|
|
Tantalum Capacitor B 35V2.2UFIBUW
|
x 1 | |
|
|
Tantalum Capacitor B 35V1UFIBUW
|
x 1 | |
|
|
L7905CV |
x 1 | |
|
|
ATX 90 degree 24-pin adapter |
x 1 |
-5V Mod for ATX Power Supplies
This little PCB is creating the -5V power rail from the -12V rail.
Some older ISA cards require the -5V as a reference voltage. Unfortunately, with the introduction of ATX Power Supplies, this voltage became less important and was eventually removed.
Modern ATX power supplies do no longer deliver -5V.
Nevertheless, with adapters, it is possible to use ATX power supplies to run retro hardware.
With the -5V missing, some hardware may exhibit unpredictable behavior.
An example is the Creative Sound Blaster 2.0 which does not create sound output when -5V is missing.
Since ATX power supplies are way more reliable compared to old AT power supplies,
a solution to re-introduce the -5V rail is necessary.
Fortunately, -5V is only used as a reference voltage and does not need to deliver much power.
Therefore, a simple linear voltage regulator mod is enough.
In this video, you can see one use case for this project:
-5V Mod for ATX Power Supplies
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
- Comments(0)
- Likes(7)
More by BitsUndBolts BitsUndBolts
-
16MB (2x 16Mx4bit +3.3V) SIMM PCBs with dual power supply
This PCB allows you to build the highest capacity 30-pin SIMM modules for use in vintage hardware li...
-
-5V Mod for ATX Power Supplies
This little PCB is creating the -5V power rail from the -12V rail.Some older ISA cards require the -...
-
30-PIN SIMM with EDO-2-FPM Mod
This memory PCB allows you to create high capacity 4MB SIMM modules for older PCs, Macs, and other v...
-
3dfx Voodoo Memory Expansion Board - Rev 1.1
The PCBs are used to clip on the Guillemot MAXI Gamer 3D Voodoo Graphics Accelerator.Usual memory si...
-
3dfx Voodoo Memory Expansion Board - Rev 1.0
The PCBs are used to clip on the Guillemot MAXI Gamer 3D Voodoo Graphics Accelerator.Usual memory si...
-
-
-
-
-
3D printed Enclosure Backplate for Riden RD60xx power supplies
154 1 1 -
-
