| 摘要 |
PURPOSE:To enable the battery of a toy to be sufficiently charged constantly by providing a transmitter with a circuit for detecting the state of charging of the battery and causing the circuit to generate a signal when a charge completion signal is delivered to the circuit. CONSTITUTION:A circuit 6 for detecting the state of charging of the battery 12 of a remote-control toy 10 consists of a transistor (Q1) and resistances, (R1), (R2) and (R3). And, an emitter diode 7 is ignited when the voltage of the battery 12 becomes at least a given level. Therefore, when the connection part of the toy 10 is connected to a connector 8 and a charging switch 3 is turned on, the battery 12 of the toy 10 starts to be charged by a battery 5. When the voltage of the battery 12 becomes at least a given level, the detection circuit 6 works to feed a current through the emitter diode 7 thereby igniting it. Accordingly, it is possible to sufficiently charge the battery of an apparatus to be charged con- stantly by confirming that the battery has been sufficiently charged. |
