EP0403602A1 - Gedruckte schaltungen - Google Patents

Gedruckte schaltungen

Info

Publication number
EP0403602A1
EP0403602A1 EP19890910647 EP89910647A EP0403602A1 EP 0403602 A1 EP0403602 A1 EP 0403602A1 EP 19890910647 EP19890910647 EP 19890910647 EP 89910647 A EP89910647 A EP 89910647A EP 0403602 A1 EP0403602 A1 EP 0403602A1
Authority
EP
European Patent Office
Prior art keywords
board
printed circuit
circuit board
track
rack according
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.)
Withdrawn
Application number
EP19890910647
Other languages
English (en)
French (fr)
Inventor
Brian Purdy Goddard
David John Pearce
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.)
Racal Datacom Ltd
Original Assignee
Racal Datacom Ltd
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
Application filed by Racal Datacom Ltd filed Critical Racal Datacom Ltd
Publication of EP0403602A1 publication Critical patent/EP0403602A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0263—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1417—Mounting supporting structure in casing or on frame or rack having securing means for mounting boards, plates or wiring boards
    • H05K7/1418—Card guides, e.g. grooves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
    • H05K7/1457—Power distribution arrangements

Definitions

  • This invention relates to removable printed circuit boards, particularly but not exclusively large, complex boards making many- connections to the back plane of a unit.
  • connections may be made via tracks on the board itself, the edge of the board plugging into an edge connector, when large numbers of connections are involved it is customary to use connectors having multiple rows of pins or sockets (hereinafter reference is made to pins for simplicity), e.g. DIN 4162 96 way connectors having three rows of 32 pins.
  • pins e.g. DIN 4162 96 way connectors having three rows of 32 pins.
  • the pins in such connectors are necessarily quite fine and if these pins are to be used for carrying power to the board, a plurality of pins have to be parallelled up to provide adequate current carrying capacity. ⁇ This is not only wasteful use of pins but potentially unreliable. It also suffers from the problem that the power supply connections are made at the same time as the signal connections. ,
  • Fig. 1 is a plan view of a printed circuit board
  • Fig. 2 is a section to a larger scale through one edge of the board in its guide rail.
  • the printed circuit board 10 has a plurality of connectors 11 mounted along its rear edge for plug-in connection in conventional manner to complementary connectors on the back plane of a rack.
  • the rack can be essentially conventional, apart from its guide rails and is therefore not illustrated. It may accommodate a substantial number of printed circuit boards (cards) slid into the rack parallel to one another.
  • the pins of the connectors 11 are connected to the printed circuit board tracks and vents to the various components mounted on the board.
  • the power supply for the components is not provided through the connectors 11.
  • an extended track 12 running almost the length of the lefthand edge of the card. In this example this is the OV rail of the card.
  • the track 12 extends near to the back of the board.
  • Fig.2 there is shown a portion of the bottom wall 15 of a rack into which the cards are inserted lying in spaced, parallel, planes.
  • a guide rail 16 for slidably receiving one edge of the card 10.
  • This guide rail is formed from insulating material housing a resilient metal channel 18 having a metal tongue or tongues 19 such that the printed circuit board can be slid into the channel to be gripped reasonably firmly therein.
  • the tongue(s) 19 moreover make good electrical contact with the corresponding conductive track, e.g. the track 12, on the edge of the board.
  • the insulator is attached to the wall in any convenient manner, e.g. by rivets (not shown) through the base of the insulator registering with holes in the base of the metal channel 18, such that the latter is not shorted to the wall 15.
  • the channels 18 on the two edges of the printed circuit board are utilized as the means for conducting power to the board and are thus connected in this example to the OV and 5V terminals respectively of a power supply.
  • the OV track 12 initially makes contact with the OV channel 18, because this track 12 extends well towards the back of the boards.
  • the first operation on insertion therefore, in electrcal terms, is to establish signal ground throughout the board.
  • the first 5V track 13 (Fig.l) terminates a greater distance from the rear of the board than the track 12. Accordingly +5V is applied to the track 13 after OV has been applied to the track 12.
  • the 5V track 13 is connected to the components on the board 10 through a current limiting circuit 20 which serves to reduce the initial surge of current drawn by the card as the various capacitances thereon are charged up. This reduces the risk that the inserted card will cause a disturbance on the power supply sufficient to upset the operation of cards already inserted in the rack.
  • the conductive channels 18 in the rack are all permanently energised and it is intended that the insertion or removal of one card will not interfere with the running of the other cards in the rack.
  • An additional benefit with the method of power application is that signal lines can be suitably set prior to insertion into the signal connectors.
  • PCB self diagnostics can be carried out prior to insertion into the signal connectors.
  • Mechanical interlocking could be employed to prevent a faulty card reaching the signal connectors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)
EP19890910647 1988-09-08 1989-09-05 Gedruckte schaltungen Withdrawn EP0403602A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8821072 1988-09-08
GB8821072A GB2222726A (en) 1988-09-08 1988-09-08 Printed circuit boards

