73 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Electronic Circuits"  
Results: 1 - 24 next
open access

Design of photovoltaic central power station concentrator array

Description: A design for a photovoltaic central power station using tracking concentrators has been developed. The 100 MW plant is assumed to be located adjacent to the Saguaro Power Station of Arizona Public Service. The design assumes an advanced Martin Marietta two-axis tracking fresnel lens concentrator. The concentrators are arrayed in 5 MW subfields, each with its own power conditioning unit. The photovoltaic plant output is connected to the existing 115 kV switchyard. The site specific design allows… more
Date: February 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design of a photovoltaic central power station: flat-plate array

Description: A design for a photovoltaic central power station using fixed flat-panel arrays has been developed. The 100 MW plant is assumed to be located adjacent to the Saguaro Power Station of Arizona Public Service. The design assumes high-efficiency photovoltaic modules using dendritic web cells. The modules are arranged in 5 MW subfields, each with its own power conditioning unit. The photovoltaic output is connected to the existing 115 kV utility switchyard. The site specific design allows detailed c… more
Date: February 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reliability considerations of electronics components for the deep underwater muon and neutrino detection system

Description: The reliability of some electronics components for the Deep Underwater Muon and Neutrino Detection (DUMAND) System is discussed. An introductory overview of engineering concepts and technique for reliability assessment is given. Component reliability is discussed in the contest of major factors causing failures, particularly with respect to physical and chemical causes, process technology and testing, and screening procedures. Failure rates are presented for discrete devices and for integrated … more
Date: February 1, 1980
Creator: Leskovar, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Design of a photovoltaic central power station

Description: Photovoltaic central power station designs have been developed for both high-efficiency flat-panel arrays and two-axis tracking concentrator arrays. Both designs are based on a site adjacent to the Saguaro Power Station of Arizona Public Service. The plants are 100 MW each, made of 5 MW subfields. The site specific designs allow detailed cost estimate for site preparation, installation, and engineering. These designs are summarized and cost estimates analyzed. Provided also are recommendations … more
Date: February 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Multiplicity sorter for shift-register coincidence electronics

Description: A multiplicity sorter for the latest Los Alamos National Laboratory version of shift-register coincidence electronics is described. The multiplicity information taken from the coincidence-gate up-down counter is decoded and gated onto the output lines by prompt real-plus-accidental (R+A) and delayed accidental (A) strobes. Multiplicities of 0-7 and greater than or equal to 8 are sorted for both the R+A and A gates.
Date: February 1, 1982
Creator: Swansen, J. E.; Collinsworth, P. R.; Krick, M. S. & Peterson, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Feasibility study: fuel cell cogeneration in a water pollution control facility. Final report

Description: A conceptual design study was conducted to investigate the technical and economic feasibility of a cogeneration fuel cell power plant operating in a large water pollution control facility. The fuel cell power plant would use methane-rich digester gas from the water pollution control facility as a fuel feedstock to provide electrical and thermal energy. Several design configurations were evaluated. These configurations were comprised of combinations of options for locating the fuel cell power pl… more
Date: February 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solder fused interconnections in multilayer circuits

Description: A new solder fusion process has been developed for production of multi-layer cables and multilayer printed wiring boards. The multilayer process consists of three steps: (1) the photo-etching fabrication of the basic flexcircuit, (2) the lamination bonding of several flexcircuit layers together, and (3) solder fusion interjoining of the exposed lands to provide electrical continuity. Solder fusion is the unique feature of the process. In the solder fusion process the multilayer assembly is neve… more
Date: February 1, 1977
Creator: Voida, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Basic photovoltaic principles and methods

Description: This book presents a nonmathematical explanation of the theory and design of photovoltaic (PV) solar cells and systems. The basic elements of PV are introduced: the photovoltaic effect, physical aspects of solar cell efficiency, the typical single-crystal silicon solar cell, advances in single-crystal silicon solar cells. This is followed by the designs of systems constructed from individual cells, including possible constructions for putting cells together and the equipment needed for a practi… more
Date: February 1, 1982
Creator: Hersch, P. & Zweibel, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MHD Integrated Topping Cycle Project

Description: This fourteenth quarterly technical progress report of the MHD Integrated Topping Cycle Project presents the accomplishments during the period November 1, 1990 to January 31, 1991. Testing of the High Pressure Cooling Subsystem electrical isolator was completed. The PEEK material successfully passed the high temperature, high pressure duration tests (50 hours). The Combustion Subsystem drawings were CADAM released. The procurement process is in progress. An equipment specification and RFP were … more
Date: February 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

New 1-k PROM for the coincidence-counter electronics package

Description: A new programmable read-only memory (PROM) for the Los Alamos-designed neutron coincidence electronics package is described. The new 1-k PROM allows remote control of the electronics by a computer or a remote terminal through an RS-232 serial data port. No modifications of the existing unit are required.
Date: February 1, 1982
Creator: Swansen, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Plasmadynamics and ionization kinetics of thermionic energy conversion

Description: To reduce the plasma arc-drop, thermionic energy conversion is studied with both analytical and numerical tools. Simplifications are made in both the plasmadynamic and ionization-recombination theories. These are applied to a scheme proposed presently using laser irradiation to enhance the ionization kinetics of the thermionic plasma and thereby reduce the arc-drop. It is also predicted that it is possible to generate the required laser light from a thermionic-type cesium plasma. The analysis t… more
Date: February 1, 1982
Creator: Lawless, J.L. Jr. & Lam, S.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fireset

