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Topic: Resistor


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In the News (Sun 19 Nov 17)

  
  Antisurge Resistors, Fusible, Wirewound, Temperature Sensing Resistor
Pacific Resistor Co. has been manufacturing high quality wirewound resistors for Commercial and Military application for over 47 years.
The confidence level that Pacific Resistor has earned from these companies is such that most do not perform inspection on Pacific Resistor's products.
Pacific Resistor's products are on board whether they're antisurge, fusible, wirewound, surface mount, precision, load, power, temperature or current sensing resistors.
www.pacificresistor.com   (212 words)

  
  Resistor Color Code, Tutorial, Formulas, Georg Simon Ohm history, What is "Rho".
Resistor Color Code, Tutorial, Formulas, Georg Simon Ohm history, What is "Rho".
These body colors are white, and blue (and sometimes composite green depending on where you live) and are used to indicate non-flammable and/or fusible resistor types.
In the case of surface mount resistors; since they are so tiny they feature the same coding as on capacitors.
www.uoguelph.ca /~antoon/gadgets/resistors/resistor.htm   (2251 words)

  
  Resistor - MSN Encarta
Resistors are usually placed in electric circuits, which are devices formed when current moves through an electrical conductor (a material that allows the current to flow without much resistance, such as copper wire) and when the conductor makes a complete loop.
Resistors are often color coded by three or four color bands that indicate the specific value of resistance.
For example, the heating element in a household cooking range is a resistor, as is the tungsten filament in a common incandescent lamp.
encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761586035   (740 words)

  
  Resistor - Wikipedia, the free encyclopedia
Resistors are built into integrated circuits as part of the fabrication process, using the semiconductor as the resistor.
Resistors use specific values, which are determined by their tolerance.
Resistors are often marked with their tolerance (maximum expected variation from the marked resistance).
en.wikipedia.org /wiki/Resistor   (2178 words)

  
 Resistors
The size (fl part) of the resistor network which I have is as follows: For the type with 9 leads, the thickness is 1.8 mm, the height 5mm, and the width 23 mm.
Semi-fixed resistors are used to compensate for the inaccuracies of the resistors, and to fine-tune a circuit.
is a ceramic (or cement) resistor of 5W and is the height of 9 mm, 9 mm depth, 22 mm width.
www.interq.or.jp /japan/se-inoue/e_resistor.htm   (1820 words)

  
 Resistors   (Site not responding. Last check: )
Resistors are the most commonly used component in electronics and their purpose is to create specified values of current and voltage in a circuit.
In place of a single resistor with specified dissipation, another one with the same resistance and higher rating may be used, but its larger dimensions increase the space taken on a printed circuit board as well as the added cost.
resistor is 12V, the wattage dissipated by the resistors is:
www.mikroelektronika.co.yu /english/product/books/keu/01.htm   (2758 words)

  
 Resistor Mathematics - Microwave Encyclopedia - Microwaves101.com
Some other things to consider when designing resistors are that because of skin depth, the RF sheet resistance might be higher than the DC sheet resistance (but usually it is very close), and the tolerance of the resistor due to edge definition and other things might force you to laser trim it.
In this case you want the resistor material to be a fraction of a skin depth, while the gold to be at least three skin depths.
Thermistors are resistors that are built specifically to exploit the temperature coefficient, and are often used as temperature control elements.
www.microwaves101.com /encyclopedia/resistormath.cfm   (891 words)

  
 resistor. The Columbia Encyclopedia, Sixth Edition. 2001-05
Resistors are normally designed and operated so that, with varying levels of current, variations of their resistance values are negligible (see resistance).
They are available in several common forms: wirewound resistors are formed from windings of fine wire; film resistors, commonly found in consumer electronic devices, use lengths of carbon or metal film deposited on a resistive base; and carbon-composition resistors use a bonded mass of carbon powder with a phenolic binder.
Resistors absorb power from a circuit and convert it into heat; they are normally rated for the maximum amount of power that they can safely handle.
www.bartleby.com /65/re/resistor.html   (186 words)

  
 IdentificaĆ§Ć£o de Resistor
The 4 band resistor has a gold tolerance, or 5%, meaning that the true value of the resistor could be 5% more or less than 27000 Ohms, allowing values between 25650 to 28350 Ohms.
To simplify the writing of large resistor values, the abbreviations K and M are used for one thousand and one million.
Resistors in these groups are less common, and tend to have a better tolerance rating.
www.angelfire.com /magic2/raphael/Resistor.htm   (735 words)

  
 Resistor Summary
Some resistors are cylindrical, with the actual resistive material in the centre (composition resistors, now obsolete) or on the surface of the cylinder (film) resistors, and a conducting metal lead projecting along the axis of the cylinder at each end(axial lead).
Resistors are manufactured in values from a few milliohms to about a gigaohm; only a limited range of values from the IEC 60063 preferred number series are commonly available.
Standard-tolerance SMD resistors are marked with a three-digit code, in which the first two digits are the first two significant digits of the value and the third digit is the power of ten.
www.bookrags.com /Resistor   (2818 words)

  
 Tutorial for Learning about Resistor Color Codes   (Site not responding. Last check: )
Turn the resistor so that the gold or silver stripe is at the right end of the resistor.
A gold stripe means the value of the resistor may vary by 5% from the value given by the stripes.
When two resistors are connected in series, as shown in Figure 1, the new resistance between points A and B is R1 + R2.
www.proaxis.com /~iguanalabs/resistors.htm   (896 words)

