How to make easily auto ON/OFF Rechargeable Emergency light

Make easily auto ON/OFF Rechargeable Emergency light. 

Are you want to know How to make easily auto ON/OFF Rechargeable Emergency lights then this post will be helpful for you. Actually, we are going to know two things Inside an Emergency Light and How to make an easily auto ON/OFF Rechargeable Emergency light. 

            Internal parts and circuit diagram of an Auto ON/OFF Rechargeable Emergency light are given below. So using this circuit diagram you can make easily an auto ON/OFF Rechargeable Emergency light. The circuit diagram is very simple.
 
                At first, let's see what is inside an auto ON/OFF Rechargeable Emergency light. As you see in the picture there is an LED panel, a Transformer, and a simple circuit board in the Emergency light.

                       Here a 9V-0-9V Center-trapped Transformer is used to step down the voltage from 230V to 9V. Diodes are used to make rectifier circuits. A 12V relay is used for the automatic of the LED when it is connected to the power supply and at this time battery is charging. When the emergency light unplugged from the power supply automatically Led will be glow and the LED takes power from the battery. See the below circuit diagram for a better understanding.

Let's make an auto ON/OFF Rechargeable Emergency light:    

Apparatus Required:

1. No of LEDs that you want to connect.
2. A 9V-0-9V center-tapped Transformer.
3. A 12V Relay.
4. Four diodes
5. 25V/1000micro-farad electrolytic capacitor
6. Switch
7. Wires
8. A 6V rechargeable battery.

9. PCB Board

                         See the above circuit diagram carefully and make the circuit. Place all the components in a PCB. In the circuit diagram, only 9 LEDs are shown. You can connect any no. of LEDs according to your requirements. Connect the LEDs in series and parallel according to your current and voltage rating and you can use the resistor.  Before connecting the Relay identify the NO, NC, and coil terminals.


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