Uses of Resistor with its Practical Applications ...

27, May. 2024

 

Uses of Resistor with its Practical Applications ...

Uses of Resistor

For more information, please visit film type resistor.

We know that one of the main uses of resistor is to control the flow of current. In a resistor, electrons have a collision with ions which slows down the flow of electricity and lowers the current and also produces heat. If a resistor is said to have high resistance then it means less current flows in it for the given voltage.

Some applications and uses of resistor are listed below:

  • Circuit functions
  • Dividing voltage
  • Heating
  • Frequency and timing
  • LEDs and transistor

Resistor usage in Circuit Functions

There are various types of resistors that work according to the usage range. In that, we can set the resistance by using a knob kind of feature. Changing resistance will affect the flow of current inside the circuit. For example, this type of resistor is used in controlling the speed of a motor, pitch of a musical tone, loudness of an amplifier, etc.

Resistor is used for Diving Voltage

Dividing the voltage works when some components need to work in a much lesser voltage than the supplied input voltage. Connecting the resistors in a series will help to drop the voltage across each resistor equally, thus, assisting the appliances smoothly which works in those conditions.

It is also used for Heating

Because of the nature of generating heat when conducting current, resistors are used in a heater, toaster, microwave, electric stove, and many more heating appliances. In a light bulb, the metal filament glows white-hot due to the very high temperature produced from the resistance when electricity is passed through it.

Uses of Resistor to function in particular Timing and at a certain Frequency

Like in a light flasher, electronic sirens, blinking lights used in airplanes or tall towers which acts as a collision avoidance measure. They work on the principle of filling up current to a certain time and then discharge light, in here, the resistor decides how much current has to be passed according to the time allotted. If resistance increases, the time for discharging current in the circuit increases.

Resistors used in LEDs and Transistors

Too much current passed inside a LED or transistors can be dangerous because they are very sensitive to electric current. The use of a resistor in the circuit will help the LEDs and transistors and other types of semiconductors to function in the desired current range ideal for them.

These were some applications of Transistors. If you wish to find out more, download BYJU'S The Learning App.

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Frequently Asked Questions ' FAQs

Q1

What is a resistor?

A resistor is a two-terminal electrical component that provides electrical resistance. In electronic circuits, resistors are predominantly used to lower the flow of current, divide voltages, block transmission signals, and bias active elements.

Contact us to discuss your requirements of Wirewound Resistors for High-Power Applications. Our experienced sales team can help you identify the options that best suit your needs.

Q2

What are the two types of linear resistors?

Fixed resistors and variable resistors are the two types of linear resistors.

Q3

What are the main types of fixed resistors?

Wire wound resistors, thin-film resistors, and carbon composition resistors are the main types of fixed resistors.

Q4

What are the main types of variable resistors?

Potentiometer, thermostat, and trimmer resistor are the main types of variable resistors.

Q5

What is the use of resistors in the case circuits with LEDs?

Excess current can be fatal to LEDs because they are extremely sensitive to variations in electric current. In this case, resistors can be used to control the electric current that flows through the circuit, helping LEDs and other semiconductors to work at the ideal current ranges.

What Are Resistors Used For?

