oa Agrochemophysica - Integrated circuit switch for use in isotope research

Volume 3, Issue 3
  • ISSN : 0302-7112



In experiments with short-lived isotopes and for certain statistical tests, it is often necessary to operate a pulse counter many times in succession for relatively short periods. An electronic switch utilizing digital logic techniques and integrated circuits is descriptionbed, by means of which such counters can be operated repetitively for predetermined periods of 1, 2, 4, 8, 16, 32 or 64 seconds, with 'off' periods of 4 seconds between consecutive 'on' periods. Timing is derived from mains frequency. Both 'on' and 'off' periods are accurate within a few milli-seconds, with excellent reproducibility.

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