| 摘要 |
<p>A voltage indicating circuit of a cellular phone battery comprises a battery ( 303 ), and also comprises a cellular phone baseband module ( 301 ) and a battery voltage detecting module (302). The power supply input ports of the cellular phone baseband module ( 301 ) and the battery voltage detecting module ( 302 ) are connected to the positive pole of the battery ( 303 ). The detecting signal output port of the battery voltage detecting module(302)is connected to the communicating port of the cellular phone baseband module ( 301 ). The battery voltage detecting module ( 302 ) detects the output voltage of the positive pole of the battery ( 303 ), and outputs cellular phone battery voltage detecting signal to the cellular phone baseband module ( 301 ) via the detecting signal output port. The cellular phone baseband module ( 301 ) receives the cellular phone battery voltage detecting signal via the communicating port, and indicates the voltage of the battery ( 303 ) according to said cellular phone battery voltage detecting signal. With the voltage indicating circuit of the cellular phone battery, present battery voltage can be acquired without continuous inquiry by software; consequently, the load of the software can be reduced efficiently.</p> |
