LED Desklamp Conversion
![desk_lamp.jpg](/proxy/?url=https://content.instructables.com/F4B/UAGN/HIWDJTJP/F4BUAGNHIWDJTJP.jpg&filename=desk_lamp.jpg)
![1351079378_449494548_1-Pictures-of--Study-lamp-of-Green-Colour-in-exellent-working-condition.jpg](/proxy/?url=https://content.instructables.com/F2I/8NJS/HIW83OYM/F2I8NJSHIW83OYM.jpg&filename=1351079378_449494548_1-Pictures-of--Study-lamp-of-Green-Colour-in-exellent-working-condition.jpg)
While clearing my store, i found my old desk lamp, non working desk lamp. Despite repairing, i rather convert it to LED which is better brightness and energy efficient too.
Disassemble the Lamp
![LED 0015.JPG](/proxy/?url=https://content.instructables.com/FTJ/7BT6/HIW8OEPL/FTJ7BT6HIW8OEPL.jpg&filename=LED 0015.JPG)
The parts of desk lamp when dismantled.
PCB Design and Stickering Techniques
![LED 0009.JPG](/proxy/?url=https://content.instructables.com/F43/8KCB/HIWDJTM8/F438KCBHIWDJTM8.jpg&filename=LED 0009.JPG)
![LED 0010.JPG](/proxy/?url=https://content.instructables.com/FQU/0XAZ/HIWDJTMJ/FQU0XAZHIWDJTMJ.jpg&filename=LED 0010.JPG)
![LED 0012.JPG](/proxy/?url=https://content.instructables.com/FIY/PE8X/HIW8MTSG/FIYPE8XHIW8MTSG.jpg&filename=LED 0012.JPG)
![LED 0013.JPG](/proxy/?url=https://content.instructables.com/FSR/OIKX/HIW8C02L/FSROIKXHIW8C02L.jpg&filename=LED 0013.JPG)
The circuit and LED arrangement are made using PCB software.From the software using P-Cut machine the layout of circuit are made
Board Preparation
![LED 0026.JPG](/proxy/?url=https://content.instructables.com/FW9/4KYX/HIW823ZV/FW94KYXHIW823ZV.jpg&filename=LED 0026.JPG)
After submerge the board into the ferric chloride acid, the remaining sticker are removed to reveal the copper trace
LED Board Preparation
![LED 0033.JPG](/proxy/?url=https://content.instructables.com/F2C/6MW7/HIW8LA0T/F2C6MW7HIW8LA0T.jpg&filename=LED 0033.JPG)
![LED 0036.JPG](/proxy/?url=https://content.instructables.com/F98/66QP/HIW8OEW2/F9866QPHIW8OEW2.jpg&filename=LED 0036.JPG)
The board are stick with chrome sticker as reflector and and drilled for LED
LED Soldering
![LED 0037.JPG](/proxy/?url=https://content.instructables.com/F0H/7ADU/HIW8OEXT/F0H7ADUHIW8OEXT.jpg&filename=LED 0037.JPG)
![LED 0038.JPG](/proxy/?url=https://content.instructables.com/FFA/U1HE/HIW8MU45/FFAU1HEHIW8MU45.jpg&filename=LED 0038.JPG)
![LED 0039.JPG](/proxy/?url=https://content.instructables.com/F9B/FR14/HIW8OEXU/F9BFR14HIW8OEXU.jpg&filename=LED 0039.JPG)
![LED 0041.JPG](/proxy/?url=https://content.instructables.com/FNM/UUI4/HIW8LA1Q/FNMUUI4HIW8LA1Q.jpg&filename=LED 0041.JPG)
![LED 0042.JPG](/proxy/?url=https://content.instructables.com/FJ4/R3GJ/HIWDJTSW/FJ4R3GJHIWDJTSW.jpg&filename=LED 0042.JPG)
The LED used here are piranha type from ebay. just about MYR 0.25 each.
