Patent ID: 6426611
Filing Date: 2002-07-30
Classification: H02M,H05B

Abstract:
A constant voltage controller for maintaining a power signal at a constant voltage at a plurality of electrical loads comprising:a switch receiving an input AC power signal from a secondary portion of a power transformer and outputting an output AC power signal to the plurality of electrical loads; a controller coupled to the switch; a first logic rectifier circuit coupled to the controller for inputting the output AC power signal and a return AC power signal and outputting a voltage feedback signal to the controller; a second logic rectifier circuit coupled to the controller and for inputting the output AC power signal and outputting a current feedback signal to the controller; and a reset controller including a third logic rectifier circuit coupled to the controller for inputting the input AC power signal and outputting a reset signal to the controller, wherein the controller maintains a voltage level of the output AC power signal at a specified level by controlling the operation of the switch based upon the reset signal, the current feedback signal and the voltage feedback signal.