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In-Circuit Tester - This is an in-circuit tester that to
check correctly wired. It can test a circuit board without be
influenced by semiconductor parts. (added 10/05) |
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Input filter prevents
instrumentation-amp RF-rectification errors - 13-Nov-03 Issue
of EDN Instrumentation amplifiers serve in a variety of
applications that need to extract a weak differential signal from
large common-mode noise or interference. However, designers often
overlook the potential problem of RF rectification inside the
instrumentation amplifier. The amplifier's common-mode rejection
normally greatly reduces common-mode signals at an instrumentation
amplifier's input.... [Design Idea by Charles Kitchin, Lew Counts,
and Moshe Gerstenhaber, Analog Devices, Wilmington, MA] |
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Instrumentation amp has differential outputs - 19-Aug-04
Issue of EDN State-of-the-art ADCs accept differential inputs,
allowing you to differentially implement the entire signal path
from sensor to converter. This structure provides significant
performance advantages, because differential signals increase the
dynamic range, reduce hum, and eliminate ground noise. Figures 1a
and 1b show two common differential-output
instrumentation-amplifier circuits.... [Design Idea by Moshe
Gerstenhaber and Stephen Lee, Analog Devices, Wilmington, MA] |
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Instrumentation amp has low offset, drift, and low-frequency noise - 21-Aug-08
Issue of EDN By cascading instrumentation amplifiers, you can achieve an
instrumentation amplifier with decade-gain having low offset, drift and LF noise....
[Design Idea by Marián Štofka, Slovak University of Technology, Bratislava, Slovakia] |
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Instrumentation amp makes noninverting integrator - 19-Sep-02 Issue of EDN
Figure 1a shows the classic implementation of an integrator. The circuit has two
properties that may be undesirable in same applications It necessarily inverts, and
it requires a split-supply or midsupply reference. Figure 1b shows an implementation
of an integrator that uses an LT1789 instrumentation amplifier.... [Design Idea by
Glen Brisebois, Linear Technology Corp, Milpitas, CA] |
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Instrumentation amp provides unipolar and bipolar outputs - 03-Aug-00 Issue of
EDN Intelligent sensors and signal conditioners for plant-automation systems must
produce outputs compatible with standard data-acquisition systems, such as PCs,
programmable logic controllers, and remote terminals for supervisory and control
systems. Standard analog inputs are 0 to 1V, ±10V, 0 to 1 mA, and 4 to 20 mA. The
circuit in Figure 1 makes all these signals available, using only three packages in
addition to the DAC.... [Design Idea by David Rathgeber, Alles Corp, Toronto, ON,
Canada] |
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Instrumentation Amp Swings Rail to Rail - 03/03/94 EDN-Design Ideas You can
combine an instrumentation amplifier and an inexpensive CMOS op amp to get the better
of two worlds the precision of a bipolar instrumentation amp and the5V single-supply
operation of the CMOS op amp. The characteristics of such a circuit.... [Design Idea
by R Mark Stitt, Burr-Brown, Tucson, AZ] |
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Instrumentation Amp works from One Supply - 03/16/00 EDN-Design Ideas [Design
Idea added 11/05] EDN migrating links. This link is not verified. Search the "title"
EDN for new link. |
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Instrumentation Amplifier - National Semiconductor Application Note (app note
added 2/06) |
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Instrumentation amplifier compensates system offset from single supply -
19-Mar-09 Issue of EDN An instrumentation amp operates from one supply and lets you
reset the system offset by applying a positive correction voltage to the VREF
input.... [Design Idea by Luca Bruno, ITIS Hensemberger Monza, Lissone, Italy] |
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Instrumentation amplifier extends DSO - 5-Jan-06 Issue of EDN Elusive current
waveforms required scope documentation.... [Design Idea by Bob Perrin, Sacramento, CA;
Edited by Brad Thompson and Fran Granville] |
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Instrumentation Amplifier has 290 MHz Gain Bandwidth Product - 05/12/94 EDN-Design
Ideas very high frequency instrumentation amplifier based on video-difference
amplifier....[Design Idea added 4/02] EDN migrating links. This link is not verified.
