Title:
PROTECTIVE CIRCUIT FOR TELEVISION RECEIVER
Document Type and Number:
Japanese Patent JPH0993452
Kind Code:
A
Abstract:
To stop the operation of a switching power supply circuit completely when intermittent oscillation of the switching power supply circuit due to the operation of an overcurrent limit circuit continues.
A secondary output voltage of a switching power supply circuit is given to a microcomputer 13. When the voltage given to the microcomputer 13 repeats ON/OFF due to intermittent oscillation of the switching power supply circuit, the microcomputer 13 provides an output of a signal to deenergize a power supply relay 9 to stop supply of power to the switching power supply circuit.
Inventors:
HOTTA CHIHARU
Application Number:
JP24725595A
Publication Date:
April 04, 1997
Filing Date:
September 26, 1995
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H04N3/18; H02H3/08; H02H3/20; H02H7/20; (IPC1-7): H04N3/18; H02H3/08; H02H3/20; H02H7/20
Attorney, Agent or Firm:
Tomoyuki Takimoto (1 person outside)
Next Patent: TELEVISION RECEIVER