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Commodore 128 Tower

C128T - C128T-Case - C128T-PSU - C128T-UPS


C128T PSU ver.4

ATX PSU

Power Supplied: 180W ATX PSU.

This PSU provides the DC supply needed for the Commodore System. With its high current ratting, it will provide plenty of power for the SuperCPU needs. 5v and 12v sappily is all that needed for the c128, 1571 and Fan.

The Power On link is just a wire link between pin 13 and 14 on the mother board power connector. This allow me just switch on the mains and the ATX will just start, a diagram below:
ATX Power On Link Note: In the lasted Ver.4, this link is used to switch on the ATX.

ATX PSU

9v ac PSU

Power Supplied: 9v ac 1Amp.

The 9v ac is made form a 240v ac to 9v ac 1Amp Transformer with a 1Amp Quick Blow fuse for safety. This goes directly to the c128.

The two front tamales was covered up for a good reason, they are 240v ac on them.

9v dc PSU

Power Supplied: 9v dc 1Amp plugs.

The left PSU is running all day and all week to proved the power for the RamLink.
The right PSU is switched on by the power switch to proved power for the FD-2000.

After all the problems I had with the 9v dc sappily, I have decide to use the original PSU that came with the RamLink and FD-2000. I modified them buy simply drilling the three tamales and bolting wires to them. Plus the Live and Natural tamales where well insulated (240v is not healthy when touch).

PSU v4 Diagram:

 


C128T PSU ver.3

The v4 only had a few wires modify from this v3 to make it run good. I do not know why (Again!), By switching the Main 240v power on/off to the ATX has some how made the whole system unstable. So v4 was made and all faults was solved.

Hear is a Diagram of v3


C128T PSU ver.2

I was not rely happy about this design, maybe that the ATX need to be on all day. But, the fate was sealed for this v2 is when the 9v Regulator blew, so roll on v3.

Hear is a diagram of v2


C128T PSU ver.1

This worked well, but, something happens now and then that crosses the c128 to reset. So, not wanting to damage the commodore I then rebuild to v2.

Hear is a diagram of v1



Commodore Cheetah is made by Allen Monks © - Commodore Cheetah started on December 30 2000

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