GB1128940A - Printed circuit assembly - Google Patents
Printed circuit assemblyInfo
- Publication number
- GB1128940A GB1128940A GB34758/67A GB3475867A GB1128940A GB 1128940 A GB1128940 A GB 1128940A GB 34758/67 A GB34758/67 A GB 34758/67A GB 3475867 A GB3475867 A GB 3475867A GB 1128940 A GB1128940 A GB 1128940A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cards
- printed circuit
- lands
- printed
- modules
- 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
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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
Abstract
1,128,940. Printed circuit assemblies. INTERNATIONAL BUSINESS MACHINES CORP. 28 July, 1967, No. 34758/67. Heading H1R. [Also in Division H2] A circuit assembly comprises a plurality of sub-assemblies 6, 7, 8, 9 (Fig. 1, not shown) each including a plurality of printed circuit cards 12 to 15 which support and provide interconnections between a plurality of integrated circuit modules 22 (Fig. 3) and Fig. 2 (not shown), arranged around an aperture 26 in each card, through which aperture extends an air distribution tube 11 formed by four multi-layer printed circuit cards 32 (Fig. 5) carrying printed wiring interconnecting the printed circuit cards 12 to 15. As shown Fig. 7, between each pair of adjacent cards is a spacer 36, 37. Spring fingers 51 are soldered to printed lands at the edges of the apertures 26 of the cards 12 to 17. When assembling the cards and spacers axially on to the tube 11, the fingers do not exert much pressure thereon. Camming surfaces 54 on the spacers 36, 37 however, press the fingers 51 against the tube lands 33 (Fig. 5), as axial force is applied to the stack of cards and spacers by a screw 43 on a tie-bar 40 acting on an end cap 41. Printed circuit interconnection cards 16, 17 which may or may not carry modules provide input/output connections to the circuit assembly. Printed lands around the central aperture S of 16, 17 are connected by the spring fingers to the printed circuit tube, and are connected to lands around their outer edges. The outer edge lands of cards 16, 17 are connected by conventional connectors and tape cables to the interconnection cards of the other sub-assemblies (Fig. 1, not shown). The micro-modules 22 (Fig. 2, not shown) each comprise integrated circuits on a substrate and encapsulated in a metal can. Electrical connection pins, projecting from the substrate, are soldered into holes in the printed circuit cards. Cooling air from a fan passes through the tubes 11, out through apertures therein, which register with the spaces between the cards, and across the micro-modules. Plated holes and strips are provided at the outer edges of each card and are connected to the circuitry for testing purposes.
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9634A FR96241E (en) | 1967-07-28 | Circuit assembly. | |
GB34758/67A GB1128940A (en) | 1967-07-28 | 1967-07-28 | Printed circuit assembly |
GB7012/68A GB1217621A (en) | 1967-07-28 | 1968-02-13 | Circuit assembly |
FR1571823D FR1571823A (en) | 1967-07-28 | 1968-06-26 | |
JP4399568A JPS464509B1 (en) | 1967-07-28 | 1968-06-26 | |
US741700A US3508117A (en) | 1967-07-28 | 1968-07-01 | Circuit assembly |
DE19681766742 DE1766742A1 (en) | 1967-07-28 | 1968-07-12 | Circuit arrangement from plugged together circuit cards |
NL6810220A NL6810220A (en) | 1967-07-28 | 1968-07-19 | |
CH1103368A CH468145A (en) | 1967-07-28 | 1968-07-23 | Electrical circuit assembly with cooling device |
DE19681766817 DE1766817C3 (en) | 1967-07-28 | 1968-07-24 | Electrical circuit assembly with cooling device |
JP5256568A JPS479651B1 (en) | 1967-07-28 | 1968-07-26 | |
US797477A US3527989A (en) | 1967-07-28 | 1969-02-07 | Circuit assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB34758/67A GB1128940A (en) | 1967-07-28 | 1967-07-28 | Printed circuit assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1128940A true GB1128940A (en) | 1968-10-02 |
Family
ID=10369603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34758/67A Expired GB1128940A (en) | 1967-07-28 | 1967-07-28 | Printed circuit assembly |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS464509B1 (en) |
GB (1) | GB1128940A (en) |
-
1967
- 1967-07-28 GB GB34758/67A patent/GB1128940A/en not_active Expired
-
1968
- 1968-06-26 JP JP4399568A patent/JPS464509B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS464509B1 (en) | 1971-02-03 |
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