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Old 1st July 2007, 01:06 PM   #1
jives11 is offline jives11  Europe
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Default Max PSU voltage with SI T-amp

Hi,

anyone have any idea what the maximum safe voltage you can use with the SI T-amp ?

I have a failry beefy 15v DC supply and wonder if it's saafe to use. T-amp says 12v but not sure if it has any safety/regulation
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Old 1st July 2007, 08:37 PM   #2
Pano is offline Pano  United States
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15 volts will cook it.

I don't like to go much over 13V. Some guys have run them at 13.8V without immediate trouble, others have fried the chip.

I would consider 13.8 to be the limit of what is safe, but feel better about lower voltages.
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Old 2nd July 2007, 01:12 PM   #3
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I tried different voltages and was checking the chip temperature with an infrared thermometer. I did have a small aluminum computer memory chip heatsink on it.

I had one running at 13.8 volts, but the chip generated quite a bit of heat. At 14v it went into thermal shutdown. I eventually decided on 13.2v. At this level, the chip ran at least 10-15 degrees C cooler than at 13.8.

While the chip does have thermal protection, word is that continued operation at high temperatures will eventually degrade/destroy the chip.

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