| 摘要 |
The circuit is for giving nozice to user by generating low- pitched call sound not to disturb neighboring people when the switch of a wireless call receiver is in "memory" position. The circuit is composed of a memory (31), a decoder (32) for decoding inputted data, comparing it with the address data stored in the memory (31) and generating the received message, a micro- controller (35) for performing self-test and message processing, a buzzer (38), and the 2nd switching section (Q2) for controlling the voltage (Vbat) applied to the buzzer (38).
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