There are many different types of resistors you can find. In addition the power rating of a high power wire wound resistor is 500 watts and the available resistance value of these resistors are is 01 ohm 100k ohms.
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Thick film resistors became popular during the 1970s and most smd surface mount device resistors today are of this type.
Types of resistors wikipedia. These are primarily aluminum electrolytic capacitors and tantalum as well as some film capacitors and class 2 ceramic capacitors. System of electromagnetic units. The unit was based upon the ohm equal to 10 9 units of resistance of the cgs.
The international ohm is represented by the resistance offered to an unvarying electric current in a mercury column of constant cross sectional area 1063 cm long of mass 144521 grams and 0 0c. The types of capacitors used for power applications have a specified rated value for maximum ripple current. These resistors consist of a fixed resistor element and a slider which taps onto the main resistor element.
Most resistors used in electronics today are carbon resistors. An electronic device so made is called a surface mount device smdin industry it has largely replaced the through hole technology construction method of fitting components with wire leads into holes in the circuit board. The resistive element of thick films is 1000 times thicker than thin films 12 but the principal difference is how the film is applied to the cylinder axial resistors or the surface smd resistors.
Gecu photoconductors are among the best far infrared detectors available and are used for infrared astronomy and infrared spectroscopy. They are all made with a resistive material encased in a non conductive material such as plastic. The ohmic value of these types of resistors is 1 ohm up to 200k ohms or more and can be operated safely up to 3500c.
Lead sulfide pbs and indium antimonide insb ldrs light dependent resistors are used for the mid infrared spectral region. Fixed resistors are usually made of carbon encased in a plastic cylinder with a connecting wire on either end. A very high resistance at low voltage below the trigger voltage and very low resistance at high voltage above the trigger voltage.
There are many different types of resistor which can be used in different circumstances and these different types of resistor are described in further detail below. Other types of resistors edit a metal oxide varistor mov is a special type of resistor that changes its resistance with rise in voltage. Surface mount technology smt is a method in which the components are mounted or placed directly onto the surface of a printed circuit board pcb.
The generic term film resistor consist of metal film carbon film and metal oxide film resistor types which are generally made by depositing pure metals such as nickel or an oxide film such as tin oxide onto an insulating ceramic rod or substrate.
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