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- Newsgroups: rec.audio
- Path: sparky!uunet!ftpbox!mothost!schbbs!byrns-j@gamma.corp.mot.com
- From: byrns-j@gamma.corp.mot.com (John Byrns)
- Subject: Re: Sovtek tubes.
- Organization: Motorola
- Date: Thu, 17 Dec 1992 06:00:09 GMT
- Message-ID: <1992Dec17.060009.6087@schbbs.mot.com>
- References: <41483@unix.SRI.COM>
- Sender: news@schbbs.mot.com (Net News)
- Nntp-Posting-Host: 137.23.47.169
- Lines: 17
-
- In article <41483@unix.SRI.COM>, henry@monod.biol.mcgill.ca (Henry A. Pasternack) writes:
- >
- > I am still soliciting opinions on whether the problem of filter
- > resonance is troublesome when using LC power supply filters. Bear
- > in mind that although the resonant frequency of the filter can be
- > made lower than the passband of the amplifier, it is nonetheless
- > quite possible for the *envelope* power to vary at sub-audible
- > frequencies (as when a bass drum roll is played).
- >
- > Any practical advice would be appreciated.
- >
- I too am wondering about this for a construction project I am working on. You
- might check with people in the broadcast industry. I have heard that this was
- indeed a problem with some AM Broadcast Transmitters, which prevented them
- from reaching 100% modulation on program material, but had no problem under
- sine wave test conditions.
-
-