, Inc]

High-Performance Adder Uses Instrumentation Amplifiers -  09/03/09  EDN Design Idea   Make an adder circuit using instrumentation Amplifiers to increase input impedance… [by Moshe Gerstenhaber and Michael O'Sullivan, Analog Devices, Wilmington, MA]

LC filter design on-line calculator -  This is an interactive design package for designing analogue (i.e. hardware) filters made of inductors and capacitors (Ls and Cs).  Fill in the form and press the ``Submit'' button, and a filter will be designed for you. … [Tony Fisher]

Low Voltage High Input Impedance Precision DC Summing Amplifier -  Circuit Ideas for Designers App Note - … [Advanced Linear Devices, Inc]

LX1741/1742 Formula Calculator for AN22 -  MicroNote 1310 from Microsem…

Model fixed-point DSP arithmetic in C -  03/18/99 EDN Design Idea (contains several designs, scroll to find this one)   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 as Verilog or VHDL. However, a technique that models these effects in C—the function "bit_limit" in Listing 1—provides faster execution and better portability than HDLs and allows early exploration of the trade-off between bus width and performance… [by Roger Maher, SSL Ltd, Dublin, Ireland]

Regenerating the DS1847/ DS1848 Resistor Calibration Constants -  Maxim App Note - / 1921 / Jun-08…

RISC µP implements fast FIR filter -  01/21/99 EDN Design Idea (contains several designs, scroll to find this one)   When it comes to implementing a fast FIR filter, current RISC µPs can compete with DSP µPs. The FIR algorithm continuously implements the following equation: N=n–1 Out=Sum[in(t[-]n)coeff(n)] N=0, where N is the number of taps, or the number of multiply-accumulate (MAC) instructions of the filter.Using a delay line to implement this equation is common and involves the ability to manage a circular buffer. … [by Sorin Zarnescu, NEC Electronics, Santa Clara, CA]

Simple Rules for Choosing Resistor Values in Adder-Subtractor Circuits -  Analog Devices-Analog Dialogue… [by Sheingold, Dan]

Single Amplifier 4 Band Passive EQ -  …

Subwoofer Equaliser -  The Linkwitz transform circuit is a hugely flexible way to equalize the bottom end of a sealed loudspeaker enclosure. A speaker that is corrected using this method is flat from below resonance to the upper limit of the selected driver. The low frequency roll off point is determined by the parameters of the transform circuit…

Using the AD7732/AD7734/AD7738/AD7739 Checksum Register -  AN-626 Analog Devices App Note  …

Video emitter uses battery power -  08/30/01  EDN Design Idea   The block diagram in Figure 1 shows how to make a cable-free, direct-video system. The system allows users to walk from booth to booth at an exhibition to interview people and to display the interviews in real time on three screens… [by JM Terrade, Clermont-Ferrand, France]


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Adder Circuits


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