General-purpose timer from transistor logic to auxiliary equipment

C. H. Ludmer*, J. F. Disterhoft

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This paper describes a low-cost circuit for the control and timing of auxiliary experimental equipment by a variety of signals from 5 V, integrated-circuit logic. The circuit is designed for variable timing and switching up to 240 AC V at 3 A, with two independent timing parameters, delay and duration, in response to positive-going or to negative-going logic signal transitions.

Original languageEnglish (US)
Pages (from-to)713-715
Number of pages3
JournalElectroencephalography and Clinical Neurophysiology
Volume42
Issue number5
DOIs
StatePublished - May 1977

Funding

To ensure the capacity of the preceding logic to drive the relay, a buffer transistor has been inserted (see Fig. 1) for current gain to close the relay when * This research was supported by NIH Grant No. 5-R01-NS12317 to J.F. Disterhoft.

ASJC Scopus subject areas

  • Clinical Neurology
  • General Neuroscience

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