File:Sinclair ZX Spectrum Issue 4B 7805 regulator and power socket.jpg
Summary
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Close crop of a Sinclair ZX Spectrum Issue 4B main board showing the 7805 regulator (a National Semiconductor LM340T5, date code 8424) bolted by a slotted screw to the heatsink, next to the 2.1 mm power socket at the top right of the board. Cropped for Sinclair ZX Spectrum Voltage Regulator Replacement.
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 | 11:08, 25 October 2026 | | 641 × 674 (62 KB) | Josh (talk | contribs) | Image for the Spectrum regulator guide |
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