Yes, it is very brute force!!! Very basic in design and simple to make - only the thing is as lossy as a bucket with holes in it!
Want to talk brute force... I have some old drawings of AC line filters, which are really brute force. Values per L and C are not too critical, the inductors were to be home made radials, wound on a dowel rod with 18 awg magnet wire.
Made the drawings back in 1986 from something I saw in a book. Redrew them as excercises in AutoCAD.
The Rl is to load the circuit to around 10% for crude regulation.
Glad to see more Electronics based persons joining the group!!! Feel free to throw in as much info you want to - the rest of the group will be happy for any and all you can contribute [plus not having me babbling to them will certainly make them happy
Minus the Rl, and this PI filter is somewhat common to high power filters. Saw many of them recently for use with high power UPS equipment [see the transformer photos posted in this section, apx. April or May of this year].
P.S. Time for more advanced circuitry, isn't it???