Patent ID: 7626342

Claim:
A power controller for solid state lighting (SSL), comprising: an AC-DC limited current unit for converting an input AC power to a first DC power, wherein a bridge circuit is coupled with a first and a second capacitor in such configuration that when the input AC power is connected, the input AC power is sequentially treated by the first capacitor, the bridge circuit, and the second capacitor a feedback controller coupled to the AC-DC limited current unit; a sensor processor coupled to the feedback controller; a signal generator coupled to the sensor processor; and a SSL lamp module coupled to the feedback controller and at least one feedback sensor, said AC-DC limited current unit, said feedback controller and said SSL lamp module being in close loop circuit, wherein said signal generator generates a standard signal reflecting the standard settings of the SSL lamp module and the value of the first DC powers and transmits the standard signal to said sensor processor; and said sensor processor, after collecting signals from the at least one feedback sensor which measures the working condition of the SSL lamp module, sends a control signal to said feedback controller; and said feedback controller generates a control signal to said AC-DC limited current unit and simultaneously modifies the first DC power and outputs a second DC power directly to said SSL lamp module.