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High Input Impedance Precision DC Summing Amplifier - This circuit presents a simple precision DC summing amplifer that has high imput impedance of 10Mohm. The obviouds advantage is that the 10Mohm high input resistance of the summing resistor(s) reduces the loading on the input signal sources and therefore affords better signal accuracy and integrity. __ Advanced Linear Devices, Inc
High-Performance Adder Uses Instrumentation Amplifiers - 09/03/09 EDN-Design Ideas Make an adder circuit using instrumentation amplifiers to increase input impedance Design 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. __ Designed by Tony Fisher
Low Voltage High Input Impedance Precision DC Summing Amplifier - Circuit Ideas for Designers App Note __ Advanced Linear Devices, Inc
RISC µP implements fast FIR filter - 01/21/99 EDN-Design Ideas NOTE
: 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. Design by Sorin Zarnescu, NEC Electronics, Santa Clara, CA
Single Amplifier 4 Band Passive EQ - Schematic Only __ Contact: info @ forsselltech . com
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 __ Designed by Rod Elliott ESP
Model fixed-point DSP arithmetic in C - 03/18/99 EDN-Design Ideas NOTE
: Page includes
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—provIdeas faster execution and better portability than HDLs and allows early exploration of the trade-off between bus width and performance. Design by Roger Maher, SSL Ltd, Dublin, Ireland
Video emitter uses battery power - 08/30/01 EDN-Design Ideas 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 at key locations. You can use the small and simple system each time you need to capture image and sound on the run Design by JM Terrade, Clermont-Ferrand, France |
