Hi folks. Somehow many of my projects end up in small enclosures, and while I've learned to design for quiet grounding and lead dress, the dreaded diode switching noise often makes an appearance.
There have been a few very informative threads on the subject here, I've been through them and tried most every solution offered - snubbing, slurring, twisting, swearing, you name it.
On a recent project giving me fits, I relocated the bridge rectifier outside of the chassis as an experiment, leaving the rest of the power supply inside the box. This quieted things right down, but obviously is no solution.
Got me wondering about shielding - in the myriad of modern semiconductors, is there such thing as a rectifier in a shielded package?
Or, if I were to experiment with mu metal or something, which composition might be most effective?
Lastly, I've only been using full wave bridge configuration. Theoretically, would switching noise be more or less prominent in half wave? Or even voltage doubler circuits?
There have been a few very informative threads on the subject here, I've been through them and tried most every solution offered - snubbing, slurring, twisting, swearing, you name it.
On a recent project giving me fits, I relocated the bridge rectifier outside of the chassis as an experiment, leaving the rest of the power supply inside the box. This quieted things right down, but obviously is no solution.
Got me wondering about shielding - in the myriad of modern semiconductors, is there such thing as a rectifier in a shielded package?
Or, if I were to experiment with mu metal or something, which composition might be most effective?
Lastly, I've only been using full wave bridge configuration. Theoretically, would switching noise be more or less prominent in half wave? Or even voltage doubler circuits?
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