Hello, readers welcome to the new post. Here we will learn How To Use Variable Resistors in Proteus. Resistance is the very basic part of any circuit that can create a hindrance in the flow of current in the circuitry. each material has a certain value of resistance and resistance or ohmmeter is used for finding the value of resistance offered by the circuitry.
The formula of resistance is R=ΡL/α. Resistance is a term used in the electrical system to explain the opposition that occurs in the flow of current. In this post, we will make a circuit and see the practical understanding of the variable resistance used in the circuit and learn its proteus simulation.
Introduction to Variable Resistor
- The variable resistor is a category of resistor that has the ability to change its resistance measuring capacity.
- It is an electromechanical device that consists of a slider having resistance components to vary the resistance.
- If it is linked in such a way that there is a larger resistance is given then less value of current passes and in case of a small value of resistance high current passes.
- Through varying, the resistance of circuitry can also be used as a volts control device of any circuit.
- It is called a potentiometer when working as a voltage or potential divider.
- When working as a variable resistor called a rheostat.
- There is a certain type of variable resistance that operates electronically way named a digital potentiometer.
Variable Resistor Features
- Its main features are listed here
- The physical dimensions of this resistance is larger than other resistances commonly used
- It consists of three terminals first one is a moveable pinout and the other 2 are not moveable
- It comes with a changeable port.
- It is used in small-level signal circuits.
How To Use Variable Resistor in Proteus
- To learn the understanding of the variable resistor in proteus we will make a circuit and use the variable resistance in the proteus practically.
- First of all open the proteus on your PC then move to the component library and choose the component of projects that are listed here.
- Battery
- Resistance
- Voltmeter
- Switch
- Variable Resistance
- All components can be seen here
- Make the circuit according to shown diagram and link all elements in a proper way as required.
- When you make the circuit run the simulation and see the results at the output voltmeter.
- Then vary the value of variable resistance by pressing on the point of the resistor a result you will see the variation in the value of output voltages at the voltmeter.
- Can be easily seen that with the change in the resistance value of volts varying.
Types of Variable Resistors
- potentiometers
- thermistors
- photoresistors
- force sensing resistor
- bending resistors
HOW VARIABLE RESISTORS WORK
- The variable resistor is operated by setting a path the current flows. In a resistor, there is a metallic strip or conducting ceramic that is connected to one part of the circuit.
- Dial we turn move another piece of wire in resistor. The end result is that current passes through a certain length of strip based on where the knob turn. If the current passes through a longer path it will face high resistance.
Variable Resistors vs Potentiometer
- The potentiometer comes with an adjustable range and is used for circuit control. it is connected to the panel for adjustment. The variable resistor comes with a small adjustable range and works for circuit parameters compensation.
- Potentiometer has different functions than variable resistors and works without an operating handle.
- The potentiometer comes with multiple connections and the variable resistor does not have
- Potentiometer is a larger size, sold structure and longer working life.
How to set up a variable resistor?
- Any side of the variable resistor can be connected with a circuit board with the other side grounded, but the best is to connect the wiper. Wipre must be grounded or affixed with a voltage source.
What’s the difference between a resistor and a variable resistor?
- Variable resistors are called rheostats in electrical components whose resistance can be changed by manual process, and fixed resistors have set resistance values that are not changed.
Is a potentiometer a variable resistor?
- The potentiometer is a common type of variable resistor. It works as a resistive divider and is normally used to generate voltage signals based on the position of the potentiometer.
How to change current using a variable resistor?
- The variable resistor can used for controlling current passing in the circuit. If the potential difference is constant then the current decreases as the resistance of the variable resistor increases. The variable resistor can used for controlling the potential difference of components connected in series.
What is the symbol for a variable resistor?
- As variable resistor is a variable resistance component and has two terminals. It is denoted with lead wire and a broken line having an arrow, or fixed resistor symbol having arrow.
What is another name for a variable resistor?
- It called a rheostat which is accurate as compared to the potentiometer, which is 3 terminal device that makes an adjustable voltage divider.
What is an example of a variable resistor?
- Potentiometers and rheostats are variable resistors where wiper terminals take a type of dial or slider that users do not manipulate, like the volume control of radio.
- Rheaostate is like a potentiometer and handles high power.
Read also:.
- What is a 10k Resistor? Explain 10k Ohm Resistor Color Code
- What Is Resistor? – Symbols, Types and Its Applications
- What is a Variable Resistors: Definition, Uses, Resistor Symbol, Types & Applications
- What is the difference between crystal, resonator and oscillator?
- What is a potentiometer – Construction, Types, Uses, Working Principle & Applications
- Difference Between Potentiometer and Rheostat
That is all about the How To Use Variable Resistor in Proteus if you have any further queries ask in the comments. Thanks for reading have a good day see you in the next post.
