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  • 1
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    Timing Control System (1987)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A timing control system is disclosed which is particularly useful in connection with simulated mortar shells. Special circuitry is provided to assure that the shell does not over shoot, but rather detonates early in case of an improper condition; this ensures that ground personnel will not be harmed by a delayed detonation. The system responds to an externally applied frequency control code which is configured to avoid any confusion between different control modes. A premature detonation routine is entered in case an improper time-setting signal is entered, or if the shell is launched before completion of the time-setting sequence. Special provisions are also made for very early launch situations and improper detonator connections. An alternate abort mode is provided to discharge the internal power supply without a detonation in a manner that can be externally monitored, thereby providing a mechanism for non-destructive testing. The abort mode also accelerates the timing function for rapid testing.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NAS 1.71:NPO-16882-1-CU
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    A fuzzy logic controller for hormone administration using an implantable pump (1994)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: This paper describes the requirements for a Fuzzy Logic Controller for the physiologic administration of hormones by means of a FDA-approved surgically implantable infusion pump. Results of a LabVIEW computer simulation for the administration of insulin for diabetic adult patients as well as human growth hormone for pediatric patients are presented. A VHS video tape of the simulation in action has been prepared and is available for viewing.
    Keywords: AEROSPACE MEDICINE
    Type: NASA, Washington, Technology 2003: The Fourth National Technology Transfer Conference and Exposition, Volume 1; p 158-167
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Inductively-Activated Short-Interval Timer (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Timing circuit in pneumatically launched projectile triggers explosive charge in projectile at specified delay after launch. Both power and control signals coupled inductively to timer from stationary launcher circuitry. Eliminates need for direct electrical contacts, which are unreliable and generate sparks that trigger explosive accidentally. Inductive coupling also provides higher reliability in field operation than contacts. Concept useful in such other safety-related applications as remotely or automatically controlling flow of bottled flammable gas.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-16882 , NASA Tech Briefs (ISSN 0145-319X); 13; 3; P. 28
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Resistor Extends Life Of Battery In Clocked CMOS Circuit (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Addition of fixed resistor between battery and clocked complementary metal oxide/semiconductor (CMOS) circuit reduces current drawn from battery. Basic idea to minimize current drawn from battery by operating CMOS circuit at lowest possible current consistent with use of simple, fixed off-the-shelf components. Prolongs lives of batteries in such low-power CMOS circuits as watches and calculators.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-17967 , NASA Tech Briefs (ISSN 0145-319X); 15; 9; P. 29
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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