🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: sci.electronics
Article #17796

Re: "Magic Eye" tubes (& other ancient technology)

#17796
From: Larry Lippman
Date: Thu, 16 Jul 1987 13:09
21 lines
1932 bytes
In article <584@sol.ARPA>, ken@rochester.arpa (Ken Yap) writes:
> This variety may not have existed in this country but there was another
> kind which varied a fluorescent strip. At maximum grid voltage the two
> strips closed, like a curtain. Same principle.  Good fun. Imagine: I
> wanted to make a bike speedometer with those things years ago. With a
> voltage inverter and all. I was a bit crazy then. No jokes about my
> still being crazy, thanks. :-)

	In keeping the magic eye tube technology, you should have used a
"vibrator" (the _electronic_ kind :-) ) as the inverter element.  Even
better, you should have used a synchronous vibrator which also functioned
as a rectifier - it had auxiliary pole-changing contacts.
	Does anyone remember the pleasant, "state-of-the-art" hum which
emanated from portable equipment which used vibrators?  I seem to recall
that most vibrators operated around 115 Hz.
	Hmmm... Have I just severely dated myself talking about vibrators?

<>  Larry Lippman @ Recognition Research Corp., Clarence, New York
<>  UUCP:  {allegra|ames|boulder|decvax|rocksanne|watmath}!sunybcs!kitty!larry
<>  VOICE: 716/688-1231        {hplabs|ihnp4|mtune|seismo|utzoo}!/
<>  FAX:   716/741-9635 {G1,G2,G3 modes}    "Have you hugged your cat today?" 
Technical Details
Message-ID: <1847@kitty.UUCP>
Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!seismo!rutgers!sunybcs!kitty!larry
References: <1495@frog.UUCP> <35ffa63b.b8ab@apollo.uucp> <6@spar.SPAR.SLB.COM> <584@sol.ARPA>

Show Full Headers
Complete Article Headers
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!seismo!rutgers!sunybcs!kitty!larry
From: larry@kitty.UUCP (Larry Lippman)
Newsgroups: sci.electronics,talk.bizarre
Subject: Re: "Magic Eye" tubes (& other ancient technology)
Message-ID: <1847@kitty.UUCP>
Date: Thu, 16-Jul-87 09:09:07 EDT
Article-I.D.: kitty.1847
Posted: Thu Jul 16 09:09:07 1987
Date-Received: Sat, 18-Jul-87 06:39:55 EDT
References: <1495@frog.UUCP> <35ffa63b.b8ab@apollo.uucp> <6@spar.SPAR.SLB.COM> <584@sol.ARPA>
Organization: Recognition Research Corp., Clarence, NY
Lines: 21
Summary: Use "vibrator" as inverter element...