Patent ID: 9380665
Filing Date: 2016-06-28
CPC Classification: H05B

Claim Text:
1. A method of conditioning current in a light engine steps comprising: providing a pair of input terminals that receive a periodic excitation voltage; receiving a current of equal magnitude and opposite polarity into each one of the pair of terminals, said current flowing in response to the excitation voltage; providing a plurality of light emitting diodes (LEDs) arranged in a first network, said first network arranged to conduct said current in response to the excitation voltage exceeding at least a forward threshold voltage associated with the first network; providing a plurality of LEDs arranged in a second network in series relationship with said first network; providing a bypass path in parallel with the second network; dynamically increasing an impedance of the bypass path as a substantially smooth and continuous function of said current in response to a current amplitude increasing in a range above a threshold current value; and diverting the current from the first network with dimming conditioning circuitry as a function of the waveform of the periodic excitation voltage; wherein a resistor within the dimming conditioning circuitry dynamically increases the impedance of the bypass path as the substantially smooth and continuous function of said current in response to said current amplitude increasing in the range about a above the threshold current.