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What Are Extension Boards?

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User is offline   xysoom 

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What Are Extension Boards?


To merely label extension boards as an electronic appliance is to do them a gross injustice. With one of these, you don’t have to scale walls to reach that distant power socket, nor are housemates forced to fight over who gets to charge their phone first! Multiple devices can be connected together, and this humble extension board becomes a hub of critical activity.Get more news about Customized Extension Socket,you can vist our website!

How do extension boards work?
A power strip or an extension board is comprised of multiple sockets connected independently to a flexible power cable and encased in a shockproof plastic shell.

It draws power from the wall sockets and distributes it amongst devices connected to these multiple sockets. Extension boards can vary in design, with some having features like individual switches and LED indicators to indicate which socket is being currently used.

The salient feature of extension boards is that they distribute power equally amongst the connected devices. This allows all devices to function flawlessly, and is achieved by connecting the individual sockets in ‘parallel’ to each other.Just like water flows across two areas that have differences in altitude, current flows between two points that have differences in potential.

In order for current to flow through a circuit, it must be connected to a power supply that creates a potential difference. This potential difference is also known as voltage.

The flow of current in a circuit is governed by Ohm’s Law, which expresses voltage as a product of the circuit’s resistance and the current flowing through it.where V is the voltage across the circuit, I is the current and R is the resistance provided by the circuit to the flow of that current.

All appliances connected in a circuit consume current, thus causing resistance to it from flowing further onward in the circuit. They are therefore represented as such. Based on the arrangement of resistances in a circuit, a circuit can be classified as series or parallel.In a series circuit, all resistances (appliances) are connected in a sequence, such that the entirety of the current flows through them. In series circuits, voltage drops across each resistance, whereas the current remains constant throughout. A real-world example of a series circuit is the electric string lights used for festive decoration. One major disadvantage of a series circuit is that the failure of one appliance in the circuit leads to disruption of the entire circuit.

In parallel circuits, all resistances are connected to a common power source, albeit along dedicated individual paths.

As every appliance gets its ‘own’ circuit, all appliances get equal voltage. Their draw of current depends on their individual resistances, making the total current drawn a sum of the individual currents drawn by each appliance. The flow of current in one loop of a parallel circuit is not dependent on others. This makes parallel circuits useful in extension boards.
While the underlying principle of extension boards is quite simple, the boards themselves are much more than a simple assemblage of parallel circuits. They must be designed keeping in mind the power consumption of appliances that will be connected to them. As parallel circuits are capable of drawing in heavy currents, it is essential to build in surge protection to prevent electrical damage or even short circuits and fires.
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