10 Watt LED Driver Circuit

Introduction:

                             This project is a 10-Watt LED Driver Circuit, designed to operate a damaged LED bulb. You can use this circuit to create a study lamp or for other purposes. The project employs an AC to DC rectifier circuit, eliminating the need for a transformer. It uses the principle of a transformer-less power supply and is cost-effective, with a total cost of less than ₹120.

Circuit Connection:                                     

            The circuit is built using a diode bridge rectifier. Here's a step-by-step guide to the connections:

1. Diode Bridge Rectifier:

   • The diode bridge has two input pins for 220V AC and two output pins for DC (to power the LED).
   • Connect the 220V AC phase input to the diode bridge through a 105j/400V capacitor.
   • A 1MΩ 2W resistor is connected in parallel with the 105j/400V capacitor.

2. Neutral Connection:

   • Connect the neutral input of the diode bridge to a 10Ω 2W resistor in series.

3. DC Output Smoothing:

   • Connect a 220μF/63V capacitor in parallel with the DC output of the diode bridge.

4. LED Connection:

   • Connect the positive DC output from the diode bridge through a 10Ω 2W resistor to the positive terminal of the 10W LED.
   • Connect the negative terminal of the LED to the negative DC output of the diode bridge.

With these connections, the circuit assembly is complete.

Working:              

The working of the circuit is as follows:

1. AC to DC Conversion:

   • The diode bridge rectifier converts the incoming 220V AC voltage to DC voltage.

2. Voltage Reduction and Stabilization:

   • The 105j capacitor reduces the AC input voltage.
   • The 1MΩ resistor stabilizes the capacitor's voltage, keeping it constant.
   • The DC output from the diode bridge is smoothed by the 220μF capacitor.

3. Voltage Regulation:

   • The 10Ω resistor regulates the voltage supplied to the 10W LED, ensuring proper operation without overloading.

4. LED Illumination:

   • When 220V AC is applied, the circuit drives the 10W LED, making it illuminate brightly.

Circuit Diagram: 

        A schematic diagram will help visualize the connections. Ensure to follow the diagram accurately to avoid any errors.

Note:

          Warning: This circuit is a shock hazard. Do not touch any lines while the circuit is powered. Ensure all connections are insulated and handle with care.

Part List:

       1)   1N4007 Diode =4

        2)   105j/400V Capacitor(1μF) =1

       3)   1MΩ 2 Watt Resistor =1

       4)   10Ω 2 Watt Resistor =2

       5)   220μF/63V Capacitor =1

       6)   10W LED with Heat Sink =1

       7)   Some Wires

Uses of the Project:                                

    This circuit can be used to replace and repair damaged LED bulbs and can be repurposed to create a study lamp or other lighting solutions.

    By following these instructions and assembling the components as described, you can create a functional 10-Watt LED driver circuit. This project is not only cost-effective but also serves practical purposes, offering a sustainable solution for damaged LED bulbs.

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