| 摘要 |
PURPOSE:To provide a controller for which a thick harness or high voltage specification of the entire circuit is not needed by connecting a first power source, a first switching means and a second power source to a heater in series and by connecting a second switching means to the first switching means and the second power source in parallel. CONSTITUTION:The + (plus) side of a first battery 1 is connected to an air heater 8 through a relay contact of a heater relay 7, and the other end of the heater 8 is grounded. The first battery 1, a first relay contact 3, and a second battery 2 are connected to the heater 8 in series. A second relay contact 4 is connected to the first relay contact 3, and the second battery 2 in parallel, while a third relay contact 5 is connected to the first battery 1 and the relay contact 3 in parallel. A high voltage specification is provided only for the part to which voltage is applied when only a first switching means is closed. Since first and second power supplies connected to each other are in series when the first switching means is closed, and since high voltage is obtained thereby, only smaller current is enough to get the same amount of heating. |
