12v Led Driver Circuits
High Efficiency 12V White LED Driver. Power this project from sunlight with a CirKits solar power circuit board kit. Other LED lamp circuits can be seen at FC s Solar.
If you came here through Google, then you might have seen other circuits too for high power LED driving which consists of much parts, like inductors, op-amps, different regulator IC s, transistor feedback networks, microcontrollers etc. Those circuits are more efficient than this one but the making expense and difficulty is much more high and so I am here showing you the simplest high power LED driver circuit.
Look at this article to make DIY LED driver for 5Watt LEDs, and 12V strips from 100-240 VAC
In market, we can get 1Watt and 3Watt LED easily. And the ratings of those 1Watt LEds are Forward Voltage 3.2V – 3.6V, Forward Current 300mA and for the 3Watt ones,m the ratings are Forward Voltage: VF3.4V, Forward Current :700mA.
So we consider 3.4volts as optimal voltage, and thus the 1watt LED is giving 3.4 0.3 1.02Watt and for 3watt it is, 2.38Watts.
So here s the simplest circuit that can be used.
Here, for a fixed reference supply, LM7805 regulator I.C which can deliver upto 1Amps of current, and in our cases the max required current is 700ma or 0.7Amps, so no problem there. And since the resistor R will be eating the extra 1.6 volts 5.0-3.4. So what would be the value of R.
For 1 watt model, there s current of 300mA, so the value of the resistor should be 5.3 Ohms appx and wattage should be 0.48. So a 5.6ohms 1/2watt general purpose resistor will do the job perfectly. And similarly, for the 3Watt model, the value of R would be 2.2Ohm 1.25Watt or 2Watt.
We can feed any voltage greater than 5.5 volts, so we can run this circuit in 6Volts supply or in 12 volts supply.
12v Led Driver Circuit, Buy Various High Quality 12v Led Driver Circuit Products from Global 12v Led Driver Circuit Suppliers and 12v Led Driver Circuit Manufacturers.
Cheapest High power LED driver circuit to make DIY LED driver for 5Watt LEDs, and 12V strips WHICH LED DRIVER WANT TOUSE WHAT SHOULD BE CIRCUIT.
The design is fine for the 12V led stripes but the single high power LED driver from 5V is severely flawed and won t properly drive a power LED.
Video embedded Intro: High Power LED Driver Circuits. High-power LED s: the future of lighting. but I have 12v, 10w bright led, can u help me to build drive circuit from.
