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A comment on Inside the 8086 processor, tiny charge pumps create a negative voltage. Parent comment

Re:Inside the 8086 processor, tiny charge pumps create a neg... by kens on Sunday July 26, 2020 @12:54PM (#23958362)
The substrate has some capacitance to hold the voltage steady. The diode blocks the 0V so the substrate only "sees" the -5V.(It acts as a peak detector, not a low pass filter.)
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