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    Thin film resistor anodizing and monitoring circuit
    2.
    发明授权
    Thin film resistor anodizing and monitoring circuit 失效
    薄膜电阻测量和监测电路

    公开(公告)号：US3586618A

    公开(公告)日：1971-06-22

    申请号：US3586618D

    申请日：1968-02-05

    申请人： WESTERN ELECTRIC CO

    发明人： BURNS WILLIAM S JR ,  OWENS JAMES L ,  PATTON GEORGE A

    IPC分类号： C25D21/12 ,  B01K3/00

    CPC分类号： C25D21/12

    摘要： CIRCUIT. THE TIMING CIRCUIT IS INITATED WHEN THE ANODIZING VOLTAGE REACHES A PREDETERMINED MAGNITUDE FOR TERMINATING THE ANODIZING IS THE RESISTANCE FAILS TO INCREASE TO THE PREDETERMINED VALUE WITHIN A SET PERIOD OF TIME.

    AN ANODIZING AND MOINTORING CIRCUIT ALTERNATIVELY APPLIES AN ANODIZING VOLTAGE TO A THIN FILM RESISTOR AND MOMITORS THE RESISTANCE TO INCREASE THE RESISTANCE TO A DESIRED VALUE. THE ANODIZING VOLTAGE IS CONTINUALLY INCREASED DURING THE ANODIZING AND MONITORNG UNTIL THE ANODIZING IS TERMINATED BY THE RESISTANCE INCREASING TO A PREDETERMINED VALUE OR BY THE OPERATION OF A TIMING