10 Facts about Resistors

Post On: February 25, 2017

The passive two-terminal electrical component is explained on Facts about Resistors. It is functioned as a circuit element used for electrical resistance. It has various functions for electronic circuits. The resistors can divide voltages, decrease the current flow, terminate transmission lines, bias active elements and modify signal levels. The people who deal with electronic circuits and electrical networks must be familiar with resistors for they are a common element.

Facts about Resistors 1: the fixed resistors

The change of resistance is determined by the operating voltage, time and temperature in fixed resistors.

Facts about Resistors

Facts about Resistors

Facts about Resistors 2: the high power resistors

The test loads for generators, power distribution system and motor controls usually feature the high power resistors because the many watts of the electrical power can be dissipated into heat.

Facts about Resistors 3: the variable resistors

If you are interested to use resistors for sensing devices and circuit elements, pick variable resistors. They are often used for chemical activity, force, humidity, light, heat, lamp dimmer and volume control.

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Resistor Pic

Resistor Pic

Facts about Resistors 4: the electrical function

The resistance of resistors will determine or specify its electrical function. The technology used for producing the resistor will determine the level of excess noise, unwanted inductance and temperature coefficient.

Facts about Resistors 5: the high power ratings

If you deal with resistors equipped with higher power ratings, you need to think about the heat sinks. The resistors must be larger.


Facts about Resistors 6: CCR

CCR stands for carbon composition resistors. The plastic or paint is used to protect the resistor body. The mixture of powdered carbon and ceramic are used to produce the resistive element.

Facts about Resistors 7: the usage of CCR

CCR is often used in welding controls and power supplies. Most applications do not use CCR due to the expensive price.

Resistors Facts

Resistors Facts

Facts about Resistors 8: carbon pile resistors

The carbon pile resistors have wider applications than CCR.  The radio transmitter and automotive batteries often feature this resistor. The household appliances such as hand-held mixers and sewing machine, which require speed control for small motors, also feature the resistor.

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Facts about Resistors 9: the thick film resistors

In 1970s, the thick film resistors gained their popularity. It can be found in the present day surface mount device resistors. Compared to the thin film, it is 1000 times thicker.

Resistors

Resistors

Facts about Resistors 10: the production of metal film resistor

The nickel chromium is used for coating the metal film resistors.

Do you have questions on facts about resistors?