| 摘要 |
<p>PURPOSE:To obtain a highly accurate printed resistor by arranging a conductor so that a part thereof overlaps a resistor at a position opposite to a trimming groove start position to thereby allow the resistor to be accurately trimmed. CONSTITUTION:Electrodes 13, 14 are respectively formed so that they partially overlap a resistor 11 in which a trimming groove 12 is formed on one end thereof in the direction orthogonal to the length direction thereof. A conductor 15 is formed so that it partially overlaps the resistor 11 on the other end of the resistor 11 in the direction of intersecting the length direction thereof. At the time of trimming start, the resistance value corresponding to the remaining margin of the groove 12 is large, whereby a current flowing through the conductor 15 is small. Therefore, resistance variations caused thereat are the same as those at a conventional trimming start. As the trimming operation progresses, the current flowing through the conductor 15 is increased, thereby decreasing resistance variations of the resistor and improving the accuracy of the resistor. Accordingly, a highly accurate printed resistor can be obtained.</p> |
