Idiomas disponibles
Idiomas disponibles
LCD.-Liquid crystal display, a device invented by Jack Janning,
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who was an employee of NCR. It is an electrical system for
data presentation formed by 2 transparent conductive layers
and a special crystalline material in the middle (liquid crystal)
which have the ability to orientate light as it passes through.
LED.-
Light-emitting diode, a semiconductor device (diode)
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that emits light that is almost monochromatic, that is to
say, it has a very narrow spectrum when it is polarised
directly and is penetrated by an electric current. The colour
(wavelength) depends on the semiconductor material used in
the construction of the diode, and can vary from ultraviolet,
passing through the visible light spectrum, to infrared, the
latter called IRED (infra-red emitting diode).
Circuit breaker.-
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interrupting the electrical current of a circuit when it exceeds
certain maximum values.
On-line mode.-
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connected to a system, is operative, and normally has its
power supply connected.
Inverter.-
An inverter is a circuit used to convert DC into AC.
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The function of an inverter is to change a DC input voltage
to a symmetrical AC output voltage, with the magnitude and
frequency desired by the user or designer.
Rectifier.-
In electronics, a rectifier is the element or circuit
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that converts AC into DC. This is done by using rectifier diodes,
whether solid state semiconductors, vacuum valves or gaseous
valves, such as those containing mercury vapour. Depending
on the characteristics of the AC power that they use, they are
classified as single-phase when they are powered by a mains
phase or three-phase when they are powered by three phases.
Depending on the type of rectification, they can be half wave
when only one of the half cycles of the current is used or full
wave when both half cycles are used.
Relay.-
A relay is an electromechanical device that functions
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as a switch controlled by an electrical circuit in which, by
means of an electromagnet, a set of one or several contacts
is activated to enable other independent electrical circuits to
be opened or closed.
SCR.-
Silicon controlled rectifier, commonly known as a
•
thyristor, a 4-layer semiconductor device that works as an
almost ideal switch.
THD.-
Total harmonic distortion. Harmonic distortion occurs
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when the output signal of a system does not equal the signal
that entered it. This lack of linearity affects the waveform be-
cause the device has introduced harmonics that were not in
the input signal. Since they are harmonic, that is to say, multi-
ples of the input signal, this distortion is not so dissonant and
is less easy to detect.
USER MANUAL
A circuit breaker is a device capable of
A device is said to be on-line when it is
SPS.ADVANCE RT2 UNINTERRUPTIBLE POWER SUPPLY (UPS)
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