| 摘要 |
<p>PURPOSE:To perform extensive functional trimming with high accuracy, by functionally trimming resistors disposed at appropriate intervals continuously along the longitudinal direction of an electrode which is formed linearly on an insulating substrate. CONSTITUTION:An electrode (conductor) 1 is provided linearly on an insulating substrate and resistors (R1) 2 and (R2) 3 are formed continuously along the electrode on one side of it in such a way that respective resistors are out of contact with each other. When it is required to improve the accuracy of functional trimming, it is preferable usually to make the resistance value in one resistor higher than that of the other resistor. As to functional trimming, trimming of the resistor (R1) 2 is performed, first of all, so that errors which are short of the desired functions may remain within the range of + or -5-10%. Further, fine adjustment is carried out after trimming the resistor (R2) 3. This approach makes an area where the resistors are formed small and changes the value of resistance extensively and thus, functional trimming is performed to attain the goal of electrical characteristics with high accuracy.</p> |
