How to use a 24V 3A drill motor from a PSU 12V 20A? I'm using a motor that at 24V has 28000rpm, and at 12V only 10000rpm. Is there any step-up that I can use or make to use the PSU as input?
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\$\begingroup\$ Lots of laptops use 19VDC at 3A; a used power adapter should be easy to find. \$\endgroup\$– Whit3rdCommented Jan 24, 2017 at 1:58
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Sure, pay 50 dollars, and you have a good 120 Watt converter that makes 24V from 12V. They are often ment to be used in cars. For that money, you can also buy a power supply of 24V.