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One of the most common uses of a resistor is to limit th","noIndex":0,"noFollow":0},"content":"<p>Resistors are among the most popular electronic components around because they're simple yet versatile. One of the most common uses of a resistor is to limit the amount of current in part of a circuit. However, resistors can also be used to control the amount of voltage provided to part of a circuit and to help create timing circuits.</p>\n<h2 id=\"tab1\" >Limiting current</h2>\n<p>The circuit in the following figure shows a 6-volt battery supplying current to a light-emitting diode (LED) through a resistor (shown as a zigzag). LEDs (like many other electronic parts) eat up current like a kid eats candy: They try to gobble up as much as you give them. But LEDs run into a problem ' they burn themselves out if they draw too much current. The resistor in the circuit serves the useful function of limiting the amount of current sent to the LED (the way a good parent restricts the intake of candy).</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image0.jpg\" height=\"297\" alt=\"The resistor limits the amount of current, <i>I</i>, flowing into sensitive components, such as the\" width=\"535\"/><div class=\"imageCaption\">The resistor limits the amount of current, <i>I</i>, flowing into sensitive components, such as the light-emitting diode (LED) in this circuit.</div></div>\n<p>Too much current can destroy many sensitive electronic components ' such as transistors and integrated circuits. By putting a resistor at the input to a sensitive part, you limit the current that reaches the part. (But if you use too high a resistance, you'll limit the current so much you won't see the light, although it's there!) This simple technique can save you a lot of time and money that you would otherwise lose fixing accidental blow-ups of your circuits.</p>\n<p>You can observe how resistors limit current by setting up the circuit shown and trying out resistors of different values.</p>\n<p>Here's what you use to build the LED-resistor circuit:</p>\n<ul class=\"level-one\">\n <li><p class=\"first-para\">Four 1.5-volt AA batteries</p>\n </li>\n <li><p class=\"first-para\">One four-battery holder (for AA batteries)</p>\n </li>\n <li><p class=\"first-para\">One battery clip</p>\n </li>\n <li><p class=\"first-para\">One</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image1.png\" height=\"23\" alt=\"image1.png\" width=\"130\"/>\n<p class=\"child-para\">(identified by yellow-violet-brown stripes and then a fourth stripe which may be gold, silver, black, brown, or red)</p>\n </li>\n <li><p class=\"first-para\">One 4.7</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image2.png\" height=\"23\" alt=\"image2.png\" width=\"96\"/>\n<p class=\"child-para\">(yellow-violet-red and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">One 10</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image3.png\" height=\"23\" alt=\"image3.png\" width=\"96\"/>\n<p class=\"child-para\">(brown-black-orange and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">One 47</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image4.png\" height=\"23\" alt=\"image4.png\" width=\"96\"/>\n<p class=\"child-para\">(yellow-violet-orange and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">One LED (any size, any color)</p>\n </li>\n <li><p class=\"first-para\">Three insulated alligator clips <i>or</i> one solderless breadboard</p>\n </li>\n</ul>\n<p>Use alligator clips or a solderless breadboard to set up the circuit (see the following figure), starting with the 470 resistor. Remember to orient the LED correctly, connecting the shorter lead of the LED to the negative battery terminal. Don't worry about the orientation of the resistor; either way is fine. Note how brightly the LED shines. Then remove the resistor and replace it with the other resistors, one at a time, increasing the amount of resistance each time. Did you notice that the LED shines less brightly each time? That's because higher resistances restrict current more, and the less current an LED receives, the less brightly it shines.</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image5.jpg\" height=\"195\" alt=\"Two ways to set up the resistor-LED circuit.\" width=\"535\"/><div class=\"imageCaption\">Two ways to set up the resistor-LED circuit.</div></div>\n<p>The following figure shows a parallel circuit in which each branch contains a different value of resistance. For higher values of resistance, the current that passes through that branch is restricted more, so the LED in that branch emits less light.</p>\n<div class=\"imageBlock\" style=\"width:263px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image6.jpg\" height=\"400\" alt=\"Higher values of resistance restrict current more, resulting in less light emitted from the LEDs.\" width=\"263\"/><div class=\"imageCaption\">Higher values of resistance restrict current more, resulting in less light emitted from the LEDs.