Patent ID: 6461019
Filing Date: 2002-10-08
Classification: F21S,F21V,F21Y,H05B,Y02B,Y10S

Abstract:
A method of determining a workable number of light emitting diodes directly coupled in series to an AC power source to provide a stable light source, said method comprising the following steps:determining an RMS voltage rating (VRMS) of said AC power source; determining an AC voltage rating for a particular type of light emitting diodes by determining an average voltage drop (Vavg) across said particular type of light emitting diode when connected to said AC power source; calculating said workable number (WN) of said light emitting diodes according to the following formula WN=Vrms/Vavg; and electrically interconnecting a plurality of said particular type of light emitting diodes equal to said workable number (WN) in series directly to said AC power source without any intermediate circuit altering devices.