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Related Experiment Videos

A presettable multichannel digital timer.

N H Sabah

    Journal of Applied Physiology
    |April 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a versatile digital timer capable of generating multiple precisely timed pulses. The crystal-controlled timer allows independent presetting of delays for up to 46 pulses, offering wide timing ranges.

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    Area of Science:

    • Digital electronics
    • Instrumentation and measurement

    Background:

    • Accurate timing control is crucial in various electronic applications.
    • Existing digital timers may lack flexibility in generating multiple, independently controlled pulse delays.

    Purpose of the Study:

    • To present a novel digital timer design.
    • To enable independent presetting of pulse delays for a pulse train.
    • To achieve a wide range of timing intervals with high precision.

    Main Methods:

    • Utilized digital integrated circuits for timer logic.
    • Incorporated thumbwheel switches for presetting delay values.
    • Employed crystal-controlled oscillators for timing accuracy.
    • Designed an output stage with enhanced drive capability.

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    Main Results:

    • Successfully generated a pulse train of up to 46 pulses.
    • Demonstrated independent presettability of each pulse's delay.
    • Achieved timing intervals from 0.1 ms to 99.99 s.
    • Verified the timer's functionality using digital integrated circuits.

    Conclusions:

    • The developed digital timer offers significant flexibility and precision for generating complex pulse sequences.
    • The design is suitable for applications requiring independently controlled, crystal-accurate timing intervals.
    • The use of digital integrated circuits ensures reliability and potential for miniaturization.