Electronics > Beginners

Power Supply Lower Volts Higher Amps?

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pdenisowski:

--- Quote from: donlisms on March 29, 2023, 06:40:23 pm --- If it's a 300 watt supply, you can have 60v at 5A, or 40v at 7.5A, all limited a bit by the particular design.  Ask the folks who made it for the details.
--- End quote ---

You should definitely look at a power supply's derating curve (see video above) before buying one - this can help you avoid the unpleasant situation of buying a power supply that can produce the desired output power, but not at the voltage and current levels that you want.

For many power supplies, the derating curve is a simple mathematical function, but -- especially in the case of switch-mode supplies -- it's still a good idea to check before buying.

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