Patent ID: 8890433
Filing Date: 2014-11-18
Classification: H05B

Abstract:
1. A two-terminal current controller for controlling a first current flowing through a load which is coupled in parallel with the two-terminal current controller, wherein: during a rising period of a rectified AC voltage when a voltage established across the load does not exceed a first voltage, the two-terminal current controller operates in a first mode; during the rising period when the voltage established across the load exceeds the first voltage but does not exceed a second voltage, the two-terminal current controller operates in a second mode; and during the rising period when the voltage established across the load exceeds the second voltage, the two-terminal current controller operates in a third mode; during the rising period when the voltage established across the load drops to a third voltage smaller than the second voltage after exceeding the second voltage, the two-terminal current controller is configured to: operate in the second mode when a difference between the second and third voltages exceeds a first hysteresis band; and operate in the third mode when a difference between the second and third voltages does not exceed the first hysteresis band; the two-terminal current controller includes: