Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1981-03-26
1983-05-24
Griffin, Donald A.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
F02P 1100
Patent
active
043852408
ABSTRACT:
An audio device for motor vehicles includes a first battery which supplies power to an automobile, and a second battery arranged to be charged by the first battery when the output voltage of the second battery falls to a certain value. A switching arrangement operates to uncouple the second battery from the first battery, and to connect noise sensitive load circuits to the second battery, exclusively, when a cassette or cartridge is loaded into a cassette loading portion of the device. Accordingly, the noise sensitive load circuits are removed from the influence of electrical noise introduced on the power supply lead of the first battery through operation of the automobile.
REFERENCES:
patent: 4075504 (1978-02-01), Gnaedinger
patent: 4264855 (1981-04-01), Ghibaudo et al.
patent: 4305004 (1981-12-01), Tanaka et al.
Griffin Donald A.
Olympus Optical Company Limited
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