Patent ID: 7741789
Filing Date: 2010-06-22
Classification: G09G,H03L,H05B

Abstract:
1. Locked phase active power current control circuit comprising: a DC source for providing a DC signal to an electronic switch; said electronic switch for receiving said DC signal outputted from said DC source and converting it to a square wave signal and outputting said square wave signal to a driving transformer and a phase detecting unit; said driving transformer for receiving said square wave signal outputted from said electronic switch and supplying it to a load after boosting up the voltage; said phase detecting unit for receiving said square wave signal outputted from said electronic switch and detecting a phase signal of said square wave and outputting said detected phase signal to a current intercepting unit; said current intercepting unit for receiving said detected phase signal outputted from said phase detecting unit and comparing said detected phase signal with a current intercepted at said electronic switch to feed a comparison result back to a square wave controller; and said square wave controller for receiving said comparison result outputted from said current intercepting unit and setting an operating frequency of said electronic switch base on said comparison result.