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RE: An additional question for Blackdog or others...

No difference. A linear power supply uses a "linear regulator" which is a regulator using a transformer, rectifier, filter capacitors and a regulator circuit employing either off the shelf integrated circuits or a discrete transistor circuit.
A regulated power supply can employ a switching or SMPS power supply which is whole different can of worms, or can be a linear. It's a more generic term. Both work though.
A regulated power supply will supply a constant voltage regardless of it's load (up to it's limits). An unregulated supply (like most wall warts) will vary it's voltage depending on load. Your 9V wall wart will probably be 10 -12 volts when not connected to the DAC, and drop down when connected.
Dan Santoni


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