Title:
AUDIO AMPLIFIER CIRCUIT FOR TELEVISION RECEIVER
Document Type and Number:
Japanese Patent JPH05161090
Kind Code:
A
Abstract:
PURPOSE: To obtain an easy to see pattern by eliminating rattling noise sound due to vibration of a cabinet or a cathode ray tube and of vibration of a shadow mask caused by an audio output even when the audio output is very large.
CONSTITUTION: The circuit is provided with diodes 25, 26 used to detect a DC voltage proportional to the sound output level and the voltage is divided to provide a base current to a negative feedback transistor(TR) 30 and a collector current in response to a current amplification factor of the TR 30 is negatively fed back to a bus control terminal 10 of a sound volume sound quality control circuit 3.
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Inventors:
KOBAYASHI HARUO
Application Number:
JP32432191A
Publication Date:
June 25, 1993
Filing Date:
December 09, 1991
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H03F3/12; H04N5/60; H04N5/64; H04R3/04; (IPC1-7): H03F3/12; H04N5/60; H04N5/64; H04R3/04
Attorney, Agent or Firm:
Mamoru Takada (1 person outside)