• 14 Posts
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Joined 2 years ago
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Cake day: June 15th, 2023

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  • The Prius PHEV manual states that there is a battery conditioner: both battery-cooling when its hot and and battery-heating when its cold.

    I assume that a significant amount of the electric charge from L1 charger is going towards battery-heating. Ex: I have a 1000W L1 charger (measured from the wall). If 100W is going to heating, then that’s a 10% loss before other voltage-conversion losses. (The Prius is a 400V battery, so 110V to 400V will incur additional losses).

    The L2 charger likely has 100W of heating in these cold nights as well, but at 3,300W charging, that’s only a 3% loss. Far more efficient. Furthermore, 220V is closer to 400V, so there will be less voltage-conversion losses associated with L2 charging.

    A lot of reasons to favor L2 charger installation. So that’s going to be my recommendation to anyone doing Electric.



  • Did you forget about the election?

    Immigrants from Springfield, Ohio are eating cats and dogs.

    And now Trump is moving for mass deportations.


    The good news is that Trump is ignorant and bad at his job. I dunno how long it’d take to setup detention camps for immigrants but it’s definitely coming.

    I’d say that any Hispanic or Latino, even Puerto Ricans, are at risk. Depending on which state you are in. Arizona is known to throw out US Citizens for deportation if the sheriff thinks you look funny.














  • Netflix has a substantial number of caching boxes owned by Netflix on the edge.

    This means that a neighborhood has a cache server with 20TB of video serving everyone in the neighborhood (and maybe also the next 3 or 4 neighborhoods). So if everyone watches the same episode they only pay for one cloud download / bandwidth cost.

    Netflix outsources cloud for their core infra but then runs very very heavy edges around the world. It’s backwards but if you think about Netflix and the watching pattern of neighborhoods (ex: neighbor likely tells friends a new show is good, then everyone watches it) it’s to the benefit of Netflix to run their infra like this.

    I wouldn’t be surprised if these caching servers help each other out like BitTorrent either to avoid central cloud bandwidth costs.