APPARATUS FOR PROTECTING A POWER TRANSISTOR OF A BLOWER

摘要

PURPOSE: An apparatus for protecting a power transistor of a blower is provided to initially drive a blower motor not through a power transistor but through a resistance by connecting in parallel a resistance to the power transistor for controlling the rotational operation of the blower motor. CONSTITUTION: An ignition switch(40) is connected to one side of a coil which constitutes a blower relay(70). A blower switching terminal(32) having a control section(30) is connected the other side of the coil which constitutes a blower relay(70). A battery(50) for supplying a voltage is connected to one end of the blower relay, and a coil which constitutes a high speed blower relay(80) is connected to the other end of the blower relay(70). A blower motor(60) is connected in parallel between one side end of the high speed blower relay(80) and the blower relay(70).