公开(公告)号：DE2362567A1

公开(公告)日：1975-06-19

申请号：DE2362567

申请日：1973-12-17

Applicant: CRL ELECTRONIC BAUELEMENTE

Inventor： SCHUERMANN WALTER DIPL ING ,  GOETZE HANS CHRISTOPH DIPL PHY

IPC: H05K1/02 ,  H05K1/03 ,  H05K1/16 ,  H05K7/20

Abstract: The components are mounted on an insulating board and interconnected by conducting traces. In addition to the circuit proper one or several temp.-sensitive resistors are provided on the board surface, which thermally affect the circuit components. The insulating board consists of hardboard or plastic impregnated with synthetic resin, and the temp.-sensitive resistors are separate units. Alternatively the insulating board consists of glass or ceramic, the active components are discrete units and passive components are produced by the thick or thin film method. The temp.-sensitive resistors are discrete units, or are made by the film method.

公开(公告)号：DE2316847A1

公开(公告)日：1974-10-17

申请号：DE2316847

申请日：1973-04-04

Applicant: CRL ELECTRONIC BAUELEMENTE

Inventor： HOPPERT HANS DIPL CHEM DR ,  SCHUERMANN WALTER DIPL ING

IPC: H01C1/034 ,  H01C17/02

公开(公告)号：DE2319899A1

公开(公告)日：1974-10-31

申请号：DE2319899

申请日：1973-04-19

Applicant: CRL ELECTRONIC BAUELEMENTE

Inventor： SCHUERMANN WALTER DIPL ING

IPC: H01C17/242 ,  H01C17/245 ,  H01C17/00

Abstract: 1449548 Resistors DRALORIC ELECTRONIC GmbH 18 Jan 1974 [19 April 1973] 02400/74 Heading H1S The resistance of a film 2 on a cylindrical ceramic body 1 is increased by removing portions 3, which are spaced along a helical path, with a pulsed laser. The laser is scanned longitudinally of the body 1 which is rotated at a speed which may be varied to obtain a desired pattern of the portions 3. The resistance of the film is preferably increased by a factor of between 1 and 10.