martes, 17 de marzo de 2009

Ley de Ohm


Edward Alberto Chaparro López

ABSTRACT

A basic principle of electronics, is on ohm's law,
which are the main characteristics of an electric
circuit as are the resistance, which is the ability
of an element to oppose the passage of flow; the
voltage, is the difference of power of stored
electrons and flow, the flow of electrons through
half driver. But we must take into account other
features such as the components of a basic
circuit, as they are; resistance, a source of
voltage and connectors.

It usually expresses by means of the formula I =
V/R, being I the current intensity in amperes, V
the electromotive force in volts and R the
resistance in ohms. The law of Ohm is applied to
all the electric circuits, so much to those of direct
current (DC) like to those of AC (CA), although
for the analysis of complex circuits and circuits of
CA should be used additional principles that
include inductances and capacitancias.

Formato soldadura

SOLDARURA

Edward Alberto Chaparro López
eachaparro@misena.edu.co

ABSTRACT

The welding in general, is a procedure for the
one which, two or more metallic pieces unite by
means of the application of heat, using in some
cases a contribution metal like in this case the
tin. The temperature with which they melt or
they unite the pieces it is always inferior to the
temperature of the same ones.

In this case we will speak of the welding with tin,
which is used for the armed of electronic circuits.
This consists on uniting the parts applying a drop
of fused tin and this way a perfect union is
guaranteed in the circuit.

Specifically first we will learn how to weld
carrying out a figure with copper wire.