I noticed that barney is looking for a good AT psu so I decicded to rebuild a generic crapy one I have laying around, just to see if it works out. Might be good for some old Pentium retro rig.
I replaced the EMI filter components, added a 4A graetz bridge, E13007 primary switchers, Samxon 470/200 primary caps, EI35 transformer, MBR3045 for 5 volt and SBL1660 for the 12 volt rail. Added the missing pi-filter coils. Yageo SY and Arcotronics ESX caps.
Had to replace two small 4.7uf and 22uf caps, I put Nippon KME there.
...also I fited bigger heatsinks and a temperature controlled fan circuit. I'll put the pcb into a grey anodized Skyhawk psu case. It has holes for both the AC switch and the periphelial cables. This desing has an LM494 pwm chip an a few transistors for the regulation. I'll add a 220k trimmer to where just two resistors where soldered underside the pcb for voltage adjustment.
I hope my modifications worth it and this thing will live
Also cabe gauge will be awg18 for the periphelial and the AT style motherboard connectors.
I replaced the EMI filter components, added a 4A graetz bridge, E13007 primary switchers, Samxon 470/200 primary caps, EI35 transformer, MBR3045 for 5 volt and SBL1660 for the 12 volt rail. Added the missing pi-filter coils. Yageo SY and Arcotronics ESX caps.
Had to replace two small 4.7uf and 22uf caps, I put Nippon KME there.
...also I fited bigger heatsinks and a temperature controlled fan circuit. I'll put the pcb into a grey anodized Skyhawk psu case. It has holes for both the AC switch and the periphelial cables. This desing has an LM494 pwm chip an a few transistors for the regulation. I'll add a 220k trimmer to where just two resistors where soldered underside the pcb for voltage adjustment.
I hope my modifications worth it and this thing will live

Also cabe gauge will be awg18 for the periphelial and the AT style motherboard connectors.
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