Fantastic 12 Watt Led Driver Circuit Diagram

Here ne driver circuit is simple and easy to manufacture only need a few components that are easy to find in stores store and the price is very affordable.

12 watt led driver circuit diagram. Sir is this circuit suitable for 9 watt and 12 watt as i want to use 9 parallel led of 1 2 watt and want to operate circuit at for 12 volt battery source led spec is 9 10 voff and 120 ma current please tell me what change is exaxtky required and lm 338 required heat sink or suggest any other good ckt for different combination like strings of 4 led 3 volt voff and 3 parallel series of this. Circuit diagram of leds in series. And the only way to change the led brightness is to change r3 so refer to the.

The basic principle behind the 230v led driver circuit is transformer less power supply. 47ω resistor 1 4 watt 12v power supply. Here a sample 3 watt led driver circuit diagram total 12 leds.

The led in the above diagram is a 12v 1 watt as shown below. The ic lm338 as we know is a highly versatile device when it comes to controlling voltages and current levels. The circuit diagram of the high power led driver is shown in the image below.

In the present design the device is configured in the automatic current control mode. This 4 watt led driver is a device that will illuminate a 4 watt led safely through a constant current circuit using the ic lm338. Circuit diagram and explanation.

The following image shows the circuit diagram of the leds in series. Led current in amps 1 25 r3 so for a current of 550ma set r3 to 2 2 ohms you ll need a power resistor usually r3 power in watts 1 56 r3 this circuit also has the drawback that the only way to use it with a micro controller or pwm is to turn the entire thing on and off with a power fet. In the above shown simple 1 watt led driver circuit the two 4 7uf 250 capacitors along with the 10 ohm resistors form a kind of speed breaker in the circuit this approach helps to arrest the initial switch on surge inrush which in turn helps to safeguard the led from getting damaged.

Components required for leds in series. The main component is the x rated ac capacitor which can reduce the supply current to a suitable amount. Part list simple high power led driver.