Electric iron Hand grinding Utility knife 350 ohm resistor 1 1 IN4007 LED Silicone rubber and thermal curing adhesive AB glue 1WLED1 15 degree condenser lens 1 18650 lithium battery (to be charged with protection board) 1 AMC7135 steady current chip 1 a stainless steel tube with an inner diameter of 21mm 1 switch Heat shrinkable tube wire 1. Working principle 2. Welding steady current chip and LED Place the 7135IC on the PCB surface of the LED, clip it with the book clip and solder it. 3. Wiring According to the description of the circuit diagram, the red line is connected to the LED positive pole, and the black line is connected to the GND pin of the 7135IC. 4. Processing condenser lens Installed LED coated with silicone rubber to improve waterproof and dustproof performance, installed lens Lighting test, good, bright Insert the lens into the stainless steel tube, pull the wire from the tail, and pour the heat-curing silicone to transfer the heat of the LED to the stainless steel tube. Portable energy storage power Stastion SHENZHEN CHONDEKUAI TECHNOLOGY CO.LTD , https://www.szsiheyi.com
Homemade led flashlight _ simple led flashlight circuit diagram
Homemade led flashlight step tool / raw materials: