Primary Resistor

Intro:

A Primary resistor is basically a type of electrical device with two ends used in an electrical circuit. The function of the resistor is to block that current flow. A resistor that blocks the flow of current due to its religion is usually called a resistor. A resistor prevents the flow of current by creating a potential difference between its two ends through the conditions in the circuit. In electronic circuits, resistors are used to reduce current flow and adjust signal levels and divide voltages, and to terminate transmission lines, among other uses.

Resistor



Resistor starters are used to start squirrel cage motors where limited torque is required to prevent damage to a driven machinery. These starters are used to avoid excessive power line disturbances with limited current inrush. The simplest and most common method of starting a low voltage motor is to use primary resistor type starters. With this method, a resistor is connected in series with the motor. Current flows through the resistors and immediately a voltage drop occurs and the voltage at its motor terminals decreases by that amount.

A Symbol Resistor is Shown:



This is a resistor symbol. Basically Resistor is an English word which means Resistor in Bengali. The word resistor means that it is a blocking element. A device that impedes the flow of current through a conductor is called a resistor. It is basically known as a passive electronic device with two ends. Resistors have expressions, symbols and units. Hence, resistance is denoted by R. Its unit is called ohm. Below is some detailed discussion about the different types of resistors.

Resistors are basically of two types. These are illustrated. and its symbols are shown which are used in various circuit boards and circuit diagrams. The two types are- 1. Series circuit 2. Parallel circuit.

Series circuit:



Series Circuit Series is an English word whose Bengali dictionary meaning is continuity. So in this case multiple load resistors are connected in series with electrical connections to form a path of current flow. Examples of series circuits are named:

Water heater

The freezer

Refrigerator

The bulb

The lamp

Flashlight

Good water pump.

In series circuits, the current through each element is the same, and the voltage across each circuit is the sum of the voltages across each element. In a series circuit, all components are connected end to end, creating a single path for current to flow. In another parallel circuit, all components are connected to each other, creating two sets of these common points electrically.

From this definition, series circuits follow the three laws. All these components share the same current. As such, these resistances add up to a large, total resistance, and these voltage drops add up to a large, total voltage. Hence, all these rules find their main function in the definition of a series circuit.

Parallel circuit:



A parallel circuit consists of two or more paths for current to flow simply remember, that PARALLEL means two paths to thousands of paths. And the power flow is divided between each according to the impedance of each route. Multiple load resistors are connected to the electrical source in an array as shown in the figure above, so that there are multiple paths for current flow. Generally, in a parallel circuit, all components are connected to each other, creating exactly two sets of electrically common points.

Suppose an example of a parallel circuit is a circuit that is divided into two branches, joined together again, but in which case a lamp is connected to each of the two branches. In a parallel circuit, the voltage across each element is the same, and the total current is the sum of the currents through each element. Examples of parallel circuits are – outlets in our homes, cleaning appliances and house wiring are included in parallel circuits.

Functions Of Resistor:

The main function of a resistor is to stop the flow of current or drop the voltage in a circuit. Now, the question may be why there is a need to mains the circuit or any component to prevent low voltage or current flow? This can be easily understood with an example, suppose an LED in a circuit.

Light Emitting Diode has a voltage range of 1.5 to 3 volts. Now if for some reason the source voltage in the circuit goes above 3 volts then the component (LED's) is more likely to be damaged.

A resistor is used in the circuit to prevent this from happening. In case of LED the resistor will drop the voltage more than 3 volts. Besides, current and voltage are provided according to the resistance requirement. Here we are just an example of an LED But the resistor is basically this in all cases works Electrical resistors can be considered as the main driving force of the circuit.

They may be small and often built into other components, but resistors are an essential component of almost every electrical circuit. These hidden resistors are essential because they control the flow of current in sensitive components and they protect the components from voltage spikes. These resistors are generally used to reduce current flow, and to divide voltages, block transmission signals and bias active components. Resistors are used to prevent the flow of current. When a resistor is placed in a circuit, the current through the resistor decreases. As part of this energy in the current is dissipated as heat in the resistor, the total current is thus reduced.

Working Principle of Resistor:

This resistor absorbs electrical energy in the process where it reduces the voltage and acts as a barrier to current flow and is dissipated as heat. In today's world of electronic circuits, heat dissipation is typically a fraction of a watt. The primary objective is: to limit the electric current, so the key parameter is the resistance value.

The resistor term depends primarily on 3 parameters: resistance, bandwidth, and temperature. This is basically an example of a high-gain amplifier where noise must be minimized. Finally, wirewound resistors are the most powerful and precise, although they usually exhibit one or the other characteristic.

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