DIY Retrofit LED Bulb


Starting from an old defect incandescent light Bulb


1) You need to remove the socket and break out the old filament.


2) Build a circuit with LEDs in series, a full wave rectifier, resistors and capacitors like this one:Circuit_wtBG3) Form the string of LEDs to a compact construction like a helix.


4) Fit the rest of the circuit into the bulbs socket and have a check if it works properly.


5) Reunion of socket and the glass envelop. (Silicone polymer  was used)


6) Let it shine!


(c)langhans 2014


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