CFLED Lamp (Unit #3)
- A simple, custom-made 120-Volt LED lamp -

     Compact Fluorescent Lamps (CFL) are an efficient and long-lived lighting source. However, like all lamps, they eventually "burn out" and sometimes fail prematurely. One alternative I thought of to recycling failed lamps is to reuse the parts for custom LED lamps. This page documents building Unit #3 of my "CFLED" lamp design.

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Materials  |  All Photos

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NOTE: For more information about the CFLED Lamp design and idea, see the CFLED Lamp (Unit #1) Page.

Specifications:

• LED Quantity: 4 Green + 3 Blue
• LED Type: 5mm "superbright"
• LED Viewing Angle: 30 degrees
• Connector: Edison E26 (medium) screwbase
• Input Voltage: 120 Volts AC
• Power Consumption: About 1/3 Watt (13.9mA @ 26.75V)

Materials List:

• (1) Old / defective Compact Fluorescent Lamp (CFL)
• (1) 0.47uF, 250V, non-polarized capacitor (like Digikey P/N P10734-ND) **
• (1) 180-ohm, 1/2-Watt metal film resistor    (like Digikey P/N PPC180W-1CT-ND)
• (4) 1N4004 or similar (400V, 1A) Diodes   (like Digikey P/N 1N4004FSCT-ND)
• (4) "Super-bright" T 1-3/4, 5mm diameter, green LEDs
• (3) "Super-bright" T 1-3/4, 5mm diameter, blue LEDs
• (1) 27V TVS diode, bi-directional
• Hot glue, electrical tape

• ** NOTE: The capacitor should be a film-type capacitor rated for AC mains use!
• ** NOTE: For 220 to 240 Volts AC mains power, use a 0.22uF, 600V capacitor for C1.

CFLED Lamp, Unit #3 Photos
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