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File:Ferranti Archives MD-SIN-SCH-004 detail, ZX Microdrive head board and base PCB circuit.png

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Original file (2,200 × 1,360 pixels, file size: 3.42 MB, MIME type: image/png)

Summary

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The circuit area of Sinclair Research's drafted ZX Microdrive circuit diagram of 16 September 1983: head board S12100 (IC1 2G007, IC2 78M05, the three-winding head L1) and base PCB S12101 (motor switch Q1 and Q2, LED D5, write-protect micro switch), with the edge-connector bus and its contact numbers at the right ("A IS COMPONENT SIDE"). The title block, which contains a redacted box, is left out. Resized to 2200 px wide. Used on Sinclair ZX Microdrive.

Detail rendered from File:Ferranti Archives MD-SIN-SCH-004 ZX Microdrive circuit diagram on Sinclair Research drawing form, 16 September 1983.pdf.

Licence

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Ferranti Archives 2026: source and terms of use

This scan is part of the Ferranti Archives 2026, a collection of Sinclair-related documents from Ferranti's files, catalogued in 2026 and released through the Happy Little Diodes YouTube channel (video, catalogue). The archive presents the documents for preserving and archiving material of historical interest, and for non-commercial, educational and archival research. Its terms state that consent is strictly limited to non-commercial use, and that any commercial exploitation of the documents or their contents, including use in connection with the manufacture, marketing or sale of goods, is strictly prohibited by Sky UK Limited.

Copyright remains with the rights holders. The file is not freely licensed and is hosted here for preservation and repair reference only, under the archive's terms. Personal information was redacted by the archive before release; if you find any that remains, please tell [email protected].

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Date/TimeThumbnailDimensionsUserComment
current11:43, 18 October 2026Thumbnail for version as of 11:43, 18 October 20262,200 × 1,360 (3.42 MB)Josh (talk | contribs)Upload for Sinclair ZX Microdrive / ZX Interface 1 pages

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