Subject: Re: Vaccum Tube
Date: Wed, 27 Nov 2002 00:54:41 +0800
Organization: The Chinese University of Hong Kong
NNTP-Posting-Date: Tue, 26 Nov 2002 16:54:43 +0000 (UTC)
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
"indago" wrote in message
> On 021125 1457, Bob Peterson wrote:
> > There used to be solid state substitutes for at least some commonly used
> > tubes. But I doubt if they are around anymore, as there just aren't
> > many commonly used vacuum tubes anymore.
> > You could certainly design your own substitute circuits, but I doubt its
> > worth it. I seem to recall running acrossa website somewhere that still
> > sold old vacuum tubes. A google search might be productive if you are
> > looking for a replacement tube to repair an old junker. best bet (in
> > cases) is to send it on to the junk yard and get something more modern.
> > "Tim Heise" wrote in message
> > news:d8vE9.205$Ic4.email@example.com...
> >> Since a tube is a voltage device and a transistor is a current device,
> >> entire circuit would have to be redesigned, or totally conceived anew
> >> scratch. A transistor replacement for a vacuum tube would be a
> >> device consisting of various components to match the transistor to the
> >> design and electical paramaters within the circuit. From an economic
> >> standpoint, such a conversion would not pay profitably.....
> >> Tim H....
> Certainly wouldn't want to throw out a vintage McIntosh stereo amplifier
> with the chrome plated chassis, or some other classic like that. Those
> as pleasant to see working as they were to listen to -- if you were into
> that sort of thing...
Thx for your advice, but my circuit is not for listening music. It's due to
that I have a old circuit which uses vacuum tube, and the circuit is quite
important for me.