| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a portable telephone set, whose configuration is simplified and whose waiting and speech communication time can be made long and which is small-sized, light in weight and low in cost and has high reliability, by converting electricity generated by a power generating device into a prescribed direct current and by storing the electricity outputted from an electric controller regulating the voltage, current and polarity of the direct current. SOLUTION: A power generating device 18 generates electricity by vibrations of when a portable telephone set is carried daily. Alternating current electric generated by the device 18 is converted into a direct current by an electricity controller 17 and also regulated into voltage, current and a polarity which are appropriate to charge an internal storage battery 16. Direct current electricity regulated by the controller 17 is supplied to the battery 16 and charges the battery 16. Thus, it is possible to increase the waiting time and speech communication time of a portable telephone set 11. Further, the device 18 is simply composed of a resonator, a spring suppressing the attenuation of the resonator and a coil, and the cost of the set 11 with the power generating device can be reduced and its reliability is improved.</p> |
