Comments by "Anders Juel Jensen" (@andersjjensen) on "Asianometry"
channel.
-
10
-
10
-
10
-
10
-
10
-
10
-
10
-
10
-
9
-
9
-
9
-
9
-
9
-
9
-
I'm not a financial advisor, but the reason that TSMC isn't crazy over valued like some other tech companies is probably that they're enormously predictable in their future income. They book wafer agreements 3-5 years in advance, build fabs that can fulfill that demand and then run them at ever lower margins until they're "worn out". This means they can't suddenly invent a hot new thing and become the latest fad overnight. But they have consistently delivered on their profit projections, and since they produce for every player in the AI space (Even Intel is using them for their NPUs, instead of using their own fabs for that), Apple, a hefty portion of the Android phone market, and most the PC space in general, I think you could do worse than buy TSMC stock. That is, if you buy stocks to generate passive income. If you buy stocks in the hope they'll gain value, so you can sell them for a profit, then TSMC is probably not the best bet.
9
-
9
-
9
-
9
-
9
-
8
-
8
-
8
-
8
-
8
-
8
-
8
-
8
-
8
-
8
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
7
-
6
-
6
-
You're right, but the way you worded the second part it becomes hard for laymen to understand that when you say "charges" you're not referring the act of "charging up the battery" but rather referring to "the amount of Coulombs".
So for anyone curious:
Watt (rate of electricity consumption) = Joules/second ("energy chucks per time unit")
Watthours (total electricity consumption) = Joules/second * 3600 seconds (so the seconds cancel out and you're left with 3600 Joules)
However, Watt is also equal to Volts * Amps (sorry physics teachers for the laymanified notation).
This means that when you have a, say, 3.7V battery rated for 1000mAh of capacity you just multiply the two to get it in mWh, which in this case is 3,700mWh. Then divide by 1000 to remove the "milli" part and you're left with 3.7Wh, or divide by 1000 again to get to the kWh you're used to from your electric bill. In this case 0.0037kWh.
But here's the catch: What I just said is complete nonsense... Because a battery does not deliver it's rated voltage from 100% to 0% capacity. The voltage will decline as the battery discharges. This means that you will, in fact, not get 3.7Wh our of the example above. The battery will start at 3.7V but end at around 2.2V (I'm using my Vape battery as an example) before it's sufficiently "flat" to not be able to drive my "device".
And that's the reason why battery capacity is measured in amp-hours (or milliamp-hours for small stuff), as the Watt-hour approach "is bogus" despite it looking more familiar.
You can, however, go V * mAh * 3/4 and get a reasonable approximation for modern lithium batteries. "The constant" will change depending on the battery technology, but I've rambled on for long enough, so I'll spare you all for a lecture on the implications of a battery's internal resistance and how that directly relates to Ohm's Law.
6
-
6