INVESTIGATION OF INFRARED RADIATION FOR CHECKOUT PURPOSES.
Abstract
A study was conducted in which the assumption that infrared techniques can be used to isolate faulty components in a circuit was unequivocally proved. The work consisted of a theoretical calculation of the probable thermal interactions which served to verify the experimental data obtained in the second half of the program. The experimental program consisted of a series of 35 experiments with a 9-component linear amplifier board; various departures from normal circuit operation were caused to occur by the systematic replacement of each component with a series of components having differing values. The data obtained from these experiments indicated that when a component of 1/4-watt nominal rating dissipates a minimum of 10 milliwatts, variations as small as 10% of value may be observed by a radiometer sensitive to approximately 0.25 C variation in temperature. The implications of this are that a radiometric fault isolation system having readily achievable specifications is now well within the state of the art. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1966
- Accession Number
- AD0480094
Entities
People
- James F. Stoddard
- Ricardo Vanzetti
- Stephen N. Bobo