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Electronic Knowledge | Resistor

一、Definition

Resistor is an electrical quantity that measures how the device or material reduces the electric current flow through it.

The resistance is measured in units of ohms (R).

 

二、Function

1.1 Resistance limits the current, or in several cases, regulates the current, if the voltage source is providing a constant voltage.
1.2 as a voltage divider
Almost all voltage (V) values ​​can be obtained by connecting the appropriate value resistors.

 

三、How to order?

Key points: Types of resistor? DIP or SMD? Dimensions? Resistivity? Tolerance value? Temperature coefficient?

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