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Shell Is Immediately Closing All Of Its California Hydrogen Stations | The oil giant is one of the big players in hydrogen globally, but even it can't make its operations work here. (insideevs.com)

submitted 9 months ago by L4s@lemmy.world to c/technology@lemmy.world

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Shell Is Immediately Closing All Of Its California Hydrogen Stations | The oil giant is one of the big players in hydrogen globally, but even it can't make its operations work here.::The oil giant is one of the big players in hydrogen globally, but even it can't make its operations work here. All seven of its California stations will close immediately.

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[–] Brkdncr@lemmy.world 1 points 9 months ago (1 children)

I thought auto ranging power supplies were typically for voltage but not frequency.

[–] AA5B@lemmy.world 1 points 9 months ago (1 children)

Every one I’ve seen gives ranges like 100-240v ac, at 50-60 Hz.

Then electrical grids are large complex systems defined in analog days and subject to variances for weather, usage, distances, etc, so they also need to support that variability

[–] Brkdncr@lemmy.world 1 points 9 months ago* (last edited 9 months ago) (1 children)

Even larger appliances like refrigerators, ovens/ranges, etc? Some of these might be 10+ years old.

[–] AA5B@lemmy.world 1 points 9 months ago

Digital power supplies usually support most electrical grids

Analog electrical stuff must handle the allowed variability in the grid and may be able to adjust from 60Hz to 50 Hz: for example a clock probably uses a crystal to establish a reliable frequency instead of relying on the grid frequency. Some labels may include this info, especially since everything has been globalized. However it’s going to depend. Some will. Some won’t.

However analog electrical can’t usually adjust between 120v and 240v, or similar, depending on where you are. This is the part where things can fail spectacularly