File:Phihong PSM-5341 schematic (TT and Mega STE copy).png
Summary
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Phihong's schematic of the PSM-5341 switching power supply (drawing PES-30391, revision 01, drawn by Amy Chen, 1990), on one sheet, from a copy marked "TT/MSTE" by hand: the power supply used in the Atari TT030 and Mega STE. It shows the mains input (switch SW, fuse F1 2 A 250 V, filter NF, PT 10SP005L), the bridge D1–D4 (1N5395), the reservoirs C6 (120 µF 400 V) and C7 (10 µF 400 V), the UC3844 controller IC1 and MOSFET Q1 (MTP6N60) with current-sense resistor R13 (0.33 Ω), the transformer T1, the +12 V/2 A, +5 V/7 A, −12 V/0.3 A and −5 V/0.4 A outputs (−5 V from a 7905, IC2), the TL431 and PC111 optocoupler regulation loop, the Power Good circuit Q2–Q4 and the fan output, with the factory alignment table for R23 and R24. Rendered from page 8 of File:Phihong PSM-5341 Power Supply Specification and Schematic.pdf.
Source
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File:Phihong PSM-5341 Power Supply Specification and Schematic.pdf, page 8 (rendered 2026-10-25), from exxos's copy at https://www.exxosforum.co.uk/atari/last/psu/index.htm.
Author
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Phihong Enterprise Co., Ltd.
Licence
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Copyright Phihong Enterprise Co., Ltd. Hosted for preservation and repair reference, with the source cited.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:52, 25 October 2026 | | 2,200 × 1,607 (539 KB) | Josh (talk | contribs) | Phihong PSM-5341 schematic for TT030 power supply guide |
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