Article View: comp.sys.mac
Article #6988Re: Appletalk signal drivers
From: Steve Ligett
Date: Tue, 24 Oct 1989 14:55
Date: Tue, 24 Oct 1989 14:55
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In article <829@bogart.WEITEK.COM> lupin@bogart.WEITEK.COM (Ed Lupin) writes: ... >Also, Inside Appletalk suggests that Appletalk may be driven unipolarly, >with +5V and 0V only. I have my doubts. Comments? If you're putting in filters like Apple has in the Macs, drive it with +/- 5 volts, otherwise you can just use +5. The filters throw away about half the signal. We're using 75176's as drivers, and there's a bunch of others to look at rather than the 26ls30. All of this is from memory - our stuff was designed in '84. -- Steve Ligett steve.ligett@dartmouth.edu or (decvax harvard linus true)!dartvax!steve.ligett
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!bu-cs!dartvax!eleazar.dartmouth.edu!stevel From: stevel@eleazar.dartmouth.edu (Steve Ligett) Newsgroups: comp.sys.mac Subject: Re: Appletalk signal drivers Message-ID: <16323@dartvax.Dartmouth.EDU> Date: 24 Oct 89 14:55:19 GMT References: <829@bogart.WEITEK.COM> Sender: news@dartvax.Dartmouth.EDU Reply-To: stevel@eleazar.dartmouth.edu (Steve Ligett) Organization: Dartmouth College, Hanover, NH Lines: 15