Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: 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... Xref: mnetor sci.electronics:985 talk.bizarre:2522 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?"