AC Voltage is specified in RMS volts, which is based on the average power the AC transmits. The peak voltage (top of the sine wave) is 1.414x the RMS voltage. The insulator only cares about the peak before it breaks down, so because DC doesn't waste time at lower voltages, can transmit more power for the same insulation.

These are coax cables, just by the nature of the external physical shielding required (steel cable sheath). So, the EMF should be contained inside and not affected by the salt water. But, I'm not an expert there and could be missing something.

You might be interested in structured ASICs, which allow for substantial reuse of masks between different products. At the extreme was a via-only definition product where all interconnects were specified with one mask (and the via masks were among the cheapest to make since they are very uniform).

In regular ASIC development, we've had extra unrouted transistors available to wire in case of a mistake (so hopefully the respin involved just some new metal layers). Techniques like FIB can be used to test fixes to lower the number of respins, too. I'm not sure how much of this was automated to maximize chances of being useful.

https://en.wikipedia.org/wiki/Structured_ASIC_platform

The Orin has 6xI2S ports internally, so that would work up to 16*6 = 96 microphones, which is a good number. But it looks like maybe only 3 are brought out & on different dev board connectors [1]? As with a lot of design, the devil is in the details. An FPGA could be easier to configure if you need more than 96 microphones.

My notes:

ICS-52000 $3.50, 20 kHz

ICS-41350 $1.05, 40 kHz

SPH0641LU4H-1 $1.45, 80 kHz+

[1] https://docs.nvidia.com/jetson/archives/r34.1/DeveloperGuide...

The main thing that gets checked is the worst-case timing analysis for every branch condition. And there are stack monitors to monitor if the stack is growing in size.

Look at Rapita System's website for more info ... we don't use them, but they explain it well.

- GPS positioning is more accurate if the satellites it sees come from a variety of angles (GDOP), so the satellites near the horizon are valuable.

- Aircraft pitch and roll, so a fixed antenna like this would lose precision as it turns to make an approach - just about the worst possible time.

It's difficult to make an antenna with a sharp cutoff to limit the ground vs. above-ground. So, most anti-jammers will use beamforming to cancel out interference in one or more specific directions. So, the null in the antenna moves to follow the interference.

GDOP: https://en.wikipedia.org/wiki/Dilution_of_precision_(navigat...

I don't get this. What does a game console manufacturer do that Apple does not? Both provide hardware, system-level APIs, dev systems, developer support, customers. In the old days, game manufacturers didn't even provide a sales channel.

And when you say Apple provides nothing, my above list is pretty solid. In the old days, developer margins were way slimmer, with physical stores taking a 50% cut on top of the console licensing fees and physical manufacturing.

- too low pressure, meaning that the door might have been leaking before it blew out.

- too high pressure, meaning that the door had extra force on it.

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