[sdiy] Ladder filter pole

[Magnus Danielson]

From: harry <harrybissell at prodigy.net>
Subject: Re: [sdiy] Ladder filter pole
Date: Thu, 18 Apr 2002 21:49:06 -0400

> One of the difficulties with tubes would be the filiment voltages...
> 
> It could be handled with isolated dc/dc converters.  These are often
> used for H-bridge inverters (Motor Drives etc...)

Well, there is many ways to handle it... experience will tell what works.

> You silly boys....

Really? :^)

> OTOH a tube ladder would be a pretty cool project... send me some
> piccys when you get it working

If you think a tube ladder is silly, then think for a minute on the
guy that made a tube-based DAC!

I know he did an 8-bit DAC that he hooked to his computers
parallel-port for test-purposes. His plan was for a stereo 16-bit
thing. He *knew* it would not give the tube-character, he just wanted
to do it since it was possible to do it. Go figure... ;O)

You've gotta bend the things a little to learn something.

Cheers,
Magnus