Publications (1)

Publication Number Publication Date
EP0403602A1 true EP0403602A1 (de) 1990-12-27

Family

ID=10643254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890910647 Withdrawn EP0403602A1 (de) 1988-09-08 1989-09-05 Gedruckte schaltungen

Country Status (3)

Country Link
EP (1) EP0403602A1 (de)
GB (1) GB2222726A (de)
WO (1) WO1990003101A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110730585A (zh) * 2019-10-12 2020-01-24 苏州浪潮智能科技有限公司 一种折叠通电导轨

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5086372A (en) * 1990-06-29 1992-02-04 Amp Incorporated Card edge power distribution system
US5063303A (en) * 1991-02-08 1991-11-05 Racal Data Communications Inc. Soft start circuit
US6038139A (en) * 1996-06-18 2000-03-14 Siemens Aktiengesellschaft Mounting rack for plug-in electrical printed circuit board assemblies having means for damped dissipation of electrostatic potentials
DE29610694U1 (de) * 1996-06-18 1997-07-17 Siemens AG, 80333 München Baugruppenträger mit Mitteln zur Ableitung elektrostatischer Spannungen bei einsteckbaren Baugruppen
US6422877B1 (en) * 2000-10-05 2002-07-23 Motorola, Inc. Apparatus for coupling power to an electronics module

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB911379A (en) * 1960-09-27 1962-11-28 Rotax Ltd Method of forming a contact block for use in the reading of punched cards
US3546539A (en) * 1968-05-28 1970-12-08 Texas Instruments Inc Integrated circuit mounting panel
GB1399006A (en) * 1972-03-28 1975-06-25 Int Computers Ltd Circuit boards
GB1408203A (en) * 1972-09-19 1975-10-01 British American Tobacco Co Printed circuit cards
FR2254927A1 (en) * 1973-12-14 1975-07-11 Constr Telephoniques Current supply unit for printed cct boards - uses at least one current rail with contacts, perpendicular to cct boards
DK111577A (da) * 1977-03-15 1978-09-16 I O Pedersen Elektrisk kredsloebsplade
DE2850232C3 (de) * 1978-11-20 1981-10-22 Siemens AG, 1000 Berlin und 8000 München Einschubrahmen mit Leiterplatte
FR2596232A1 (fr) * 1986-03-21 1987-09-25 Cgr Ultrasonic Bac a cartes electroniques
DE3634462A1 (de) * 1986-10-09 1988-04-21 Licentia Gmbh Mit profilschienen eines baugruppentraegers verbindbare halteschiene

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9003101A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110730585A (zh) * 2019-10-12 2020-01-24 苏州浪潮智能科技有限公司 一种折叠通电导轨

Also Published As

Publication number Publication date
WO1990003101A1 (en) 1990-03-22
GB8821072D0 (en) 1988-10-05
GB2222726A (en) 1990-03-14

Similar Documents

Publication Publication Date Title
US4579406A (en) Printed circuit board connector system
US4164362A (en) Modular card cage with multiple power bus bar means
EP0039175A2 (de) Elektrische Steckeranordnung für Leiterplatten
US4574332A (en) Cage apparatus for printed circuit boards and method for preventing sharp spikes in the signal applied to said printed circuit boards
EP0228278A2 (de) Elektrische Verbinderanordnung
US6361897B1 (en) Dual terminal battery for modular power supply and power supply
MY103199A (en) Slab-like jack module
JPS6211470B2 (de)
DE3566941D1 (en) Structure system for electrical-information technology apparatuses
EP0320250A1 (de) Elektrischer Verbinder für flache flexible Kabel
US4755145A (en) Electrically connecting circuit board system
EP0219134B1 (de) Stromversorgungsanordnung
MY116929A (en) Edge connector for a printed circuit board
US3710197A (en) Power interlock for electronic circuit cards
ATE223143T1 (de) Aufbausystem zum einschub von elektrischen flachbaugruppen
EP0403602A1 (de) Gedruckte schaltungen
US5525063A (en) Backplate with signal bus
US3375408A (en) Test fixture for keyed printed circuit board
JP2002529939A (ja) ラックアセンブリにフロント要素の心出し接触部品及び独立した受入れ接触部品、特に接触片を備えたプリント板用モジュールシステム
EP0420471A2 (de) Elektrische Verbinder
US4821149A (en) Substrate mounting device
SE9300997L (sv) Anordning för att ansluta ett kretskort till ett anslutningsplan
DE1008762T1 (de) Elektrisches Gebläse und elektrischer Verbinder
SU663339A3 (ru) Соединительное устройство
US4794488A (en) Substrate mounting device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900509

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR IT NL

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: RACAL-DATACOM LIMITED

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19920828