| 摘要 |
PURPOSE:To improve the reliability of a battery type automatic controller which is operated by a battery by improving the operation stability of the controller. CONSTITUTION:In a transmitter 1 provided with a microcomputer 2 which is operated by the electric power continuously supplied from a lithium battery 5 and a communication control section 10 which is operated by the electric power supplied from the battery 5 through a switching circuit 20 controlled by means of the microcomputer 2, a transistor 21 which is controlled by means of the microcomputer 2 is used as the switching circuit 20 and a capacitor 29 is connected between the base 25 and emitter 22 of the transistor 21. |
