Resistors

 

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Resistors


Wirewound Resistor

A Wirewound resistor is made with a conductive wire of a high resistivity. This wire is made of a special alloy, and it is wound on a support tube of refractory material such as ceramics, porcelain, etc.

What is Electrical Resistivity?

Electrical resistivity [ρ] (rho) is a characteristic of materials and has ohm-meter unit. Resistivity indicates how much the material opposes the flow of electric current.

Temperature effect on resistance

Temperature effects on resistance. The value of the resistance of a material varies with temperature change. For this reason, the circuit containing these elements should work in controlled environment

Series/Parallel Resistor Reduction

Series/Parallel Resistor Reduction. Resistors reduction can be done, making some simplifications using resistors in series and resistors in parallel formulas.

Resistor, Resistance and Conductance

A Resistor is an electrical element that causes opposition to the flow of the electric current.  Using the Ohm’s Law V = I x R we can find the voltage on the resistors terminals.

LDR – Photoresistor

What is an LDR – Photoresistor? LDR (Light Dependent Resistor) is light sensitive resistor whose resistance changes with the light intensity that falls upon it.

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