16 Jun 2009

Resistor

Resistor is the basic electronic components used to limit the number of flow
that flows in a series. In accordance with the name and the resistor are resistif
generally made of carbon materials. From ohms law is known, resistansi inverted proportionate
with the amount of cash that flows through. Unit resistansi of a resistor is called Ohm
or is represented with the symbol W (Omega).
For states included resistansi should limit the ability charged. Various
resistor in a range of materials from the different attributes that different. Other specifications
who needs to choose a design resitor in addition to large resistansi is
watts of it. Because the resistor dialiri working with electric current, it will happen disipasi power
the form of heat W = I2R watts. The large physical size of a resistor can show
the greater ability disipasi power resistor is. Generally available in the market size of 1 / 8,
1 / 4, 1, 2, 5, 10 and 20 watts. Resistor that has disipasi power 5, 10 and 20 watt general
cubic-shaped aft square white, but there is also a form of
cylinder. But usually for the jumbo size of this resistor value resistansi printed directly
in the body, such as 100W5W.
Resistor in the theory and practice in writing letters to the symbolism R. View from
physical size of a resistor with one that does not mean that other similar large value
constraints. Constraints in the value of a resistor resistansi.

Resistor Available With Materials and construction.
Based on the type and materials used to make the resistor be divided into
wire resistor, carbon resistor and metal oxide resistor. While charcoal and resistor resistor
metal oxide based on the order of known composition and resistor film resistor.
However, in the trade-resistor resistor resistor is divided into
fixed (fixed resistor) and a variable resistor. Use low power for the primary is
type of custody is permanent custody of a mixture of carbon printing. Relative size of all the detainees remain
and still does not change to the power rating (the number of watts), adding to the size
increase the power rating in order to maintain the flow and power loss lesapan greater.
Custody of change, as noted from the name, has a
custody of the terminal can be changed with the price to play a dial, knob, thread or whatever
appropriate for an application. They can have two or three terminals, but most of akan
has three terminals. If two or three terminal used to control large voltage,
then usually in a potensiometer. Although the actual three-terminal device can be
used as a rheostat or potensiometer (depending on how connected), it is usual
potensiometer called when the list in the trade magazine or a special request for the application.
Most potensiometer has three terminals. Dial, knob, and thread in the middle
packaging, control movement of a contact element can move along the barrier
that is connected between the two outside terminals. Custody outside the terminal between the price fixed
full of the potensiometer, not terpengaruhi position on the sliding arm. With
other prisoners outside the terminal for inter potensiometer 1MW akan 1MW always, there is no problem
how do we turn the control elements. Prisoners between the sliding sleeve and a terminal outside
can be changed from the minimum price that is zero ohm to a maximum price equal to
potensiometer the full price. Number of prisoners between the arm and slide each
terminal must be outside with the big full potensiometer custody. When prisoners of arms
slide and a contact outside increases, then slide the sleeve between the detainees and one of
terminal outside the other will be reduced.
Various fixed resistor:
a. Metal Film resistor
b. Metal Oxide resistor
c. Carbon Film resistor
d. Ceramic Encased Wirewound
e. Economy Wirewound
f. Zero Ohm Jumper Wire
g. I P S resistor Network
Various variable resistor:
a. Potensiometer:
A.1. Linier
A.2. Logaritmis
b. Trimer-Potensiometer
c. Thermister:
c.1. NTC (Negative Temperature Coefisient)
c.2. PTC (Positive Temperature Coefisient)
d. DR
e. Vdr
Characteristics of Various Types resistor
Characteristics of the various resistor is influenced by the materials used. Resistansi
resistor composition is not stable due to the influence of temperature, if the temperature rise resistansi down.
Less appropriate when used in a series of high voltage electrical currents and large.
Resistansi a resistor between the different composition of the fact resistansi nominalnya. If
difference value of up to 10% less well on the series that require high accuracy.
Resistansinya variable resistor change in accordance with the change of settings.
Variable resistor with the mechanics, by the light, the setting temperature by
temperature or other settings.
If the value changes, resistansi potensiometer comparable position with the contact gesernya
then this kind potensiometer called potensiometer linier. But if the value changes
resistansinya not comparable with the contact gesernya called potensio logaritmis.
In theory a resistor has stated resistansi akan but purely on the
practice, an additional resistor has the nature of the inductive nature and kapasitif. In the
essentially low value resistor tends to have the nature of inductive and high-valued resistor
resistor has the nature of additional kapasitif.
Temperature has a significant influence over a barrier. In his penghantar
a free electron which is very huge, and any heat energy charged
on it will have little impact on the total number of carrier-free. In fact
heat energy will only increase the intensity of the random movement of particles that are in
material which makes it increasingly difficult for the general flow of electron in any one direction
determined. The result is good for penghantar, increased temperature akan
the increase in detention rates. As a result, penghantar have positive temperature coefficients.
Cash? hot
HR = I2Rt [Joule]
Q = mc (T-Ta)
Q = 0:24 R i2 t [calorie]
And Font Color Code On resistor
Not all resistansi value of a resistor included with the symbol
but with the color code ring. A large ring in the color code of each resistor
4 and also have a number 5.
Resistansi that has 5 rings of the ring 1, 2 and 3 is the digit ring, ring
4 as the multiplier and the tolerance is 5 rings. Resistansi that have a ring consisting of 4
ring 1, 2 as the digit is, the ring is the ring factor 3 and 4 as a tolerance ring.

Fixed resistor
Resistor is a fixed resistor with a value of fixed obstacles. Resistor has
power limits the ability for example: 1 / 6 w. 1 / 8 w. ¼ w, ½ w, w 1, w 5, so that means that the resistor is only
can be operated with maximum power in accordance with the capacity charged.

No Fixed resistor (variable)
Resistor is not fixed resistor value constraints that can be changed or not
fixed. Type that is sliding barriers, Trimpot and Potensiometer.
a. Trimpot
The resistor value constraints can be changed in a way to play porosnya
using a screwdriver. To know the value of the barrier can be a trimpot
seen from the number listed on the agency's trimpot.
b. Potensiometer
The resistor value constraints can be changed with the rotating axis of
already available. Potensiometer basically the same as the functional trimpot.

And Font Color Code On resistor
Not all resistansi value of a resistor included with the symbol
but with the color code ring. A large ring in the color code of each resistor
4 and also have a number 5.
Resistansi that has 5 rings of the ring 1, 2 and 3 is the digit ring, ring
4 as the multiplier and the tolerance is 5 rings. Resistansi that have a ring consisting of 4
ring 1, 2 as the digit is, the ring is the ring factor 3 and 4 as a tolerance ring.



5 Mario Nabil - Free Full Downloads Software, Games, Movies, Article: Resistor Resistor is the basic electronic components used to limit the number of flow that flows in a series. In accordance with the name and the re...

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