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Data Logging /
Acquisition Circuits Page
3
Data Acquisition / Logging: #-AB-CD-KL-NP-ST-Z Last Updated on:
Monday, November 02, 2009 03:40 PM
Circuits
Designed by Dave Johnson, P.E. :
DVD Recorder + TV
Camera Make Cheap Data Logger
Sometimes recording the results of a test requires as much ingenuity as designing
the product. Consider a situation which requires the collection of many different
variables over a long period of time. Perhaps you are conducting temperature cycle
tests on an electronic circuit and you want to know what changes occur in circuit
performance over a 24 hour period. You could stay up all night and collect the data
yourself....
Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
Data Acquisition Circuit Collection - AN62 Linear Technology This application note
presents a wide variety of data acquisition circuits. The detailed circuit schematics
cover 8-, 10-, and 12bit ADC and DAC applications, serial and parallel digital
interfaces, battery monitoring, temperature sensing, isolated interfaces, and
connections to various popular microprocessors and microcontrollers. An appendix ....
Data Acquisition System uses Fault Protection - 04/15/04 EDN-Design Ideas:
Sensitive systems, such as those in aircraft, must withstand fault conditions, thereby
avoiding component and system damage, because a sensor failure could cause a
catastrophic event to occur. A channel protector, comprising two n-channel MOSFETs
connected in series with a p-channel MOSFET, can protect sensitive.....(design idea
added 02/05)
DVD Recorder + TV Camera Make Cheap Data Logger - Sometimes recording the
results of a test requires as much ingenuity as designing the product. Consider a
situation which requires the collection of many different variables over a long
period of time. Perhaps you are conducting temperature cycle tests on an
electronic circuit and you want to know what changes occur in circuit performance
over a 24 hour period. You could stay up all night and collect the data
yourself.... ….(designed by David A. Johnson)
Filter Circuit for the Earthworm Seismic Data Acquisition System - The
following design criteria were used to design the Earthworm Filter board. It had
to provide low output impedance, a low-pass filter of at least one pole,
preferrably it should use
low power so that no external power would be necessary....(circuit design added
04/05/06)
Inexpensive envelope tracker handles wide signal variations - 06/22/06 EDN-Design
Ideas: (design idea added 09/06) Converting band-limited NRZ
(non-return-to-zero)data to a digital format suitable for microprocessors and
other digital systems poses problems when a signal's duty cycle or amplitude
varies or when its average level unpredictably wanders within a given dc range....
Interfacing the LTC1290 - AN36 Linear Technology A collection of interface
applications between various microprocessors/ controllers and the LTC1290 family
of data acquisition systems. The note is divided into sections specific to each
interface.
Keyboard Data Acquisition System is Cheap and Simple - 02/03/00 EDN-Design
Ideas: The most important criteria of a data-acquisition system for college
science laboratories are simplicity and price rather than precision or speed. The
data-acquisition system in Figure 1 offers adequate precision of less than 0.5%
and speed of 1 Hz to replace the outdated laboratory chart recorder.....(design
idea added 10/05)
