CircuitJS/C2/Voltage-Divider/English
| Visual Cue | Narration |
| Slide 1: | Welcome to the spoken tutorial on Voltage Divider circuits |
| Slide 2:
Learning Objective |
In this tutorial, we will learn how,
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| Slide3:
System Requirement |
To record this tutorial, I am using:
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| Slide 4:
Prerequisite |
To follow this tutorial, you should have a basic knowledge of
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| We will create this Voltage divider circuit for demonstration. | |
| Show the diagram
Voltage divider.png |
For Voltage Divider circuit we require
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| Keep the circuit diagram on top right | Let us open the circuitJS interface.
In the menu bar, click on File and select New Blank Circuit. |
| Draw => Add Resistor
Right-click => Duplicate |
Click on the Draw option and select Add resistor.
Click and drag to draw a resistor as shown. By default, the value of this resistor is 1 Kilo Ohm. We need two resistors of 1 Kilo Ohms for this circuit. Right-click on the resistor and select the Duplicate option. Place the resistors one below another as shown. Use the Add Text option and name these resistors as R1 and R2 respectively. |
| Draw => Inputs and Sources => Add Voltage Source
Right-click =>Swap Terminal Right Click => Edit.. |
Next, we have to add the DC power supply.
Click on Draw, go to Inputs and Sources, and select Add Voltage Source (2-terminal). Refer to the circuit diagram shown above to check the polarity of the DC power source. To change the polarity, right-click on the source and select the Swap Terminals option. The default value of this power supply is 5 volts. For our circuit, we need the DC power supply to be 12 Volts. To change the value of the power supply, right-click on the power supply. Select the Edit option. Change the value from 5 to 12 in the given box as shown. Click on the OK button to save the changes. |
| Draw => Outputs and Labels => Add Voltmeter / Scope Probe | We also need an Analog output to measure the voltage at the output.
Click on Draw, go to Outputs and Label, and select Analog Output. Click and drag to draw the analog output as shown. Place the analog output at the junction of the resistors R1 and R2 as shown. Right click on the analog output and select Edit option. Check the box to show the voltage and click on the OK button to save the changes. |
| Cursor in the work area. | We have all the required components in the work area.
Now let's connect the components using wires. |
| Draw => Add Wire | From the Draw menu, select Add wire.
Connect one end of the power supply to the R1 resistor. Connect the other end of the power supply to the R2 resistor as shown. |
| Point to yellow dots | Observe the yellow dots, indicating the current flow direction in the circuit.
Observe the voltage reading at the analog output. |
| You will see the analog output is reading 6 Volts at the output.
Click on the resistors R1 and R2 simultaneously to check the voltage passing through them. Both the resistors will have a voltage drop of 6V each. | |
| Simulation window | The voltage at the output of a series resistor is calculated by the voltage divider formula.
Let us see the formula: Vout = Vin (R1/R1+R2) Where, Vout is the output voltage Vin is the DC source used as an input R1, R2 are two resistors used in this circuit. |
| As we know, in a series resistance circuit, the voltage is distributed among each resistor. | |
| Simulation window | Now lets see the voltage divider in action. |
| Change the resister value in the Edit Component dialog box. | Let us change the value of resistor R1 to 3 Kilo Ohms using the edit option and check the output.
You will see the change in the analog output reading. Note that, the value of R1 resistor is 3 times more than the value of R2 resistor. Hence the power supply of 12 volts is divided in the same ratio. That is 3 is to 1. Voltage passing through R1 resistor is 9 volts. And the voltage passing through R2 resistor is 3 volts. |
| Only Narration. | This brings us to the end of the tutorial.
Let us summarize. |
| Slide
Summary |
In this tutorial, we learnt how
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| Assignment: | As an assignment do the following:
Vin = 12 Volts, Vout = 2 Volts and R2 = 2.5 Kilo Ohms |
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| Acknowledgement | Spoken Tutorial project was established by the Ministry of Education(MoE), Govt of India |
| Thank you | This tutorial has been contributed by FOSSEE and Spoken Tutorial Project, IIT Bombay.
Thanks for watching. |