</div></div>\n<h2 id=\"tab2\" >Reducing voltage</h2>\n<p>Resistors can be used also to reduce the voltage supplied to different parts of a circuit. Say, for instance, you have a 9-volt power supply but you need to provide 5 volts to power a particular integrated circuit you're using. You can set up a circuit, such as the one shown here, to divide the voltage in a way that provides 5 V at the output. Then ' voilà ' you can use the output voltage, <i>V</i><i><sub>out</sub></i>, of this <i>voltage divider</i> as the supply voltage for your integrated circuit.</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image7.jpg\" height=\"305\" alt=\"Use two resistors to create a voltage divider, a common technique for producing different voltages \" width=\"535\"/><div class=\"imageCaption\">Use two resistors to create a voltage divider, a common technique for producing different voltages for different parts of a circuit.</div></div>\n<p>To observe the voltage divider in action, set up the circuit shown by using the following parts:</p>\n<ul class=\"level-one\">\n <li><p class=\"first-para\">One 9-volt battery</p>\n </li>\n <li><p class=\"first-para\">One battery clip</p>\n </li>\n <li><p class=\"first-para\">One 12</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image8.png\" height=\"23\" alt=\"image8.png\" width=\"96\"/>\n<p class=\"child-para\">(brown-red-orange and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">One 15</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image9.png\" height=\"23\" alt=\"image9.png\" width=\"96\"/>\n<p class=\"child-para\">(brown-green-orange and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">Three insulated alligator clips <i>or</i> one solderless breadboard</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image10.jpg\" height=\"192\" alt=\"Two ways to build the voltage divider circuit.\" width=\"535\"/><div class=\"imageCaption\">Two ways to build the voltage divider circuit.</div></div>\n </li>\n</ul>\n<p>Next, use your multimeter set to volts DC to measure the voltage across the battery and across the 15</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image11.png\" height=\"23\" alt=\"image11.png\" width=\"96\"/>\n<p>as shown. Measurements show that the actual battery voltage is 9.24 V and <i>V</i><i><sub>out</sub></i> is 5.15 V.</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image12.jpg\" height=\"142\" alt=\"Measure the total voltage supplied by the battery (left) and the voltage across the resistor (right\" width=\"535\"/><div class=\"imageCaption\">Measure the total voltage supplied by the battery (left) and the voltage across the resistor (right).</div></div>\n<h2 id=\"tab3\" >Controlling timing cycles</h2>\n<p>You can also put a resistor to work with another popular component ' a capacitor ' to create predictable up and down voltage swings. You'll find the resistor-capacitor combo helps you create a kind of hourglass timer, which comes in handy for circuits that have time dependencies (for instance, a three-way traffic light).</p>","description":"<p>Resistors are among the most popular electronic components around because they're simple yet versatile. One of the most common uses of a resistor is to limit the amount of current in part of a circuit. However, resistors can also be used to control the amount of voltage provided to part of a circuit and to help create timing circuits.</p>\n<h2 id=\"tab1\" >Limiting current</h2>\n<p>The circuit in the following figure shows a 6-volt battery supplying current to a light-emitting diode (LED) through a resistor (shown as a zigzag). LEDs (like many other electronic parts) eat up current like a kid eats candy: They try to gobble up as much as you give them. But LEDs run into a problem ' they burn themselves out if they draw too much current. The resistor in the circuit serves the useful function of limiting the amount of current sent to the LED (the way a good parent restricts the intake of candy).</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image0.jpg\" height=\"297\" alt=\"The resistor limits the amount of current, <i>I</i>, flowing into sensitive components, such as the\" width=\"535\"/><div class=\"imageCaption\">The resistor limits the amount of current, <i>I</i>, flowing into sensitive components, such as the light-emitting diode (LED) in this circuit.</div></div>\n<p>Too much current can destroy many sensitive electronic components ' such as transistors and integrated circuits. By putting a resistor at the input to a sensitive part, you limit the current that reaches the part. (But if you use too high a resistance, you'll limit the current so much you won't see the light, although it's there!) This simple technique can save you a lot of time and money that you would otherwise lose fixing accidental blow-ups of your circuits.</p>\n<p>You can observe how resistors limit current by setting up the circuit shown and trying out resistors of different values.