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RE: what spice sez



Here is my attempt to simulate the drlowmu power supply, using the same set-up as I think you have in your SPICE simulation. I took the two chokes, 1 H and 1.1 H, to have DC resistance 9.5 ohms each, and I copied your 100 ohms as a model for the power transformer plus rectifier. (I'm really not sure how good a model that is, which is why I've been a bit hesitant about making strong claims about how the PS would perform.) Anyway, with 30 uF and 50 uF for the two capacitors, my calculation in Mathematica then gives this result for the impedance as a function of frequency.

Chris
(This is a corrected plot. Had a typo before.)



Edits: 01/09/15

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