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On Monday 20 Mar 2017 13:19:59 thelma@×××××××××××.com wrote: |
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> On 03/20/2017 12:12 PM, J. Roeleveld wrote: |
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> > On March 20, 2017 6:36:25 PM GMT+01:00, thelma@×××××××××××.com wrote: |
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> >> I have a small box "VIA Eden Processor 1200MHz" it runs my asterisk and |
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> >> hylafax but it is powered by those external 12V adapters (12V 5A). |
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> >> |
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> >> They don't usually last long, max 2-years or less. I have a spare |
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> >> unit: |
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> >> Switching Adapter Power Supply. |
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> >> The box is in remote location so if it goes down due to PS I have to |
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> >> there and restart it, it shut down twice on me this morning; I think |
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> >> this adapter is going slowly. |
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> >> |
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> >> If find/connect 12V adapter with higher Amps 10A or 15A will it help |
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> >> extend the live of the these external power supplies? |
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> >> |
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> >> Or take one of the old PS from an old case and solder the tip to 12V |
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> >> line is better solution? |
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> > |
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> > Most cheap 12V adapters are just that. Cheap. I would invest in a quality |
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> > unit that is actually designed for long term 24/7 use. |
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> > |
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> > A higher amp might help as it won't be stressed as much. But also consider |
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> > adding cooling as it's the high temperatures and inadequate cooling that |
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> > kills them. |
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> > |
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> > -- |
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> > Joost |
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> |
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> These 12V 5A adapters are small (~2x4x1in) external adaptors, they |
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> failed on my several times. They are not design with cooling system and |
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> yes they do run warm especially when run 24/7. |
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> |
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> I even had standard case power supply fail on me twice, so yes I try to |
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> buy them with extra watts capacity and most importantly I always ask for |
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> one with Japanese capacitors. |
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> |
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> -- |
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> Thelma |
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|
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I had an old Linksys NSLU2 which had a PSU failure a few months after I |
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connected a large USB drive to it. The USB drive was drawing more current |
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than the PSU could cope with in continuous operation (it was running 24-7). I |
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opened the PSU and replaced the capacitors with higher rating components. |
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This lasted just under a couple of years. After that I used a higher amperage |
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PSU from a laptop. I can't recall the exact difference in amps. The original |
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was 5V 2A and I used something like 5.5A, which lasted for a long time without |
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any problem. BTW, besides the size also check the polarity of the pin to make |
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sure you do not blow the target device. |
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-- |
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Regards, |
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Mick |