GB1440022A - Methods of manufacturing electric resistance elements - Google Patents

Methods of manufacturing electric resistance elements

Info

Publication number
GB1440022A
GB1440022A GB2848773A GB2848773A GB1440022A GB 1440022 A GB1440022 A GB 1440022A GB 2848773 A GB2848773 A GB 2848773A GB 2848773 A GB2848773 A GB 2848773A GB 1440022 A GB1440022 A GB 1440022A
Authority
GB
United Kingdom
Prior art keywords
layer
beams
core
channels
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2848773A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19722238557 external-priority patent/DE2238557C3/de
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1440022A publication Critical patent/GB1440022A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
    • H01C17/24—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/0823—Devices involving rotation of the workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/351—Working by laser beam, e.g. welding, cutting or boring for trimming or tuning of electrical components

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Optical Integrated Circuits (AREA)
  • Laser Surgery Devices (AREA)
  • Laser Beam Processing (AREA)
  • Manufacturing Optical Record Carriers (AREA)
GB2848773A 1972-08-04 1973-06-15 Methods of manufacturing electric resistance elements Expired GB1440022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722238557 DE2238557C3 (de) 1972-08-04 Verfahren und Vorrichtung zum Abgleichen von zylindrischen Schichtwiderständen

Publications (1)

Publication Number Publication Date
GB1440022A true GB1440022A (en) 1976-06-23

Family

ID=5852726

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2848773A Expired GB1440022A (en) 1972-08-04 1973-06-15 Methods of manufacturing electric resistance elements

Country Status (13)

Country Link
JP (1) JPS4959257A (fr)
AT (1) AT322675B (fr)
BE (1) BE803194A (fr)
BR (1) BR7305339D0 (fr)
ES (1) ES417541A1 (fr)
FR (1) FR2195041B1 (fr)
GB (1) GB1440022A (fr)
HU (1) HU169621B (fr)
IT (1) IT992728B (fr)
LU (1) LU66978A1 (fr)
NL (1) NL7306267A (fr)
SU (1) SU574174A3 (fr)
ZA (1) ZA734894B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321227A (en) * 1991-07-26 1994-06-14 Societe Nationale Industrielle Et Aerospatiale Method and apparatus using a laser beam to deeply cut a material covering a substrate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1060668A (fr) * 1975-10-28 1979-08-21 Albert S. Ashmead Methode de fabrication du clapet d'alguilles de machines a tricoter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321227A (en) * 1991-07-26 1994-06-14 Societe Nationale Industrielle Et Aerospatiale Method and apparatus using a laser beam to deeply cut a material covering a substrate

Also Published As

Publication number Publication date
LU66978A1 (fr) 1973-04-19
HU169621B (fr) 1976-12-28
AT322675B (de) 1975-06-10
BE803194A (fr) 1973-12-03
DE2238557A1 (de) 1974-02-21
FR2195041B1 (fr) 1977-09-09
ZA734894B (en) 1974-06-26
SU574174A3 (ru) 1977-09-25
DE2238557B2 (de) 1976-07-08
ES417541A1 (es) 1976-03-01
BR7305339D0 (pt) 1974-08-22
FR2195041A1 (fr) 1974-03-01
NL7306267A (fr) 1974-02-06
JPS4959257A (fr) 1974-06-08
IT992728B (it) 1975-09-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees