C64-wedge psu
About the C64-wedge psu PCB
C64-wedge psu is an open source PCB design by timperi, published on GitHub under the MIT license. It is a 2-layer board measuring 70 × 54 mm, with 22 components from 16 distinct parts.
Other key parts include the LM2576T-ADJ. By type, the board carries 6 capacitors, 5 diodes, 3 resistors, 2 inductors, 1 IC and 1 LED.
It belongs with the retro computing designs in this gallery.
From the project
A replacement PCB for the C64 Wedge PSU
A replacement PCB for the C64 Wedge PSU.
This PCB is a direct replacement for the PCB in the “wedge” shaped C64 PSU. The old linear regulator, which often fails and can cause overvoltage, is replaced with a modern switching regulator. All components are through-hole.
The KiCad PCB was reworked for rev 2.0 (current silk 2.1): U1 (LM2576) is placed closer to the wedge middle wall (the inner case wall along that edge of the PCB — not the outer wedge shell). That frees vertical space for the TO-220 heatsink and usually means little or no lead forming on the regulator compared to older layouts.…
Main components on the C64-wedge psu
C64-wedge psu bill of materials (BOM)
22 components, 16 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM2576T-ADJ | TO-220-5_P3.4x3.7mm_StaggerEven_Lead3.8mm_Vertical | U1 |
| 1 | PAD_AC_IN_1 | SolderWire-1.5sqmm_1x01_D1.7mm_OD3.9mm | H1 |
| 1 | PAD_AC_IN_2 | SolderWire-1.5sqmm_1x01_D1.7mm_OD3.9mm | H2 |
| 1 | +5VDC | SolderWire-1.5sqmm_1x01_D1.7mm_OD3.9mm | H3 |
| 1 | GND | SolderWire-1.5sqmm_1x01_D1.7mm_OD3.9mm | H4 |
| 1 | LED | LED_D3.0mm | LED1 |
| 5 | SB540 | D_DO-201AD_P12.70mm_Horizontal | D1, D2, D3, D4, D5 |
| 1 | 100UH 100uH | L_Toroid_Vertical_L24.6mm_W15.5mm_P11.44mm_Pulse_KM-4 | L1 |
| 1 | 22UH 22uH | Bourns-6100-220K-RC | L2 |
| 1 | 5600UF 5600uF | CP_Radial_D18.0mm_P7.50mm | C1 |
| 1 | 2200UF 2200uF | CP_Radial_D16.0mm_P7.50mm | C2 |
| 1 | 220UF 220uF | CP_Radial_D8.0mm_P3.50mm | C3 |
| 3 | 0.1UF 0.1uF | C_Disc_D5.0mm_W2.5mm_P2.50mm | C4, C5, C6 |
| 1 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 3.3K 3.3k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
C64-wedge psu design files
The KiCad project lives in the timperi/c64-wedge-psu-pcb repository on GitHub; these links point at the commit this page was built from.
C64-wedge psu: common questions
How big is the C64-wedge psu PCB?
The C64-wedge psu measures 70 × 54 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the C64-wedge psu?
22 components, from 16 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the C64-wedge psu design files?
From the timperi/c64-wedge-psu-pcb repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the C64-wedge psu design in my own project?
Yes, under the terms of its MIT license, which timperi chose for the repository.
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