| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a stabilized dimmer for a vehicle reducing fluctuation due to an ambient temperature in a simple and inexpensive constitution of the dimmer for the vehicle used for lighting control of a display panel and a control panel for the automobile. <P>SOLUTION: An output part 7C of an amplifier 7 of an oscillation circuit 20 is connected to the ground via a diode 22 and a grounding resistor 23 laid in series, an anode of the diode 22 is connected to the output part 7C, a contact point 22A between the cathode of the diode 22 and the grounding resistor 23 is connected to a non-inverting input part 7A via a feed back resistor 21, so that the dimmer for the vehicle is constituted. This constitution can provide a dimmer for the vehicle having a simple and inexpensive constitution and hardly fluctuating the brightness for the vehicle. <P>COPYRIGHT: (C)2004,JPO |
