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RE: stop monkeying with psud2 hoooey, its never right

I wasn't referring to the link, but to SPICE, which is a means of modelling circuitry using a computer in order to make theoretical measurements and performance predictions. SPICE was very expensive software not generally available to hobbyists until Linear Technology began to offer a version for free, named LTspice.

PSUD is almost certainly using some version of SPICE internally, but with a simpler and more limited user interface. Just as one example of its limitations, PSUD can't tell you the output impedance of a power supply over frequency. I consider this a critical characteristic, and I won't build a supply now without analyzing it in SPICE.



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