公开(公告)号：US3916144A

公开(公告)日：1975-10-28

申请号：US45480474

申请日：1974-03-26

Applicant: CRL ELECTRONIC BAUELEMENTE

Inventor： SCHUERMANN WALTER

IPC: H01C17/242 ,  H01C17/245 ,  B26F3/14

CPC classification number: H01C17/242 ,  H01C17/245 ,  Y10T29/49099

Abstract: A method for adjusting the resistance of cylindrical layer resistors comprising utilization of a laser beam. The resistor is rotated about its longitudinal axis at a predetermined rotational speed. Simultaneously therewith, a pulsating laser beam is moved at a predetermined linear speed along a line parallel to the longitudinal axis of the resistor element. The resistor rotational speed is preferably an integral multiple of the linear speed of the laser beam. The impulse time (t) of the laser beam preferably lies within the range from 0.1 to 0.9 of the period time (T). The above relationships produce a resistance element of high quality and having a uniform current density preventing premature burn out of the elements.

公开(公告)号：FR2250460A7

公开(公告)日：1975-05-30

申请号：FR7435455

申请日：1974-10-22

Applicant: CRL ELECTRONIC BAUELEMENTE

IPC: H01C10/32

Abstract: The variable electric resistor has a simple construction and is dust-proof and resistant to vibrations for use in road vehicles. It has a plastic material case (1) with a threaded boss (2). The threaded boss (2) has a central hole to take a plastic material spindle (3) onto which is mounted a cursor and a pivot. The cursor makes contact with an electrically conductive wafer track to provide a variable resistance by rotation of the spindle and the cursor. The cursor is electrically connected to the pivot and the track is connected to two terminals. Connection to the cursor is by means of a terminal (5) integral with a disc in contact with the pivot of the spindle.

公开(公告)号：DE2344684A1

公开(公告)日：1975-03-06

申请号：DE2344684

申请日：1973-09-05

Applicant: CRL ELECTRONIC BAUELEMENTE

Inventor： FINK RUDOLF DIPL-ING

IPC: H01G2/06 ,  H05K3/34 ,  H01G1/035

Abstract: The capacitor is made from a flat ceramic plate which can be round, rectangular or any other desired geometric shape. It is intended for mounting on printed circuit boards without the use of terminal leads. The electrode surfaces are on opposite faces of the plate. There is an open sloping cut out at the circumference, extending from the top surface to the edge of the bottom surface. The bottom is an electrode surface placed in direct contact with the printed wiring. The surface of the cut out is metallised, with the coating applied by a sintering, spraying or silk screening process. It provides access to the top which is the other electrode surface.

公开(公告)号：DE2246573B2

公开(公告)日：1975-01-23

申请号：DE2246573

申请日：1972-09-22

Applicant: CRL ELECTRONIC BAUELEMENTE GMBH, 8500 NUERNBERG

Inventor： FINK, RUDOLF, DIPL.-ING., 8671 SCHOENWALD

IPC: H01G4/30 ,  H01G4/34

公开(公告)号：DE2321849A1

公开(公告)日：1974-11-21

申请号：DE2321849

申请日：1973-04-30

Applicant: CRL ELECTRONIC BAUELEMENTE

Inventor： FINK RUDOLF DIPL ING

IPC: H01G5/22

公开(公告)号：FR2226733A1

公开(公告)日：1974-11-15

申请号：FR7413235

申请日：1974-04-16

Applicant: CRL ELECTRONIC BAUELEMENTE

IPC: H01C17/242 ,  H01C17/245 ,  H01C17/00 ,  H01C7/00

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.

公开(公告)号：DE2261940A1

公开(公告)日：1974-07-04

申请号：DE2261940

申请日：1972-12-18

Applicant: CRL ELECTRONIC BAUELEMENTE

Inventor： SOELLNER WILLI ,  PRELL KARL

IPC: H01C1/148 ,  H01C17/00

公开(公告)号：DE2110739A1

公开(公告)日：1972-09-21

申请号：DE2110739

申请日：1971-03-06

Applicant: CRL ELECTRONIC BAUELEMENTE

IPC: H01C1/02 ,  H01C3/00

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：DE2335648A1

公开(公告)日：1975-01-30

申请号：DE2335648

申请日：1973-07-13

Applicant: CRL ELECTRONIC BAUELEMENTE

Inventor： FINK RUDOLF DIPL-ING

IPC: H03H3/08 ,  H03H9/02 ,  H03H9/00

Abstract: The piezoelectric acoustic surface wave filter prevents reflected waves from interfering with teh direct waves by forming the comb electrodes on the curved surface of a cylindrical or tubular body, onto which after size reduction metal is deposited onto its curved outer surface, followed by oxidising and sintering the metal layer and forming a reoxidised layer beneath the body surface. The reoxidised layer is ground and a second metal layer deposited. A voltage is applied between surface metal layer and the second layer, and the reoxidised layer is polarised. The body surface is then ground and polished to the required size and the curved surface coated with a good conductor by vacuum deposition. A photosensitive layer is then added by dipping, rolling or spraying to the curved surface and a photomask placed over it, corresponding to the shape of the final comb electrodes.