What is Resistance?

The literal meaning of the resistor , shown in the challenge against something . Showing resistance to the circuit element current limiting circuit makes it a challenge to current flow . Transformed into electrical energy is spent on the resistance to heat .

Ohm resistor unit '' '' ' stop. Ohm 's submultiple ; pikoohm , nanoohm , mikroohm , Milliohm , while the upper floors ; kilohms , megohms and gigaohm ' stop.

Circuits, resistors , limiting the current passing through the circuit to keep a certain value , divide by reducing the supply voltage of the circuit to ensure the operation of the other elements , high currents prevent damage to the sensitive circuit elements , load (receiver) is used for purposes such as to make the task to achieve energy Veis .

Types of resistance are made by Article

Mixtures of carbon Resistances: This type resistors pulverulent filler and resin glue mixture with carbon is produced. Values ​​of tolerance and resistance to high rates of carbon resistors, variable resistors ages .

Carbon resistors are suitable for making large value resistors . Carbon resistors are used, and the forces of a small current circuits 1/10 W, 5 W , respectively. Carbon resistors values ​​are coded color code .

Film Resistors ( Thin Layer Resistors ) :

Resistive film resistors for electric current of a substance , obtained by coating a ceramic rod around resistances. Film resistors , carbon film resistors, metal film resistors, metal oxide film resistors, metal film resistors and a mixture of glass cermet (ceramic- metal) are the kinds of movies , such as resistors .

Film resistor tolerance (error ) values ​​are very small , such as rates of 1-2% . Values ​​and high stability under load due to the low tolerance precision film resistors built electronic circuits often preferred edilir.Tel Roll ( Stone) Resistances:

Stone resistors; chromium-nickel , nickel - silver, constantan , tungsten , manganese and so on. Wires made ​​of materials , porcelain , bakelite , asbestos wrapping on a substance that is produced by heat-resistant , such as resistances. Large stone resistors are strong , so they are conveniently employed in high current circuits . For the same reason the higher will be the heat emitted from the stone resistances of resistors in the circuit close to this type of electrolytic capacitor , diode, transistor , integrated and so on. elements that are susceptible to heat should not be installed .

Suitable for small-value resistors, resistors made ​​of stone . Written in stone , and the forces of the resistance value of 2 W and 225 W between gövdeklerinde .

Resistance Connection Types

Parallel connection Parallel connection formula

1 / RToplam = ( 1 / R1 ) + ( 1 / R 2) + ( 1 / R 3) + ( 1 / R4 ) shaped. All values ​​are the same , so before transactions ohm , Kohm or converted to the type of Mohm . 10 Kohm = 10,000 ohms , 2.2 Kohm = 2.200 ohms . The formula is applied to the adjacent resistors 1 / RToplam = 0.01355 RToplam again according to the equation = 1 / 0.01355 ohms that is equal to 73.8 .

Serial port: left side picture shows four state resistance connected in series with each other . The formula for calculating the value of the total resistance at the ends A and B , RToplam = R1 + R2 + R3 + R4 form. So 100 ohms + 330 ohms + 10 = 12 430 Kohm Kohm + 2.2 Kohm ' a that is equal to 12,430 ohms .