Description: FIRESET is a PC-based computer code which calculates current as a function of time for an RLC circuit containing up to fifteen series conductors which undergo rapid heating and subsequent explosion as a consequence of an electric current which passes through them. In its original form, the code was developed to model electrical waveforms measured when a large, typically 25.4 x 25.4 x 0.051-mm, aluminum foil was exploded using a capacitor bank with tens of kilojoules of stored energy. The code p… more
Date: February 19, 1988
Creator: Lee, R. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Silicon drift chamber studies for the RHIC STAR experiment

Description: The two-hit resolution of a silicon drift chamber is measured using a pulsed Nd:Yag laser and a time digitizer readout. The data is analyzed by forming the covariance matrix in time samples, and transforming to a matrix in amplitude and time variation of each of the two hits. The resolution of the two-hit separation is found to be better than 25 microns with a drift field of 530 V/cm and a separation of more than 500 microns, with the resolution increasing to 50 microns as the separation nears … more
Date: February 24, 1992
Creator: Humanic, T.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

One nanosecond pulsed electron gun systems

Description: At SLAC there has been a continuous need for the injection of very short bunches of electrons into the accelerator. Several time-of-flight experiments have used bursts of short pulses during a normal 1.6 micro-second rf acceleration period. Single bunch beam loading experiments made use of a short pulse injection system which included high power transverse beam chopping equipment. Until the equipment described in this paper came on line, the basic grid-controlled gun pulse was limited to a rise… more
Date: February 1, 1979
Creator: Koontz, R.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Prototype results of a high resolution vertex drift chamber for the Mark II SLC Upgrade detector

Description: Test results from a full-length prototype of the drift chamber vertex detector for the Mark II SLC Upgrade detector are presented. The 22 cell jet chamber employs planes of grid wires above and below the sense wire plane to increase the electrostatic stability of the sense wires and to narrow the electron arrival time distribution. Two different grid designs have been investigated. The spatial resolution and pulse widths have been measured at a variety of operating points and for different timi… more
Date: February 1, 1986
Creator: Alexander, J.; Hayes, K.; Hoard, C.; Hutchinson, D.; Jaros, J.; Odaka, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Amplifier-Discriminator-Multiplexor card

Description: The Amplifier-Discriminator-Multiplexor (ADM) card described was designed for the External Muon Identifier at the 15 ft Bubble Chamber. The general scheme of the data readout of the External Muon Identifier is based on the use of a master clock. The ADM card serves to amplify the signals from the proportional tubes, discriminate them, latch the signals in parallel into a shift register. The data are then shifted out serially to the Time Digitizing System, using the master clock. The shift regis… more
Date: February 1, 1986
Creator: Graupman, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HEMP-induced transients in electric power substations

Description: A nuclear detonation in or above the earth's atmosphere produces an intense electromagnetic pulse (EMP). A large portion of the EMP electromagnetic energy is within the RF spectrum. A detonation at high altitudes above 40 km produces an EMP called high-altitude EMP (HEMP). HEMP is a steep-front short duration transient with a rise time on the order of a few nanoseconds which decays to near zero in less than a microsecond. A single high-altitude burst can subject much of the continental United S… more
Date: February 1, 1992
Creator: Wiggins, C. M.; Thomas, D. E. & Salas, T. M. (BDM International, Inc., Albuquerque, NM (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of CRID (Cerenkov Ring Imaging Detector) single electron wire detector

Description: We describe the R and D effort to define the design parameters, method of construction and experimental results from the single electron wire detectors. These detectors will be used for particle identification using the Cerenkov Ring Imaging techniques in the SLD experiment at SLAC. We present measurements of pulse heights for several gases as a function of gas gain, charge division performance on a single electron signal using both 7 /mu/m and 33 /mu/m diameter carbon wires, photon feedback in… more
Date: February 1, 1989
Creator: Aston, D.; Bean, A.; Bienz, T.; Bird, F.; Caldwell, D.; Cavalli-Sforza, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High speed switching in gases

Description: A fast, efficient and reliable switch is the basic ingredient of a pulse power accelerator. Two switches have been proposed so far: the solid state switch, and the vacuum photodiode switch. The solid state version has been tested to some extent, albeit at low (few kilovolts) level, with risetime around 10 ps in the radial line transformer configuration. The vacuum photodiode is being investigated by Fisher and Rao at Brookhaven National Laboratory. Common to both switches is the need of a short… more
Date: February 1, 1989
Creator: Cassell, R.E. & Villa, F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Use of embedded microcomputers in system debugging and maintenance

Description: Systems which use embedded microcomputers to perform control functions can often double as flexible debugging and maintenance devices by switching in high level language ROMS. This paper describes systems in which such benefits are successfully exploited.
Date: February 1, 1981
Creator: Meng, J. & Weaver, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microcomputer based test system for charge coupled devices

Description: A microcomputer based system for testing analog charge coupled integrated circuits has been developed. It measures device performance for three parameters: dynamic range, baseline shift due to leakage current, and transfer efficiency. A companion board tester has also been developed. The software consists of a collection of BASIC and assembly language routines developed on the test system microcomputer.
Date: February 1, 1981
Creator: Sidman, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

ACP/R3000 processors in data acquisition systems

Description: We describe ACP/R3000 processor based data acquisition systems for high energy physics. This VME bus compatible processor board, with a computational power equivalent to 15 VAX 11/780s or better, contains 8 Mb of memory for event buffering and has a high speed secondary bus that allows data gathering from front end electronics. 2 refs., 3 figs.
Date: February 1, 1989
Creator: Deppe, J.; Areti, H.; Atac, R.; Biel, J.; Cook, A.; Edel, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen