Automatic prevention of inadvertent operation of electronic devi

Details Automatic prevention of inadvertent operation of electronic devi Automatic prevention of inadvertent operation of electronic devi

1996-04-25

1998-05-19

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural load circuit systems

Selectively connected or controlled load circuits

307 36, 307 37, 307 38, 307139, 200 51R, 200 5109, 200 5111, 200 5113, 200 5116, 439188, 439296, 439603, H02J 306

Patent

active

057539804

ABSTRACT:
Portable electronic equipment is disclosed which includes a source of power and operational circuitry. A load device, which may be internal or external to the equipment, is coupleable to the operational circuitry. A switch is coupled between the power source and the operational circuitry and connects the power source to the operating circuitry only when the load device is coupled to the operational circuitry. In portable audio equipment, for example, the switch connects the power source to the operational circuitry only if an external or the internal speaker is coupled to the operational circuitry.

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patent: 4633048 (1986-12-01), Komatsu
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patent: 5281859 (1994-01-01), Crane
patent: 5436511 (1995-07-01), Nigawara et al.
patent: 5513999 (1996-05-01), Fry et al.
patent: 5565714 (1996-10-01), Cunningham

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