

A1200-psu
My personal open source Amiga works (A1200 PSU schematic, etc)
- Size
- 147 × 76 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 39
- Pads
- 163
- Tracks, vias
- 291, 14
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 8 Feb 2023
- Updated
- 19 Aug 2023
Overview
A1200-psu is an open-source printed circuit board by nbolton, from the nbolton/amiga repository on GitHub. It is a 2-layer board of 147 × 76 mm with 64 parts on 39 nets, routed with 291 tracks and 14 vias.
It is built around the TL431D, 1N4742A and 1N5230B, with the BYV26E among its other parts. Its parts include 21 capacitors, 18 resistors, 11 diodes, 4 inductors and 3 ICs. It belongs with the power boards of this library.
Main components
4TL431D
SOT-23-40℃~+125℃ 100mA 2.495V~36V 2.495V~36V 40uA Adjustable Parallel ±0.4% SOT-23 Voltage Reference ROHSALJVoltage Reference1N4742A
DO-41-65℃~+200℃ 1 Independent 11.4V~12.6V 12V 1W 5uA@9.1V 700Ω 9Ω DO-41 Zener Diodes ROHSonsemiZener Diodes1N5230B
插件,D1.53xL3.05mm-65℃~+200℃ 1 Independent 1.9kΩ 19Ω 4.465V~4.935V 4.7V 500mW 5uA@2V 插件,D1.53xL3.05mm Zener Diodes ROHSonsemiZener DiodesBYV26E
SOD-57UncategorisedXCH
README
hardware/a1200-psu/readme.mdAmiga 1200 PSU (Power Supply Unit)
- PCB P-No: 30501-001 A
- PSU P-No: 391029-02
- Rating: UK 220-240 V 300 mA
TODO: Update README to reflect PR https://github.com/nbolton/amiga/pull/2 (thanks @ChewChewie)
This A1200 schematic is based on A500 PSU schematic by Greg McCarthy (https://github.com/StormTrooper)
Original A500 PSU schematic: https://github.com/baldengineer/bit-preserve/tree/master/Amiga/A500.PSU.312503-03






Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 4n7 | Capacitor_THT:C_Rect_L11.0mm_W2.8mm_P10.00mm_MKT | C2, C3, C7, C8 |
| 3 | ? | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R14, R15, R16 |
| 3 | L_Small | Inductor_THT:L_Radial_D6.0mm_P4.00mm | L2, L3, L4 |
| 2 | 1000uF | Capacitor_THT:CP_Radial_D8.0mm_P5.00mm | C15, C18 |
| 2 | 10nF | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C1, C4 |
| 2 | 220nF | Capacitor_THT:C_Rect_L28.0mm_W8.0mm_P22.50mm_MKS4 | C5, C6 |
| 2 | 47uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C16, C17 |
| 2 | MR852 | Amiga 1200:Diode_Heatsink | D9, D10 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R10 |
| 1 | 10R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11 |
| 1 | 10n | Capacitor_THT:C_Disc_D9.0mm_W5.0mm_P10.00mm | C10 |
| 1 | 150R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R7 |
| 1 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 1N4007 | Amiga 1200:Diode_Bridge | D4 |
| 1 | 1N4742A | Diode_THT:D_DO-35_SOD27_P10.16mm_Horizontal | D2 |
| 1 | 1N4935 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D5 |
| 1 | 1N5230B | Diode_THT:D_DO-35_SOD27_P10.16mm_Horizontal | D6 |
| 1 | 1N54xx | Diode_THT:D_5W_P12.70mm_Horizontal | D7 |
| 1 | 1R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R9 |
| 1 | 1nF | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C20 |
| 1 | 1uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C19 |
| 1 | 20k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8 |
| 1 | 220pF | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C9 |
| 1 | 220uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C14 |
| 1 | 240k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 250V T 1A | Fuse:Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | F1 |
| 1 | 25k5 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 30R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | TH1 |
| 1 | 330R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R17 |
| 1 | 33uF | Capacitor_THT:C_Radial_D16.0mm_H31.5mm_P7.50mm | C11 |
| 1 | 460R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 470pF | Capacitor_THT:C_Rect_L7.0mm_W4.5mm_P5.00mm | C21 |
| 1 | 47R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R12 |
| 1 | 47mH | Filter:Filter_FILTERCON_1FPxx | L1 |
| 1 | 47uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C12 |
| 1 | 500k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18 |
| 1 | 680R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 68k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R5 |
| 1 | 821k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R4 |
| 1 | 82uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C13 |
| 1 | ? | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R13 |
| 1 | A1200-PSU-TR | Amiga 1200:Transformer | TR1 |
| 1 | AC-In | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-3-3.5-H_1x03_P3.50mm_Horizontal | J1 |
| 1 | BYV26E | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D3 |
| 1 | Conn_01x02 | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | J3 |
| 1 | DC-Out | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-5-2.54_1x05_P2.54mm_Horizontal | J2 |
| 1 | MR852 | Diode_THT:D_5W_P12.70mm_Horizontal | D8 |
| 1 | P2N60 | Amiga 1200:TO-220-3_Vertical_Staggered | Q1 |
| 1 | PC817 | Package_DIP:DIP-4_W7.62mm | U2 |
| 1 | TL431D | Package_TO_SOT_THT:TO-92_Wide | U3 |
| 1 | UC3844_DIP8 | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | Yellow | LED_THT:LED_D3.0mm | D11 |
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Questions
How big is the A1200-psu PCB?
It measures 147 × 76 mm and has 2 copper layers, 1.6 mm thick.
What parts does the A1200-psu use?
64 parts, built around the TL431D, 1N4742A, 1N5230B and BYV26E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the A1200-psu KiCad files?
From the nbolton/amiga repository on GitHub, at the commit this page was made from: the board is hardware/a1200-psu/a1200-psu.kicad_pcb and its schematic hardware/a1200-psu/a1200-psu.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the A1200-psu design in my own project?
Its repository states no licence, so its author keeps all rights: ask nbolton before reusing the design.