Hacking the Alpine PSU February 28, 2014 07:02PM |
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Re: Hacking the Alpine PSU February 28, 2014 07:32PM |
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Re: Hacking the Alpine PSU February 28, 2014 08:11PM |
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Re: Hacking the Alpine PSU February 28, 2014 08:27PM |
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Re: Hacking the Alpine PSU March 01, 2014 05:13AM |
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Re: Hacking the Alpine PSU March 01, 2014 06:30AM |
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Re: Hacking the Alpine PSU March 01, 2014 07:21AM |
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Re: Hacking the Alpine PSU March 01, 2014 07:31AM |
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Re: Hacking the Alpine PSU March 01, 2014 08:16AM |
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Re: Hacking the Alpine PSU March 01, 2014 11:32AM |
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Re: Hacking the Alpine PSU March 01, 2014 01:27PM |
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Re: Hacking the Alpine PSU March 02, 2014 05:11AM |
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Quote
bobtidey
Here are some load tests. I didn't bother too much with 3.3V loading. I checked it was 3.3V due to the local sense. The previous scheme and the modded one makes no load or usage of the 3.3V supply.
Re: Hacking the Alpine PSU March 02, 2014 05:57AM |
Registered: 10 years ago Posts: 256 |
Quote
Radian
Quote
bobtidey
Here are some load tests. I didn't bother too much with 3.3V loading. I checked it was 3.3V due to the local sense. The previous scheme and the modded one makes no load or usage of the 3.3V supply.
Sure, nothing actually makes use of the 3.3V rail from the ATX PSU but switch-mode power supplies in general have several protection schemes and one of them is sensing minimum load and shutting down if the load is below specification. In most cases this is to guarantee that voltage regulation is maintained - i.e. some output stages can become unstable without sufficient loading. The Ormorod kit came with a junction box containing dummy load resistors for the 3V and 5V rails for this reason. With your mods, your PSU would now appear to be operating without a dummy load on the 3.3V rail - I was just curious to know if this was OK.
Re: Hacking the Alpine PSU March 02, 2014 06:55AM |
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Re: Hacking the Alpine PSU March 02, 2014 09:23AM |
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Re: Hacking the Alpine PSU March 02, 2014 04:57PM |
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Re: Hacking the Alpine PSU March 03, 2014 05:01AM |
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Re: Hacking the Alpine PSU March 03, 2014 06:04AM |
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Re: Hacking the Alpine PSU April 17, 2020 09:47AM |
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