- Published in issue 12/1993 on page 36
Active two-wire temperature sensor
When a physical quantity (measurand) has to be measured at a distance. It is normally necessary to provide the sensor proper with an amplifier. This amplifier needs a power supply, which means that a third wire has to be taken to the sensor. In the present circuit, the measurand and the powersupply use the same two lines.This article is one from our 90s collection, the articles are downloadable as a PDF for all our members. Although the information we have on the website is a little less rich than you have become used to since 2000, the articles themselves are still a good read. Please enjoy the professionally designed, easy to build circuits that were considered the latest developments in electronics and information technology at the time they were written. In most cases they have stood the test of time pretty well.