Electrical sec 1 div 5

Color code

A combination of color signatures in a set order, which is recognizable by a vision system.

Short circuit

A branch in a circuit with zero or very low resistance

Metal film resistor

A resistor that consists of a metal film of a selected metal alloy or carbon deposited in a vacuum on a small ceramic cylinder to which leads are attached.

Variable resistor

A resistor whose resistance can be changed.

Voltage divider

A series circuit that is used to produce a voltage source of desired magnitude from a higher-voltage battery; often is used with sensors such as photoresistors.

Potentiometer

A switch that can provide variable motion control. It can vary the resistance within the switch, which affects both the current and voltage flowing out of the switch.

Wire-wound resistors

Fixed resistors that are made by winding a piece of resistive wire around a ceramic core. Generally used when a high-power rating is needed.

Carbon film resistor

Resistor that is made by coating a ceramic rod with a film of carbon instead of metal.

Composition carbon resistor

Resistors made from a compound of carbon graphite and a resin bonding material. The proportions determine the value of resistance. Inexpensive.

Tolerance

acceptance

Fixed resistors

have a resistance that cannot be changed

Pot

to have power

Rheostat

variable resistor