File:Sinclair ZX Spectrum Issue 4B DC-DC converter area.jpg
Summary
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Crop of a photograph of a Sinclair ZX Spectrum Issue 4B main board, showing the DC-DC converter area at the right-hand edge: the coil (silkscreen COIL) beside the LM340T5 7805 regulator on its heatsink, the electrolytics C34 and C50, C46 and C74, and TR4 and TR5 at the bottom of the picture. Cropped and reduced for Sinclair ZX Spectrum DC-DC Converter Repair.
Source
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Cropped from File:Sinclair ZX Spectrum Issue 4B Motherboard.jpg on Wikimedia Commons (retrieved 2026-10-25), originally published on Flickr by AUIC Oficial on 29 April 2018 (RetroMadrid 2018).
Author
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AUIC Oficial, photograph by Fernando Sáenz
Licence
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Public domain: marked by the author with the Public Domain Mark on Flickr and recorded on Commons as Template:PD-author-FlickrPDM.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:45, 25 October 2026 | | 996 × 1,600 (298 KB) | Josh (talk | contribs) | Crop for the DC-DC converter repair guide |
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