Mobile communication device having protection circuit on handset side
First Claim
1. A hand-held electric device, said device comprising:
- a housing;
a main circuit installed within the housing;
a battery detachably attached to the housing, when the battery is attached to the housing, the battery electrically connects with the main circuit to form a loop such that the battery provides electric power for the operation of the main circuit;
a first protection circuit installed within the housing, the first protection circuit comprising a first protection controller and a first control switch installed in the loop; and
wherein when the first protection controller detects an abnormal voltage or current occurring in the loop, the first protection controller transmits a protection control signal to the first control switch to cut off the loop, so as to protect the main circuit from being damaged by the abnormal voltage or current.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention provides a hand-held electric device and a method for protecting the main circuit of the device. The device includes a housing, a main circuit installed within the housing, a protection circuit installed within the housing, and a battery detachably attached to the housing. When the battery is attached to the housing, the battery electrically connects with the main circuit to form a loop, so as to provide electric power for operations of the main circuit. The protection circuit includes a protection controller and a control switch installed in the loop. When the protection controller detects an abnormal voltage or current, the protection controller transmits a protection control signal to the control switch to cut off the loop, so as to protect the main circuit from being damaged by the abnormal voltage or current.
22 Citations
20 Claims
-
1. A hand-held electric device, said device comprising:
-
a housing;
a main circuit installed within the housing;
a battery detachably attached to the housing, when the battery is attached to the housing, the battery electrically connects with the main circuit to form a loop such that the battery provides electric power for the operation of the main circuit;
a first protection circuit installed within the housing, the first protection circuit comprising a first protection controller and a first control switch installed in the loop; and
wherein when the first protection controller detects an abnormal voltage or current occurring in the loop, the first protection controller transmits a protection control signal to the first control switch to cut off the loop, so as to protect the main circuit from being damaged by the abnormal voltage or current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 20)
-
-
11. A protection method for a main circuit of a hand-held electric device, the hand-held electric device also comprises a housing, within which the main circuit is installed, and a battery detachably attached to the housing, when the battery is attached to the housing, the battery electrically connects with the main circuit to form a loop such that the battery provides electric power for operation of the main circuit, said method comprising the steps of:
-
providing a first protection circuit installed within the housing, the first protection circuit comprising a first protection controller and a first control switch installed on the loop;
detecting condition of voltage or current on the loop via the first protection controller;
transmitting, by the first protection controller, a protection control signal to the first control switch when the first protection controller detects an abnormal voltage or current in the loop; and
turning off the first control switch to cut off the loop, so as to protect the main circuit from being damaged by the abnormal voltage or current. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
Specification