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Guild: wafer.space Community
Channel: ℹ️ - Information / ⁉️-questions / Magic PEX capacitor is negative
After: 2026-08-31 11:59 p.m.
Before: 2026-10-01 12:00 a.m.
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[2026-09-27 4:22 p.m.] archit3ch
That's gotta be unphysical, right?


[2026-09-27 7:47 p.m.] 246tnt
AFAIK that happens and it's expected due to hier extraction.


[2026-09-27 7:49 p.m.] 246tnt
Say, C of a net to substrate is extracted for a sub block. But then when you instanciate that sub block, some of the field of the side wall is shielded by something, magic will extract a negative capacitance to "remove" the capacitance that was shielded.

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[2026-09-27 7:55 p.m.] namibj
Yeah, it's when the surrounding extracted subcircuits over-account for the capacitance due to free-field assumptions.


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