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Apr29-08, 12:34 PM
Sci Advisor
HW Helper
P: 8,953
Switch mode psus have no business being anywhere near lab equipement, however well you filter/shield them. We had one guy who went to the lengths of rebuilding the PC with linear supplies - although he was insane!
There is a lot to be said for running preamps from batteries, a 12v car battery will run most equipement for a long time and you would have a hard job building a cleaner supply!