C64-psu
About the C64-psu PCB
C64-psu is an open source PCB design by jamarju, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 116 × 74 mm, with 41 components from 31 distinct parts.
Other key parts include the LMR33630A and MAX6399. By type, the board carries 6 connectors, 5 resistors, 3 fuses, 2 ICs, 2 diodes and 2 capacitors.
It belongs with the retro computing and power & battery designs in this gallery.
From the project
Efficient Commodore 64 power supply with overvoltage + overcurrent protection
This is a compact and efficient 9VAC/5VDC power supply for the Commodore 64 with the following features:
230VAC input (but easy to modify for 115VAC operation). 5 VDC output, adjustable, 1.75A max. 9 VAC output, 1.67A max. 6.5 VDC overvoltage protection (latching). Low VDC output ripple (pp @1A). 2A overcurrent protection. Low heat dissipation. Mains overvoltage and noise suppresion.
Main components on the C64-psu
C64-psu bill of materials (BOM)
41 components, 31 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LMR33630A | TI_SO-PowerPAD-8_ThermalVias | U1 |
| 1 | MAX6399 | DFN-8-1EP_3x3mm_P0.65mm_EP1.55x2.4mm | U2 |
| 1 | N-MOS | LFPAK33-PSMN7R5-30MLD | Q1 |
| 6 | Conn_01x01 | spade_4.8mm | J1, J2, J3, J4, J5, J6 |
| 1 | 100n | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Cboot1 |
| 1 | 10u | C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | Cin1 |
| 1 | 220n | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Cinx1 |
| 1 | 68u | C_1210_3225Metric_Pad1.42x2.65mm_HandSolder | Cout1 |
| 4 | 1u | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Coutx1, Coutx2, Coutx3, Cvcc1 |
| 1 | 160mA | 20mm fuse | F1 |
| 2 | 1.67A | 20mm fuse | F2, F3 |
| 1 | S14K300 | RV_Disc_D15.5mm_W5.2mm_P7.5mm | RV1 |
| 2 | S10K20 | RV_Disc_D12mm_W4.5mm_P7.5mm | RV2, RV3 |
| 1 | 10k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Ren1 |
| 1 | 22K | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Rfbb1 |
| 1 | 100k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Rfbt1 |
| 1 | Myrra_UI_39_TRF | Myrra UI 39 trf | TR1 |
| 1 | 10K | Potentiometer_Bourns_3296Y_Vertical | TRIM1 |
| 1 | 160 mA | Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | XF1 |
| 1 | Fuse Holder | Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | XF2 |
Show 11 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1.67A | Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | XF3 |
| 1 | KBU8B | Diode_Bridge_Vishay_KBU | D1 |
| 1 | LED | LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D2 |
| 1 | 10u | L_Bourns_SRR1260 | L1 |
| 1 | 10n | C_Rect_L19.0mm_W5.0mm_P15.00mm_MKS4 | C1 |
| 1 | 3300u | CP_Radial_D18.0mm_P7.50mm | C2 |
| 1 | 4K7 | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R1 |
| 1 | 820k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2 |
| 1 | 680k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3 |
| 1 | 68k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R4 |
| 1 | 150k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R5 |
C64-psu design files
The KiCad project lives in the jamarju/c64-psu repository on GitHub; these links point at the commit this page was built from.
C64-psu: common questions
How big is the C64-psu PCB?
The C64-psu measures 116 × 74 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the C64-psu?
41 components, from 31 distinct parts. The full bill of materials is listed on this page.
Where can I download the C64-psu design files?
From the jamarju/c64-psu repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the C64-psu design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
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