| 摘要 |
PURPOSE: A feed box and a water tank open for, and close against, feeding pet animals, and when emptied, a light comes on to warn the emptiness of the feed box or the water tank. CONSTITUTION: The automatic feeder employs a magnetic switch(2), micro switches(10), one attached to the feed box and the other to the water tank mouth, and a timer(17) to connect power for application to the magnetic switch(2) to generate magnetic force to open or close the mouth of the feed box for feeding. |