LED Board Mounting and Finishing
![LED 0043.JPG](/proxy/?url=https://content.instructables.com/FYC/1M4K/HIW8C08X/FYC1M4KHIW8C08X.jpg&filename=LED 0043.JPG)
![LED 0044.JPG](/proxy/?url=https://content.instructables.com/FP6/0AVP/HIWONP4U/FP60AVPHIWONP4U.jpg&filename=LED 0044.JPG)
![LED 0046.JPG](/proxy/?url=https://content.instructables.com/F5Y/7BDN/HIW8MUYV/F5Y7BDNHIW8MUYV.jpg&filename=LED 0046.JPG)
The completed LED board wire soldered and mounted using copper stand to the plastic body.
Power Supply
![LED 0023.JPG](/proxy/?url=https://content.instructables.com/F5Y/0WI9/HIW8MUZC/F5Y0WI9HIW8MUZC.jpg&filename=LED 0023.JPG)
![LED 0026.JPG](/proxy/?url=https://content.instructables.com/FO6/ND54/HIWOUEFI/FO6ND54HIWOUEFI.jpg&filename=LED 0026.JPG)
![LED 0027.JPG](/proxy/?url=https://content.instructables.com/FH9/I54P/HIWHR02Y/FH9I54PHIWHR02Y.jpg&filename=LED 0027.JPG)
![LED 0031.JPG](/proxy/?url=https://content.instructables.com/FBJ/ET1B/HIW8MUZM/FBJET1BHIW8MUZM.jpg&filename=LED 0031.JPG)
All components used as power supply for the LED lamp.
Just a simple LM7805 voltage regulator circuit.
after all components soldered and tested, the board and transformer are mounted back into the base.
*transformer used here are salvaged from old radio. Heavy transformer makes the lamp more stable
Just a simple LM7805 voltage regulator circuit.
after all components soldered and tested, the board and transformer are mounted back into the base.
*transformer used here are salvaged from old radio. Heavy transformer makes the lamp more stable
Assembly
![LED 0048.JPG](/proxy/?url=https://content.instructables.com/F4S/PX0E/HIZD904D/F4SPX0EHIZD904D.jpg&filename=LED 0048.JPG)
![LED 0049.JPG](/proxy/?url=https://content.instructables.com/F3P/015I/HIYWMMOS/F3P015IHIYWMMOS.jpg&filename=LED 0049.JPG)
![LED 0054.JPG](/proxy/?url=https://content.instructables.com/FXI/B3RP/HIZDAUXW/FXIB3RPHIZDAUXW.jpg&filename=LED 0054.JPG)
All arm and lamp parts are assembled as original condition with proper wire dressing.
Circuit Board Set-up
![LED 0057.JPG](/proxy/?url=https://content.instructables.com/FTM/AVQR/HIZDAUXX/FTMAVQRHIZDAUXX.jpg&filename=LED 0057.JPG)
![LED 0056.JPG](/proxy/?url=https://content.instructables.com/FBB/JIII/HIYWKIYA/FBBJIIIHIYWKIYA.jpg&filename=LED 0056.JPG)
the power supply board and power transformer are screwed and mounted properly with proper arrangement for cover.
Testing and Finishing
![LED 0054.JPG](/proxy/?url=https://content.instructables.com/FXI/B3RP/HIZDAUXW/FXIB3RPHIZDAUXW.jpg&filename=LED 0054.JPG)
![LED 0058.JPG](/proxy/?url=https://content.instructables.com/FNG/06TE/HIZD904L/FNG06TEHIZD904L.jpg&filename=LED 0058.JPG)
![LED 0061.JPG](/proxy/?url=https://content.instructables.com/FUC/BTF7/HIYWKIYB/FUCBTF7HIYWKIYB.jpg&filename=LED 0061.JPG)
Excess silver shining sticker removed, and the lamp are tested
Ready to light...
Ready to light...