NE555 as chargepump.... how does that work?

cooder

Well-known member
Just looking at Vfe schematics to learn and understand stuff, Peter uses the NE555 chip which is dirt cheap as chargepump in some circuits.
This example is from the Fiery Red Horse. Can someone explain me how that works and what voltages can we coax out of that, what are advantages and downsides to the more usual TC1044 circuits? Thanks!

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