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What is 4 Channel power supply? How to choose a correct Power supply depending on the requirement?

In Short-
1.	SMPS Stands for Switched mode power supply
2.	Power supply adapters are available in 4Ch/8Ch/16Ch output configuration
3.	CCTV camera protected from High voltage/current surge
4.	Equipped with short circuit protection
5.	CCTV camera consume 4-5W power

Introduction:

What is 4 Channel power supply? Switched mode power supply (SMPS) in one of the integral part of any CCTV surveillance system. It becomes one of the main prerequisites when it comes to powering up your CCTV camera. In this post you will going to learn, what is a power supply? What power supply for CCTV camera? What is power the power consumption of the camera? What are the available power supply options to use with CCTV camera? Let’s go then.

What is power supply?

A power supply is an electronic circuit that provide an electric power in terms of voltage and current to operate an electronic device or load. More precisely Power supply converts Mains AC voltage into a low regulated DC voltage. It is basically an AC to DC converter with steady DC output voltage. It comes with short circuit, over voltage and over current protection circuits to prevent electrical damage to the load in case of any power surge.

What power supply for CCTV?

12V Power supply. CCTV camera are designed to operate on 12V, 1A power supply. This is the standard power rating for most of the CCTV camera manufactured by leading CCTV camera manufacturing companies.

What is the power consumption of the CCTV Camera?

Power consumption of a CCTV camera is ranging from 4W to 8W depending on the type of camera. A typical camera consumes about 4 Watts of power where as a motorized camera may consume up to 7.7 Watts of power.

What are the available power supply to use with CCTV camera?

CCTV Power supply comes with 4/8/16 terminal output. So as categorized as 4Ch, 8Ch or 16Ch power supply. For CCTV camera setup having 4 CCTV, the choice will be 4 Channel power supply.

There are standalone power supply adapters also available that can only power up a single CCTV camera only. In 4 Channel CCTV system you need to have 4 power adapter to power on each camera individually so will require 4 Channel power supply.

4 Channel power supply
Image Source: https://www.circuitspecialists.com/12-volt-power-supply-5-amps
Key Specification of CCTV Power Supply-
  • Input Supply Voltage- 90V-230V AC
  • Output Voltage Rating- 12V, +/- 10%
  • Output Current Rating- 1A – 16A
  • Over Voltage Protection- Yes
  • Over Current Protection- Yes Short Circuit Protection- Yes
How to choose correct power supply?

It is very simple task to choose a correct power supply for your CCTV camera system. You need to assess the voltage and current requirement of the CCTV system that you are planning to deploy. Generally an individual camera need 12V 1A power rating to power on, As number increase the current requirement also increases.

So for 4 Camera setup the current requirement will be up to 4A, +/-0.5A ~ 5A.

for 8 Camera setup the current requirement will be up to 8A, +/-1A ~ 10A.

Price of 4 Channel Power Supply in India?

4 Channel power supply cost around 350 to 450 Indian rupees.

Steps for connecting CCTV Camera to power supply SMPS-
1.	CCTV camera use Female DC Pin connector to receive power.
2.	Take one Male DC pin connector
3.	Identify Positive (+) and Negative (-) terminal.
4.	Look for the Positive (+) and Negative (-) terminal on the power supply SMPS
5.	Connect Positive terminal to positive and negative to negative terminal.
6.	Use color coding to define positive and negative terminal.
7.	Power on the power supply adapter, check power LED is on.
8.	Check Output power LED on SMPS.
9.	You have successfully connected a CCTV camera to a power supply
10.	Check your camera it should be powered on.

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