Circuit provides cold junction
compensation:
11/28/2002 EDN - Design Ideas / The accuracy of
any circuit or system that uses a thermocouple
to determine the temperature of a process is
limited by the accuracy of the method used to
perform cold-junction compensation. In a
thermocouple measurement, two wires of
dissimilar metal join together at the "hot," or
measurement, junction.. |
|
DPPs make nonvolatile microvolt
DAC: 10/31/2002 EDN
- Design Ideas / The availability of a seemingly
limitless variety of monolithic DAC chips makes
it easy to implement most
digital-to-analog-conversion applications with a
single off-the-shelf device. Sometimes, an
unusual set of requirements necessitates a
multichip approach, however. One example of such
a requirement is the need for nonvolatility of
the DAC's setting in power-up and -down cycles.. |
Network imitates thermocouples:
11/08/2001 EDN - Design Ideas / Thermocouples
find widespread use for temperature measurement
in systems. During system design or testing, you
must observe the system's response at different
temperatures. However, it's inconvenient to heat
a thermocouple every time you need to check a
system's performance. You can use the simple
trick of touching the thermocouple with a hot
soldering iron, but this method provides only
... . |
Thermocouple Interfaces to Serial
Port: 11/09/95 EDN-Design
Ideas |
Thermocouple thermometer features
a 1-mV/�F output:
10/18/99 Electronic Design - Ideas for Design /
An inexpensive, battery-powered,
cold-junction-compensated, thermocouple
thermometer with an output of 1 mV/�F can be
constructed using type-K thermocouple wire.
Because type-K thermocouple. . . |
ΔVBE-Based Cold-Junction
Compensator For Thermocouples:
11/06/00 Electronic Design - Ideas for Design /
The familiar thermocouple (TC) is probably the
oldest species of electronic temperature sensor
extant. TCs consist merely of two dissimilar
conductors joined at the temperature measuring
point. They’re simple to fabricate and look (at
first glance) |