| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suggest an air conditioner for a vehicle correct false recognition of ON/OFF of a fan switch generated in a microcomputer. <P>SOLUTION: This air conditioner is constituted of a power source circuit 41 having a voltage conversion circuit 24 connected to a battery 23 under closing of an ignition switch 22 and a charge/discharge circuit holding output voltage of the voltage conversion circuit 24 for prescribed time just after opening of the ignition switch 22, a changeover switch signal circuit 27 connected to the battery 23 under closing of the ignition switch 22, provided with a transistor 44 which becomes conductive by turning OFF the fan switch 28 and becomes non-conductive by turning ON the fan switch 28 and transmitting an ON/OFF signal of the fan switch 28 to the microcomputer 21, and a signal power source circuit 46 for supplying discharge voltage of the charge/discharge circuit to the changeover switch signal circuit 27 during prescribed time just after opening of the ignition switch 22. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
