Skip to content
1887
Volume 12, Issue 4
  • ISSN: 0032-1400

Abstract

When, as in many low torque potentiometers, contact pressures must not exceed a few grams the use of noble metals for both resistance wire and wiping contact becomes almost essential. As the factors that determine the electrical and mechanical behaviour of such low load sliding contacts have not yet been established, wiper/slidewire combinations are still selected on an empirical basis. This paper, based on a lecture recently delivered to the Fourth International Research Symposium on Electrical Contact Phenomena at Swansea, describes some results obtained on an apparatus in which the abrasion resistance and frictional characteristics of precision resistance alloys can be assessed in an objective manner at very low contact loads. Under such conditions metal is transferred from wiper to resistance alloy and the efficiency of this transfer process determines the electrical behaviour of these sliding contacts.

Loading

Article metrics loading...

/content/journals/10.1595/003214068X124122128
1968-01-01
2024-03-29
Loading full text...

Full text loading...

/deliver/fulltext/pmr/12/4/pmr0012-0122.html?itemId=/content/journals/10.1595/003214068X124122128&mimeType=html&fmt=ahah

References

  1. Johnson Matthey, Prov. Pat. 21853/67
  2. Johnson Matthey, B.P. 861,646
  3. Antler M. Elsevier Pub. Co, London, 1964, pp. 181203; Platinum Metals Rev., 1966, 10, 2 [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.1595/003214068X124122128
Loading
/content/journals/10.1595/003214068X124122128
Loading

Data & Media loading...

  • Article Type: Research Article
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error