Accession Number : AD0754182

Title :   Modulation Systems for Galvanometer Controlled Temperature,

Corporate Author : GHENT RIJKSUNIVERSITEIT (BELGIUM) NATURAL SCIENCE LAB

Personal Author(s) : Outryve,E. Van ; Jacobs,R.

Report Date : 20 FEB 1968

Pagination or Media Count : 2

Abstract : Two modulation systems are described. In the first one a triangular wave voltage is used to modulate a thermocouple signal. Together with this system is given a description of a new galvanometer relay system wherein the drift of the photosensitive resistors in the galvanometer is of no importance. Secondly a description is given of a simple way of modulating a Wheatstone bridge with an indirectly heated negative temperature coefficient resistor. Both systems enable temperature control to plus or minus 0.01 degC. (Author)

Descriptors :   (*INSTRUMENTATION, *TEMPERATURE CONTROL), GALVANOMETERS, MODULATION, ELECTRIC BRIDGES, THERMOCOUPLES, BELGIUM

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE