Abstract
A timer circuit is presented that can produce pulse durations ranging from 1 to 20,000 msec. The timer has high reliability, is inexpensive, and simple to construct.
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HUMBLET, M.P. Designidea:Unijunction transistor multiplies monostable's pulse width. In S. Weber (Ed.),Modern digital circuits. New York: McGraw-Hill, 1964. Pp. 70–71.
NILSSON, T. H. Two-pulse interval vision thresholds. Journal of the Optical Society of America, 1969, 59, 753–756.
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The author wishes to thank J. Brugman for his technical advice and for making available the facilities of Technical Services of the University of Alberta for construction and testing of these timers.
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Nilsson, T.H. Transistorized timer for sensory-behavioral research. Behav. Res. Meth. & Instru. 1, 256–257 (1969). https://doi.org/10.3758/BF03209906
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DOI: https://doi.org/10.3758/BF03209906