Google the "title" EDN for new link. |
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Instrumentation Amplifiers - National Semiconductor Application
Notes,28-Jun-1996 (app note added 4/02) |
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Instrumentation Amplifiers Solve Unusual Design Problems - AN-245 Analog Devices
Application Notes (app note added 2/06) Traditionally Considered Only for
Transducer-Conditioning Applications, Instrumentation Amplifiers Bring Unique
Performance Benefits to a Range of Other Applications as Well. |
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Instrumentation Applications for a Monolithic Oscillator - AN93 Linear Technology
Instrumentation applications for a monolithic programmable oscillator are presented in
this publication. Circuits include platinum and thermistor based thermometers, an
isolated thermometer and three relative humidity signal conditioners. Bipolar and FET
input c....(app note add 1/06) |
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Instrumentational Amplifiers - National Semiconductor Application Note (app note
added 2/06) |
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Instrumentation-amplifier-based current shunt exhibits 0V drop - 27-Nov-08 Issue
of EDN A current-to-voltage converter has 0V drop.... [Design Idea by Marián Štofka,
Slovak University of Technology, Bratislava, Slovakia] |
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LB-1: Instrumentation Amplifier - National Semiconductor Application Note (app
note added 2/06) |
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LB-21: Linear Brief 21 Instrumentational Amplifiers - National Semiconductor
Application Note (app note added 2/06) |
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Logic probe - This logic probe uses a single CMOS IC and shows three logic
conditions, High, Low and Pulsing. In addition if the probe input is neither hi or low
(the high impedance state of tri-output logic ic's) then no LED's will light. Power
from the logic probe is taken from the logic circui.... [Andy Collison] |
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Logic Probe with Pulse - One of the most frustrating problems with experimenting
is not be able to check the logic state of TTL or CMOS ic's without the use of a
triggered oscilloscope. The schematic diagram above shows a simple and inexpensive way
of building a 'Logic Probe' yourself. It will provide you with three visible
indicators; "Logic 1" (+, red led), "Logic 0" (-, green led), and "Pulse" (yellow
led).…. [Tony van Roon's circuit] |
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Logic Probe with Pulse CMOS - This circuit uses the four 2 input NOR gates
contained within the 4001 CMOS IC, and is primarily intended for testing cmos
circuits. The probe derives its power from the supply of the circuit being tested. The
first gate, N1, has its inputs tied together so that it operates as an inverter, and
it is biased by R1 so that roughly half the supply potential appears at its output.….
[Tony van Roon's circuit] |
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Logic Probe3 Audible TTL/CMOS - A logic tester with an audible indicator can be
handy when troubleshooting or testing a crowded circuit board. It allows you to keep
your eyes on the circuit, rather than on a LED on the tester. The project described in
this article is just such a tester. It provides an audible indication of the logic
level of the signal presented to its input.…. [Tony van Roon's circuit] |
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Logic Tester - This is a simple logic level tester with pulse stretch
capability. (added 10/05) |
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LOPIC Logic Probe with Pulser - This project is a combination Logic Probe and
Logic Pulser. It is capable of testing all sorts of digital and microcomputer
projects. You will find it extremely handy when designing a project as the golden
rule is to test everything in steps and stages during the design-and-construction
process. If you are not sure how a Logic Probe or Pulser works... |
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Low Voltage Instrumentation Amplifier - Circuit Ideas for Designers Application
Notes Advanced Linear Devices, Inc. (app note added 6/06) |
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Low-cost LCD bias generator uses main microcontroller as control IC - 26-Nov-09
Issue of EDN Control a buck-boost switch-mode regulator with the same microcontroller
that sends data to an LCD.... [Design Idea by Tom Hughes, Dannemora, Auckland, New
Zealand] |
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LT1167: Single Resistor Sets the Gain of the Best Instrumentation Amplifier -
DN182 Design Notes (Linear Technology) (app note added 1/06) |
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Lux Meter - This is a simple Lux Meter that is suitable for beginners. (added
10/05) |
