News for hackers. Stuff that matters.

A comment on Intel undercut a standards body to give us the PCI connector. Parent comment

Re:Intel undercut a standards body to give us the PCI connector by m463 on Sunday May 19, 2024 @08:37PM (#40410913)
Might be for transformers windings in vs windings out? I think transformers are pretty efficient, but convert voltage in multiples. I'm not an EE though and don't know if that is how electrical conversion is actually handled in cars.
[ Parent | on HN ]
Re:Intel undercut a standards body to give us the PCI connector by kogepathic on Monday May 20, 2024 @02:34AM (#40412904)
> transformers windings in vs windings out

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

[ Parent | on HN ]
Re:Intel undercut a standards body to give us the PCI connector by klysm on Monday May 20, 2024 @10:01AM (#40415563)
Even if it was AC, the ratio of the number of turns is what matters. I don’t see why 3 would matter there.
[ Parent | on HN ]