</p>\n<p>Here's what you use to build the LED-resistor circuit:</p>\n<ul class=\"level-one\">\n <li><p class=\"first-para\">Four 1.5-volt AA batteries</p>\n </li>\n <li><p class=\"first-para\">One four-battery holder (for AA batteries)</p>\n </li>\n <li><p class=\"first-para\">One battery clip</p>\n </li>\n <li><p class=\"first-para\">One</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image1.png\" height=\"23\" alt=\"image1.png\" width=\"130\"/>\n<p class=\"child-para\">(identified by yellow-violet-brown stripes and then a fourth stripe which may be gold, silver, black, brown, or red)</p>\n </li>\n <li><p class=\"first-para\">One 4.7</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image2.png\" height=\"23\" alt=\"image2.png\" width=\"96\"/>\n<p class=\"child-para\">(yellow-violet-red and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">One 10</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image3.png\" height=\"23\" alt=\"image3.png\" width=\"96\"/>\n<p class=\"child-para\">(brown-black-orange and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">One 47</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image4.png\" height=\"23\" alt=\"image4.png\" width=\"96\"/>\n<p class=\"child-para\">(yellow-violet-orange and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">One LED (any size, any color)</p>\n </li>\n <li><p class=\"first-para\">Three insulated alligator clips <i>or</i> one solderless breadboard</p>\n </li>\n</ul>\n<p>Use alligator clips or a solderless breadboard to set up the circuit (see the following figure), starting with the 470 resistor. Remember to orient the LED correctly, connecting the shorter lead of the LED to the negative battery terminal. Don't worry about the orientation of the resistor; either way is fine. Note how brightly the LED shines. Then remove the resistor and replace it with the other resistors, one at a time, increasing the amount of resistance each time. Did you notice that the LED shines less brightly each time? That's because higher resistances restrict current more, and the less current an LED receives, the less brightly it shines.</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image5.jpg\" height=\"195\" alt=\"Two ways to set up the resistor-LED circuit.\" width=\"535\"/><div class=\"imageCaption\">Two ways to set up the resistor-LED circuit.</div></div>\n<p>The following figure shows a parallel circuit in which each branch contains a different value of resistance. For higher values of resistance, the current that passes through that branch is restricted more, so the LED in that branch emits less light.</p>\n<div class=\"imageBlock\" style=\"width:263px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image6.jpg\" height=\"400\" alt=\"Higher values of resistance restrict current more, resulting in less light emitted from the LEDs.\" width=\"263\"/><div class=\"imageCaption\">Higher values of resistance restrict current more, resulting in less light emitted from the LEDs.</div></div>\n<h2 id=\"tab2\" >Reducing voltage</h2>\n<p>Resistors can be used also to reduce the voltage supplied to different parts of a circuit. Say, for instance, you have a 9-volt power supply but you need to provide 5 volts to power a particular integrated circuit you're using. You can set up a circuit, such as the one shown here, to divide the voltage in a way that provides 5 V at the output. Then ' voilà ' you can use the output voltage, <i>V</i><i><sub>out</sub></i>, of this <i>voltage divider</i> as the supply voltage for your integrated circuit.</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image7.jpg\" height=\"305\" alt=\"Use two resistors to create a voltage divider, a common technique for producing different voltages \" width=\"535\"/><div class=\"imageCaption\">Use two resistors to create a voltage divider, a common technique for producing different voltages for different parts of a circuit.</div></div>\n<p>To observe the voltage divider in action, set up the circuit shown by using the following parts:</p>\n<ul class=\"level-one\">\n <li><p class=\"first-para\">One 9-volt battery</p>\n </li>\n <li><p class=\"first-para\">One battery clip</p>\n </li>\n <li><p class=\"first-para\">One 12</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image8.png\" height=\"23\" alt=\"image8.png\" width=\"96\"/>\n<p class=\"child-para\">(brown-red-orange and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">One 15</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image9.png\" height=\"23\" alt=\"image9.png\" width=\"96\"/>\n<p class=\"child-para\">(brown-green-orange and any color for the fourth stripe)</p>\n </li>\n <li><p class=\"first-para\">Three insulated alligator clips <i>or</i> one solderless breadboard</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image10.jpg\" height=\"192\" alt=\"Two ways to build the voltage divider circuit.\" width=\"535\"/><div class=\"imageCaption\">Two ways to build the voltage divider circuit.