| 摘要 |
<p>PURPOSE:To prevent an injurious effect caused by the use of a continuous long time by setting in advance a continuous use time and a continuous disconnection time, at the time of using an electronic apparatus. CONSTITUTION:By an ON/OFF signal from a power source circuit 6, a continuous ON/OFF time measuring circuit 7 is operated, and its output and a use/ disconnection set time set by a time setting part 5 are processed by a comparing circuit 8 and outputted to a control circuit 9. The control circuit 9 outputs an ON1 signal, an ON2 signal, an OFF1 signal and an OFF2 signal to a warning circuit 10, at the time of ON ON, at the time of OFF ON, at the time of ON OFF, and at the time of OFF OFF, respectively by a variation of an input signal. The warning circuit 10 outputs a signal to a warning display part 4, when the OFF1 signal is inputted, and when an inhibition switch 5 is not inputted within a set waiting time, a data save circuit 11 is operated, and after save is completed, an OFF signal is outputted to the power source circuit 6, and during a continuous disconnection time, a power source output is disconnected.</p> |
