12 volts from the USB port. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Power Supplies
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A voltage of 5 V from the power source is output to the USB port of the personal computer.
Many peripheral devices not only communicate with a computer via a USB port, but are also powered by it.
In order to be able to power devices designed for 12V voltage from the USB port, you can make a step-up converter, the circuit of which is shown in the figure. It gives a voltage of 12 V at a current of up to 80 mA.
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- Radioconstructor 2009№2
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