High current led driver diy

The circuit is a constant-current source, the value of R3 sets the current. Calculations: LED current is set by R3, it is approximately equal to: / R3 - R3 power: the power dissipated by the resistor is approximately: / R3 I set the LED current to mA by using R3 of ohms. R3 power is watt, so a standard 1/4 watt resistor is fine.  · Get professional PCBs for low prices from www.doorway.ru --~--In this video we make a DIY High Power LED driver for a 10 watt LED. We use an android app call. 4 hours ago · This buck LED driver features a 2A integrated MOSFET switch for minimal BOM and a small PCB footprint. With 5% output current accuracy for optimal LED brightness control, this device can drive a string of high current LEDs with advanced features such as ultra-low 2µA shutdown current to conserve battery power.

LED drivers are widely used for driving high voltage LEDs or lamps or miniature LEDs for indication via microcontroller signals. An LED driver circuit must provide enough current to light up the LED but must limit the current to prevent damage. A constant current regulator is commonly used for high power LEDs. It provides a constant current which will light up the LED and not damage it. first, glue Q1 upside-down to the front of Q2 so that it is easier to work with. this has the added benefit that if Q2 gets very hot, it will cause Q1 to reduce the current limit - a safety feature! - connect pin 3 of Q1 to pin 1 of Q2. - connect pin 2 of Q1 to pin 3 of Q2. - solder resistor one leg of resistor R1 to that dangling LED-plus wire. Get professional PCBs for low prices from www.doorway.ru --~--In this video we make a DIY High Power LED driver for a 10 watt LED. We use an android app call.

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