Thick film resistance thermometer
Method and apparatus for adjusting electrical networks consisting of synthetic foils
Resistive electrical components
Resistor material, resistor made therefrom and method of making the same Patent #: 4209764
ApplicationNo. 06/263786 filed on 05/14/1981
US Classes:29/593, Including measuring or testing of device or component part29/620, Coating resistive material on a base338/195, Resistance value varied by removing or adding material427/101, Resistor for current control (excludes heating element)427/8MEASURING, TESTING, OR INDICATING
ExaminersPrimary: Hall, Carl E.
Assistant: Echols, P. W.
Attorney, Agent or Firm
International ClassesH01C 17/23 (20060101)
H01C 17/22 (20060101)
AbstractA geometry and method of fabricating thin film resistors which are tolerant of faults in the film and therefore permit attainment of high resistances. The resistor includes a series of connected closed loops (15) each with a member (17) providing a short circuit path. Such members are successively cut and the change in resistance is determined after each cut. This change is compared to certain threshold values to determine the presence or absence of an open circuit fault in each loop. The resistor is then trimmed to its desired value by cutting only the loops where no opens have been discovered.
Field of SearchCoating resistive material on a base