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Now showing items 21-30 of 113
Simulación de fallas en sistemas de potencia usando componentes simétricos y el programa PSPICE
(Polytechnic University of Puerto Rico, 1995-06)
Fault simulation in power systems using symetric components and the computer program PSPICE
This article shows how to use the computer program PSPICE to analyze faults in power systems by the symmetrical components method. ...
Diseño de un controlador de lógica programable
(Polytechnic University of Puerto Rico, 1991-12)
This document shows how to design a programmable logic controller.
This type of design involves several steps, but these steps were grouped in two
subsequent phases. The first phase deals with the design and implementation
of ...
The generalized cross-product of vectors
(Polytechnic University of Puerto Rico, 1993-12)
The meaning of the scalar product of two vectors can be easily extended to a space of n dimensions. Similar generalization, related to the cross-product of vectors with more than three components, has not been formulated ...
Hadamard matrices, strongly regular graphs, and Galois fields
(Polytechnic University of Puerto Rico, 1994-06)
In this paper the author uses the concept of circulant matrices and the superposition principle to find, from the adjacency matrices of three regular graphs of order 8 and degree 2, tire adjacency matrix, M, of a strongly ...
Retículos cúbicos, ortomodulares, conexos, de altura 3 y configuraciones proyectivas ortomodulares conexas
(Polytechnic University of Puerto Rico, 1994-12)
Cubic orthomodular connected lattices of height 3 and orthomodular connected projective configurations
The construction of a connected orthomodular projective configuration, from a cubic, connected, orthomodular lattice ...
Análisis de corto circuito considerando cargas
(Polytechnic University of Puerto Rico, 1991-12)
Short circuit analysis is usually simplified neglecting shunt connections
including system loads. If under particular conditions, system loads cannot be
neglected, the superposition principle can be used, adding pre-fault ...
Diseño de un marcapaso programable con memoria y capacidad de comunicación
(Polytechnic University of Puerto Rico, 1992-12)
A design of a programmable pacemaker unit which integrates microprocessor control, memories and a communication device. This pacemaker uses programming techniques to adjust its operations to the patients' needs, to compile ...
Programa para verificar la calibracion de un rele de proteccion por impedancia
(Polytechnic University of Puerto Rico, 1992-12)
This article describes the preparation of a testing file to verify the calibration of an impedance protection relay using the Mastertest program. With this work we present an alternative to the ones now used for relay ...
Diseño de un modelo de simulación por computadoras para una sala de emergencias
(Polytechnic University of Puerto Rico, 1991-12)
This document describes the development of a simulation model and its use in the emergency room of a hospital. The first part of the document presents the problem and the system to be modeled, the objectives of the study, ...
Programa emulador del microprocesador MC6800 para correrse en sistemas de computadoras personales basadas en procesadores Intel
(Polytechnic University of Puerto Rico, 1991-12)
This paper presents the development of a program to emulate the
Heathkit ET-3400 trainer and the MC6800 microprocessor on an IBM or
compatible personal computer. The ET-3400 trainer is the only available tool
at the ...