</div></div>\n </li>\n</ul>\n<p>Next, use your multimeter set to volts DC to measure the voltage across the battery and across the 15</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/.image11.png\" height=\"23\" alt=\"image11.png\" width=\"96\"/>\n<p>as shown. Measurements show that the actual battery voltage is 9.24 V and <i>V</i><i><sub>out</sub></i> is 5.15 V.</p>\n<div class=\"imageBlock\" style=\"width:535px;\"><img src=\"https://www.dummies.com/wp-content/uploads/.image12.jpg\" height=\"142\" alt=\"Measure the total voltage supplied by the battery (left) and the voltage across the resistor (right\" width=\"535\"/><div class=\"imageCaption\">Measure the total voltage supplied by the battery (left) and the voltage across the resistor (right).</div></div>\n<h2 id=\"tab3\" >Controlling timing cycles</h2>\n<p>You can also put a resistor to work with another popular component ' a capacitor ' to create predictable up and down voltage swings. You'll find the resistor-capacitor combo helps you create a kind of hourglass timer, which comes in handy for circuits that have time dependencies (for instance, a three-way traffic light).</p>","blurb":"","authors":[{"authorId":,"name":"Cathleen Shamieh","slug":"cathleen-shamieh","description":" <p><b>Cathleen Shamieh</b> is an electrical engineer and a writer with extensive engineering and consulting experience in the fields of medical electronics, speech processing, and telecommunications. ","hasArticle":false,"_links":{"self":"https://dummies-api.dummies.com/v2/authors/"}}],"primaryCategoryTaxonomy":{"categoryId":,"title":"General Electronics","slug":"general-electronics","_links":{"self":"https://dummies-api.dummies.com/v2/categories/"}},"secondaryCategoryTaxonomy":{"categoryId":0,"title":null,"slug":null,"_links":null},"tertiaryCategoryTaxonomy":{"categoryId":0,"title":null,"slug":null,"_links":null},"trendingArticles":null,"inThisArticle":[{"label":"Limiting current","target":"#tab1"},{"label":"Reducing voltage","target":"#tab2"},{"label":"Controlling timing cycles","target":"#tab3"}],"relatedArticles":{"fromBook":[{"articleId":,"title":"Electronics For Dummies Cheat Sheet","slug":"electronics-for-dummies-cheat-sheet","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}},{"articleId":,"title":"Tools Needed for Electronics Projects","slug":"tools-needed-for-electronics-projects","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}},{"articleId":,"title":"Displaying Electrical Signals on an Oscilloscope","slug":"displaying-electrical-signals-on-an-oscilloscope","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}},{"articleId":,"title":"Electronics: Doping Semiconductors","slug":"electronics-doping-semiconductors","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}},{"articleId":,"title":"10 Memorable Names in Electronics","slug":"10-memorable-names-in-electronics","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}}],"fromCategory":[{"articleId":,"title":"How to Assemble a Color Organ Circuit","slug":"assemble-color-organ-circuit","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}},{"articleId":,"title":"What You Need to Build a Color Organ Circuit","slug":"need-build-color-organ-circuit","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}},{"articleId":,"title":"How a Color Organ Works","slug":"color-organ-works","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}},{"articleId":,"title":"What is a Color Organ Circuit?","slug":"color-organ-circuit","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}},{"articleId":,"title":"How to Use a Color Organ Circuit","slug":"use-color-organ-circuit","categoryList":["technology","electronics","general-electronics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/"}}]},"hasRelatedBookFromSearch":false,"relatedBook":{"bookId":,"slug":"electronics-for-dummies-3rd-edition","isbn":"","categoryList":["technology","electronics","general-electronics"],"amazon":{"default":"https://www.amazon.com/gp/product//ref=as_li_tl?ie=UTF8&tag=wiley01-20","ca":"https://www.amazon.ca/gp/product//ref=as_li_tl?ie=UTF8&tag=wiley01-20","indigo_ca":"http://www.tkqlhce.com/click--?url=https://www.chapters.indigo.ca/en-ca/books/product/-item.html&cjsku=","gb":"https://www.amazon.co.uk/gp/product//ref=as_li_tl?ie=UTF8&tag=wiley01-20","de":"https://www.amazon.de/gp/product//ref=as_li_tl?ie=UTF8&tag=wiley01-20"},"image":{"src":"https://www.dummies.com/wp-content/uploads/electronics-for-dummies-3rd-edition-cover--203x255.jpg","width":203,"height":255},"title":"Electronics For Dummies","testBankPinActivationLink":"","bookOutOfPrint":true,"authorsInfo":"<p><p><b><b data-author-id=\"\">Cathleen Shamieh</b></b> is an electrical engineer and a writer with extensive engineering and consulting experience in the fields of medical electronics, speech processing, and telecommunications.</p>","authors":[{"authorId":,"name":"Cathleen Shamieh","slug":"cathleen-shamieh","description":" <p><b>Cathleen Shamieh</b> is an electrical engineer and a writer with extensive engineering and consulting experience in the fields of medical electronics, speech processing, and telecommunications. 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