CONTROL CIRCUITS FOR DIMMING CONTROL

摘要

A control circuit for controlling a current flow through a load is disclosed. The circuit comprises a power converter, a controller and a current control circuit. The power converter converts a first voltage signal to a second voltage signal according to a control signal. The controller couples to the power converter and adjusts the control signal according to the second voltage signal so that the second voltage signal is maintained at a predetermined value. The current control circuit is coupled to the load, and controls the current flow through the load according to a dimming signal to control the load.