  
 Reference.com/Encyclopedia/Resistor
A resistor is a two-terminal electrical component that creates an electrical potential difference across its terminals that is proportional to the current passing through it.
Standard resistors are manufactured in values from a few milliohms to about a gigohm; only a limited range of values called preferred values are available.
Standard-tolerance SMT resistors are marked with a three-digit code, in which the first two digits are the first two significant digits of the value and the third digit is the power of ten.
www.reference.com /browse/wiki/Resistor   (1699 words)

  
 Resistor   (Site not responding. Last check: )
A resistor is an electrical component designed to an electrical resistance that is independent of the current flowing through it.
Resistors are often with their tolerance (maximum expected variation from marked resistance).
Although resistors have specified voltage and current ratings are rated with a maximum power which is determined by the physical Common power ratings for carbon composition and resistors are 1/8 watt 1/4 watt and 1/2 watt.
www.freeglossary.com /Resistor   (1179 words)

  
 [No title]
Transene conformal resistor coatings are specially formulated from insulation materials designed to pass rigid, high reliability performance standards for military and space applications.
The power output of a lamp, resistor, or other component, is defined as the rate of change of electrical energy to heat, light, or some other form of energy.
The function of the resistor is to reduce electrical noise generated by the ignition system.
www.lycos.com /info/resistor--miscellaneous.html   (389 words)

  
 Resistor
Resistors can be made from many different materials, but the most common is carbon composition (graphite plus binding agents).
Most resistors have some essentially static value of resistance ('though all resistors are somewhat temperature sensitive, but that's another story...); other types are made, however.
Photoresistors, as their name suggests, are resistors whose resistance is a function of the amount of light falling on them.
encyclobeamia.solarbotics.net /articles/resistor.html   (313 words)

  
 Terminated Shortwave Antenna -- antenna special on hard-core-dx.com
The load (shown as R in the figure) is a standard carbon resistor of 1/2 watt power (do not use a wire wound resistor because it will act more like an inductor rather than a resistor at radio frequencies).
For a resistor of 1200 ohms, a transformer turns ratio of 5 to 1 is used, to provide a match to 50 ohm coax cable.
It should also be mentioned the resistor value will always be an approximation to a flat response, so that no one value will be best for all the SWL bands you may listen to.
www.hard-core-dx.com /nordicdx/antenna/wire/babybev.html   (1587 words)

  
 What is resistor? - a definition from Whatis.com
A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit.
Resistors can also be used to provide a specific voltage for an active device such as a transistor.
All other factors being equal, in a direct-current (DC) circuit, the current through a resistor is inversely proportional to its resistance, and directly proportional to the voltage across it.
searchsmb.techtarget.com /sDefinition/0,,sid44_gci213522,00.html   (358 words)

  
 Resistor Combinations - Series and Parallel
We know that the resistors are in series because all of the current that flows out of the distribution box through the first wire also flows through the light bulb and back through the second wire, thus meeting our condition for a series connection.
resistor in order to limit the current to 0.5 amps when 110 volts is placed across the two resistors in series.
Two resistors or any two devices are said to be in parallel when the same voltage physically appears across the two resistors.
www.facstaff.bucknell.edu /mastascu/elessonshtml/Resist/Resist2.html   (1950 words)

  
 resistors   (Site not responding. Last check: )
In other circuits, resistors are used to direct current flow to particular parts of the circuit, or may be used to determine the voltage gain of an amplifier.
You are likely to use low value resistors and metal film resistors on some occasions and it is useful to know how to read their codes.
Some resistors are designed to pass very large currents and are cased in aluminium with fins to increase surface area and promote heat loss.
www.doctronics.co.uk /resistor.htm   (2132 words)

  
 Define resistor - a definition from Whatis.com
A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit.
Resistors can also be used to provide a specific voltage for an active device such as a transistor.
All other factors being equal, in a direct-current (DC) circuit, the current through a resistor is inversely proportional to its resistance, and directly proportional to the voltage across it.
whatis.techtarget.com /definition/0,,sid9_gci213522,00.html   (275 words)

  
 Guide to reading resistors   (Site not responding. Last check: )
Another example: if you saw a resistor marked 4753, you would interpret that to be 475x10^3 or 475000 or 475k (Note that with 3 significant digits, this 475k resistor was not a 5% resistor).
In a "5%" tolerance series each resistor in the series is nominally 10% away from its neighbor, so theoretically, any resistor could be found in a large parts box since the value desired is within 5% of a standard value.
Put 10 striped resistors on the table and 10 numbered resistors on the table and anyone with some experience will be able to A) find a particular value they are looking for or B) sort the resistors much faster with the striped versions.
leonardo.caltech.edu /~ee14/resistor_guide.html   (732 words)

  
 Resistor Networks
Resistor networks are not very exciting to build, so much of our work will be theoretical.
Just as networks of resistors between two nodes may be replaced by a single equivalent resistance, entire circuits can be replaced by a combination of a single resistor and an ideal power source in two ways.
Most resistors you will encounter are marked with a set of bands, according to a standard color code, which you can use to determine their resistances.
webpages.ursinus.edu /lriley/ref/circuits/node2.html   (788 words)

  
 Resistor Color Codes & Primer
Resistors are never the exact value that the color codes indicate.Therefore manufacturers place a tolerance color band on the resistor to tell you just how accurate this resistor is made.
To determine the exact range that the resistor may be, take the value of the resistor and mutiply it by 5,10, 0r 20%.
That is the number that the resistor may go either way.
www.electronics-lab.com /articles/basics/theory/resistor_codes.htm   (448 words)

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