Simple liquid nitrogen level controller for use in open cryostat

Authors

  • Walter S. D. Folly Núcleo de Física, Universidade Federal de Sergipe

Keywords:

Liquid nitrogen, cryogenic, flip-flop, Schmidt-Trigger

Abstract

In this work, is described the construction of a simple but efficient level controller that operates keeping the level of liquid nitrogen stored in a cryostat between two fixed values. The system operation is based on the great variation of electrical resistivity of copper with respect the temperature and also on the hysteresis of a Schmidt-trigger flip-flop circuit.

Downloads

How to Cite

Folly, W. S. D. (2011). Simple liquid nitrogen level controller for use in open cryostat. Scientia Plena, 3(4). Retrieved from https://scientiaplena.org.br/sp/article/view/604

Issue

Vol. 3 No. 4 (2007): July|August/Julho|Agosto 2007

Section

Articles

License

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work