Thread
Beefier Power Supply for SE/30
Yes, but if the pwoer supply has 10 to 20 amps or so, flickering/shaking under load isnt going to be a problem, especially if the power going to the CRT sweep circuitry is filtered through an external filter as i mentioned before. Ill give it a shot once I find a suitably sized power supply. the tiny ones I have at work only have 0.1A on the -12v which is too low. So i cant use them, I would say if the filter is good enough, any EMI spikes that occur on the digital side isnt going to get into the sweep circuitry, and vice-versa.
And since I am partnered with a Car audio shop, getting filters for testing isnt going to be an issue.
Yes, those are the types of filters I mean from the automotive world. They are pi-filters. at least should be.
The biggest problem for me right now is time. I am strapped of it. I have been doing a major R&D project for a display corporation on new scoreboard technology, and thats been taking up nearly all of my time, even on weekends to get the hardware design and programming done.
And since I am partnered with a Car audio shop, getting filters for testing isnt going to be an issue.
Yes, those are the types of filters I mean from the automotive world. They are pi-filters. at least should be.
The biggest problem for me right now is time. I am strapped of it. I have been doing a major R&D project for a display corporation on new scoreboard technology, and thats been taking up nearly all of my time, even on weekends to get the hardware design and programming done.
I mean subtle instability issues that may be difficult to attribute a cause to. One example is I tried a loaded SE/30 config with multiple PDS cards and I started getting random freezing and system bombs. It seemed like after several restarts I was able to run benchmarks flawlessly for maybe 20 mins, so I am thinking the PSU's got warmed up. I checked the voltages with a DMM and they were close to nominal, but I don't really know what was going on. Another example could be your floppy drive errors discussed earlier.Please define "phantom issues" more specifically.
Good idea to check there and some useful info here thanks. It does seem like the sweep specs. are tight.Guide to the Macintosh Family Hardware, Second Edition has more extensive power supply specs for the SE/30 on pages 259-260 that relate to this discussion...
Sounds like a cool project. Thanks for your input so far! It would be great if we could eventually find a reference PSU to use that is commonly available and low cost that can fit into the old chassis for a clean restore. :b&w:Ill give it a shot once I find a suitably sized power supply. ...The biggest problem for me right now is time. I am strapped of it. I have been doing a major R&D project for a display corporation on new scoreboard technology, and thats been taking up nearly all of my time...