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A comment on Intel undercut a standards body to give us the PCI connector. Parent comment
Transformers only apply to AC, where there is a fluctuating magnetic field.
A transformer in a DC circuit is just a physically large (very low resistance) resistor.
The standard practice to convert DC voltage (at least for these voltages) would be a buck converter, which is an active circuit. [1]
[1] https://en.wikipedia.org/wiki/Buck_converter
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Transformers only apply to AC, where there is a fluctuating magnetic field.
A transformer in a DC circuit is just a physically large (very low resistance) resistor.
The standard practice to convert DC voltage (at least for these voltages) would be a buck converter, which is an active circuit. [1]
[1] https://en.wikipedia.org/wiki/Buck_converter