File:C64 power input and regulator circuit (Service Manual C64-C64C p. 4).png
Summary
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Commodore's power input drawing for the original Commodore 64 board (schematic 326106), from the "Power Supply" section of the circuit theory in the Service Manual C64/C64C (PN-314001-03, March 1992), page 4. It shows the 7-pin power input CN7 (pins 1-3 ground, 4 not connected, 5 +5 V, 6 and 7 9 V AC), the filters L4, L5, C20, C21, C97, C99 and C100, the double-pole power switch SW1, fuse F1 (marked 1 A here), bridge rectifier CR4 (3VM08) with reservoir C19 (2200 µF 16 V) and regulator VR2 (7805) for the "CAN +5" supply, CR5, CR6, C88 and C90 (470 µF 50 V) and regulator VR1 (MC7812CT) for +12 V, the unregulated +9 V, and the 9 V AC on user port pins 10 and 11.
Source
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Rendered from File:Commodore 64 - 64C Service Manual.pdf, PDF page 8 (manual page 4), at 300 dpi and cropped.
Author
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Commodore Business Machines.
Licence
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Copyright Commodore Business Machines. Hosted for preservation and repair reference, with the source cited.
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|---|---|---|---|---|---|
| current | 09:11, 25 October 2026 | | 2,157 × 1,472 (120 KB) | Josh (talk | contribs) | Upload for Commodore 64 power supply and regulator guides |
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