![]() Fancy discrete regulators do well at blocking the high frequency components, but add cost and complexity to a PS. Traditional regulators do very well at low frequencies, but have lousy characteristics at high frequencies which means a fair amount of those high frequency components from the cap-only filter get through to the regulator. That sawtooth produces lots of high frequency components that the regulator has to deal with. ![]() The traditional cap only filter (transformer, diode bridge, big cap) produces raw DC with a sawtooth riding on top. John Swenson on the benefits of a choke-filtered linear power supply: Plus R-core transformers, due to the gapless construction of the core, are mechanically silent. And in comparisons powering a DAC or other audio-signal-handling component, the sonic benefits ranged top-to-bottom, cymbals and piano to deep bass. ![]() Just powering the computer, the difference-between the R-core and a toroidal transformer in the bass was shocking.
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