RESISTORS [Resistance]: Variety

RESISTORS [Resistance]: Variety

• A wide range of resistors and resistance apparatus for use in the science laboratory including:
  Resistance boxes-coils-units  / Dial types / Container / Mounted / Variable.

(Wikipedia excerpt: ..."A resistor (R) is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, (R) are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. High-power (R) that can dissipate many watts of electrical power as heat may be used as part of motor controls, in power distribution systems, or as test loads for generators.

Fixed (R) have resistances that only change slightly with temperature, time or operating voltage. Variable (R) can be used to adjust circuit elements (such as a volume control or a lamp dimmer), or as sensing devices for heat, light, humidity, force, or chemical activity. (R) are common elements of electrical networks and electronic circuits and are ubiquitous in electronic equipment. Practical (R) as discrete components can be composed of various compounds and forms. (R) are also implemented within integrated circuits.

The electrical function of a (R) is specified by its resistance: common commercial (R) are manufactured over a range of more than nine orders of magnitude. The nominal value of the resistance falls within the manufacturing tolerance, indicated on the component....")