Title:
PREVENTING CIRCUIT FOR FORGETTING TO SWITCH OFF POWER SWITCH OF AUDIOO AMP
Document Type and Number:
Japanese Patent JPS5240102
Kind Code:
A
Abstract:
PURPOSE:Alarm sound is output or power switch is automatically cut off by detecting no input of signal into audio amp or output signal over certain period of time.
Inventors:
TERADA MATSUAKI
Application Number:
JP11479475A
Publication Date:
March 28, 1977
Filing Date:
September 25, 1975
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H03F3/181; G10K15/04; G11B3/00; G11B31/00; H02H7/20; H02J1/00; (IPC1-7): G11B31/00; H02H7/20