Patent ID: 8072161
Filing Date: 2011-12-06
Classification: H05B,Y02B

Abstract:
1. A bi-directional light emitting diode drive circuit in pulsed power non-resonance, the circuit of the bi-directional light emitting diode drive circuit (U 100 ) includes at least one capacitive impedance component or inductive impedance component, or resistive impedance component to be a first impedance, and at least one capacitive impedance component and at least one inductive impedance component in parallel connection, wherein the inherent parallel resonance frequency of the two after parallel connection is different from the pulse period of the pulsed power, and no parallel resonance is produced, thereby to be a second impedance; further, at least one first light emitting diode and at least one second light emitting diode are in parallel connection of inverse polarities, whereby to be at least one bi-directional conducting light emitting diode set which is parallel connected across the two ends of the second impedance, while the two ends of the first impedance and the second impedance are provided with the pulsed power input; a bi-directional divided alternated power is formed across the two ends of the first impedance and across the two ends of the second impedance, wherein at least one bi-directional conducting light emitting diode set is driven by the bi-directional divided power in decaying wave shape formed at the second impedance, or at least two bi-directional conducting light emitting diode sets respectively parallel connected across the two ends of the first impedance and across the two ends of second impedance are respectively driven by the divided power across the two ends of the first impedance and across the two ends of the second impedance, thereby to be the bi-directional light emitting diode drive circuit in pulsed power non-resonance of the present invention; comprising: the first impedance Z the second impedance (Z the first impedance (Z 1) DC pulsed power; or 2) the DC pulsed power with constant or variable voltage and constant or variable periods converted from DC power source; or 3) the DC pulsed power with constant or variable voltage and constant or variable periods converted from DC power which is further rectified from AC power; or 4) half-wave or full-wave DC pulsed power rectified from AC power with constant or variable voltage and constant or variable frequency; a bi-directional conducting light emitting diode set (L the first impedance (Z the bi-directional divided alternated power are formed across the two ends of the first impedance and the second impedance in the above circuit, wherein at least one bi-directional conducting light emitting diode set is driven by the divided power in decaying wave shape formed at the second impedance, or at least two bi-directional conducting light emitting diode sets which are respectively parallel connected across the two ends of the first impedance and the second impedance are respectively driven by the divided powers across the two ends of the first impedance and the second impedance, thereby to constitute the bi-directional light emitting diode drive circuit in pulsed power non-resonance; the first impedance (Z