Detector for voltage ripple of power network for TV receiver


Application Number: 00108091
Application Date: 2000.06.13
Publication Number: 1328402
Publication Date: 2001.12.26
Priority Information:
International: H04N5/44;H04N17/04
Applicant(s) Name: TCL King Brand Electronics Co Ltd (Shenzhen)
Address:
Inventor(s) Name: Hu Qiusheng;Huang Kaihua;Zhang Lingyu
Patent Agency Code: 11127
Patent Agent: liu fang
Abstract A detector for detecting the voltage ripple of power network in TV receiver features that a sampling circuit composed of voltage adder and integrator is connected between the secondary winding of switching transformer and voltage divider whose output is connected with the CPU port of TV receiver. When the voltage of power network is too high or too low, it clan prompt user or automatically turn off the TV receiver. Its advantages are simple structure, high reliability, low cost and low power consumption.