Patent ID: 8288960
Filing Date: 2012-10-16
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: when a voltage established across the two-terminal current controller does not exceed a first voltage during a rising period of a rectified AC voltage, the two-terminal current controller operates in a first mode for conducting a second current associated with the rectified AC voltage, thereby maintaining the first current at substantially zero and regulating the second current according to the voltage established across the two-terminal current controller; when the voltage established across the two-terminal current controller is larger than the first voltage and does not exceed a second voltage during the rising period, the two-terminal current controller operates in a second mode for conducting the second current, thereby maintaining the first current at substantially zero and setting the second current to a predetermined value larger than zero; and when the voltage established across the two-terminal current controller is larger than the second voltage during the rising period, the two-terminal current controller operates in a third mode in which the two-terminal current controller is turned off for maintaining the second current at substantially zero.