4,872 research outputs found
Test apparatus for locating shorts during assembly of electrical buses
A test apparatus is described for locating electrical shorts that is especially suited for use while an electrical circuit is being fabricated or assembled. A ring counter derives input pulses from a square wave oscillator. The outputs of the counter are fed through transistors to an array of light emitting diodes. Each diode is connected to an electrical conductor, such as a bus bar, that is to be tested. In the absence of a short between the electrical conductors the diodes are sequentially illuminated. When a short occurs, a comparator/multivibrator circuit triggers an alarm and stops the oscillator and the sequential energization of the diodes. The two diodes that remain illuminated identify the electrical conductors that are shorted
Experimental phase equilibria constraints on pre-eruptive storage conditions of the Soufreiere Hills magma
Complex permeability of soft magnetic ferrite polyester resin composites at frequencies above 1 MHz
Composite soft magnetic materials consist of magnetic particles in a non-magnetic matrix. The properties of such materials can be modelled using effective medium theory. Measurements have been made of the complex permeability of composites produced using ferrite powder and polyester resin. The success of various effective medium expressions in predicting the variation of complex permeability with composition has been assessed
Petrologic evidence for pressure-temperature conditions and recent reheating of andesitic magma erupting at Soufriere Hills Volcano, Montserrat, WI
State Aid for Education in Australia: An Overview
This paper discusses the history of education in Australia, the current state of education in Australia at the time of writing, and the need to accept funding for public, private and catholic schools in order to continue running schools in the future
Steps Toward a Unified University System for the Seventh-day Adventist Church in the South Pacific
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