Xref: utzoo rec.audio:7593 sci.electronics:3512
Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!mailrus!cornell!uw-beaver!fluke!strong
From: strong@tc.fluke.COM (Norm Strong)
Newsgroups: rec.audio,sci.electronics
Subject: Re: Homebrew audio equipment
Message-ID: <4631@fluke.COM>
Date: 1 Aug 88 14:17:32 GMT
References: <1075@gethen.UUCP> <6315@bloom-beacon.MIT.EDU> <118@luna.UUCP> <5741@pogo.GPID.TEK.COM> <2627@kitty.UUCP> <61833@sun.uucp>
Sender: news@tc.fluke.COM
Organization: John Fluke Mfg. Co., Inc., Everett, WA
Lines: 25

In article <61833@sun.uucp> klein@sun.UUCP (Mike Klein) writes:
}|	Now, before you laugh, consider a reasonable method to implement
}|the use of batteries: use two banks of gel cells, with one bank being
}|charged while the other bank is in use.  Consider, for example, an
}|amplifier rated at 100 watts RMS requiring + and - 24 volt supplies.
}
}More important than the ampere-hour rating will be, as for any power source
}you are using, the output impedance.  Figure what your maximum current
}drain will be at what frequencies, and see if the voltage drop on the power
}high-quality film capacitors to provide high-frequency current.
............................Deleted

}
}This is an interesting thought for a "transportable" power amplifier but
}with simple design techniques and good grounding you can build, for about
}$20-$40 if you buy at surplus stores, a very sturdy power supply for audio
}purposes that will have plenty of reserve, a very small output impedance at
}audio frequencies, and as good a 60 Hz isolation as you will need (the
Hey, I'm surprised no one's mentioned the ultimate solution to the power
supply regulation problem:   3 phase power!  

Call your power company now!  What's a couple grand when we're talking hi-fi.
Just think; no capacitors at all!   Perfect regulation.
-- 

Norm   (strong@tc.fluke.com)