Resistor In Electronical Circuit


Resistor is a component to inhibit the rate of electrical current in an electronic circuit. The function of resistors in electronic circuits have a purpose of reducing the flow, stabilizes the electric current when it flows should be divided into other components and adjust the electrical signal.

A Formula To Measure Resistance Components Resistors:

Resistance (Ohm) = Voltage (Volt) / Amphere (Amp)

Example: Battery = 12 Volt, Amp Flow = 0:04, Resistance =?

Resistance = 12volt / 0.04Amp = 300 Ohm. So Component resistor has a resistance of 300 Ohm.

Symbol of Resistor in Circuits:

Types of Resistors

  • Fixed Resistors

Fixed Resistors is a type of resistors with resistance or its resistance value is fixed / can not be changed. Miscellaneous Fixed Resistors components as follows:

Resistor Carbon
The main ingredient of this resistor is charcoal or carbon, a type of resistor that is outdated because it has been replaced with another type of resistor. Has a major drawback, namely nois high, its effect when used in the audio will result in noise / noise.

Resistors Carbon Film
Is the development of carbon resistors, compared Resistor Carbon Film Resistor has the advantage that has a lower noise.

Resistors Metal Film
Has a shape similar to a carbon resistors, but it has a very low noise when compared with film resistors and carbon. Having a power surge tolerance of 1% to 5% so suitable for use in the series of Radio, Multimeter and tools that require high accuracy.

Resistor Wire
The main ingredient Nikelin wire, has a larger shape when compared with other types of resistors. Electronic circuits used for the upper middle.

Resistor NIST
Stands for National Institute of Standards and Technology, a resistor with a very high accuracy and the highest of any other type of resistor. By having power surges tolerance value of 0001% makes this resistor to be the best.

Resistor SMD
Resistor type commonly used in SMD circuit, which requires components - components are small and neat.

  • Variable Resistors (Resistor The value is subject to change)

Variable Resistor is a component type resistor with resistance or its resistance value can be changed. Miscellaneous components Variable Resistors as follows:

Resistor Potentiometer
Type of resistor resistance values ​​can be changed by rotating or sliding contacts.

Resistor NTC and PTC
NTC (Negative Temperature Coefficient) and PTC (Positive Temperature Coefficient) is a type of resistor whose resistance value can change if the temperature around the turns. NTC will increase the resistance if the temperature rises, the PTC resistance're going down.

Resistor LDR
LDR (Light Dependent Resistor) is a resistor that tilapia resistance will change if exposed to light. LDR will rise if Terken light resistance, commonly used in street lighting.

Resistor VDR (Varistor)
VDR (Voltage Dependent Resistor) is a type of resistor that changes resistance nila if the value of the voltage change. When a DC current is passed to some Resistor VDR with a series circuit, current would flow across a string. This is because resistance VDR modestly if the voltage is low and vice versa.

Resistor Humistor
Humistor is a type of resistor whose resistance value will change if the air around the kelebapan changed. Commonly encountered in the series of Air Conditioner,

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