[sdiy] reamp/patenting in US

Magnus Danielson cfmd at swipnet.se
Tue Sep 4 21:44:35 CEST 2001


From: harry <harrybissell at prodigy.net>
Subject: Re: [sdiy] reamp/patenting in US
Date: Mon, 03 Sep 2001 21:33:42 -0400

> It works better if you have a state-variable filter and center that on
> the line frequency... Crank up the Q and you can run the microwave
> (oven) as well...

Ah! Hmm... yeah, I've gotta try that one. I usually use the spare
energy for the toaster thought.

> Don't use the moog ladder though... the reduction in passband gain means
> that you can't increase the efficiency that way...

Well, that is not much of a trouble when you hit the 50 Hz with the
resonance, since the passband damping is below that and well, we don't
really care about that energy in this case.

If you are going to run your 16 2/3 Hz train you naturally have to
take some care to ensure that your filter gets all the way down there.

Cheers,
Magnus




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