test-drb February 2004

test-drb@ccmp.vtda.org

275 participants
504 discussions

OT: Need P/S specs for Power Sentry USB hub (was OT: Need HP

by arois＠ciudad.com.ar

Hi. i don't know if you have it already. I have one,. it is definetely 5V, however, I dont know if the (+) is inside or outside. If you know, please let me know since i need to plug it in too...

20 years, 10 months

TCA240 pinout and a little data

by ard＠p850ug1.demon.co.uk

Jules Richardson (IIRC) was asking about this chip to repair a classic computer peripheral (so it is on-topic)... I can't find it in a databook, but I've found a circuit that uses it -- the 'Head Amplifier Playback' module (board P50) in a Philips VR2020 VCR [1].It seems to contain 8 NPN transistors and nothing else (at least the schematic of that board shows the internals of the IC as 8 transistors only) and consists of 2 identical sections. Each is a long-tailed pair with a couple more transistors acting as a current sink for the 'tail'. Anyway, here's a pinout. There may be substrate connections, etc that I don't know about, and which might matter if you want to design something round the IC. But this should be enough to understand the circuit the chip is used in. I assume the chip Jules is looking at is a 16 pin DIL package. I'll draw the schematic of half the chip, giving the pin numbers for one section, with the corresponding pins for the other section in parentheses... 14 (11) 12 (13) o o | | | | / \ |/ \| 3 (6) o-----| |-----o 4 (5) |\> </| \ / | | +-----+-----+ | | / |/ 2 (7) o-----| |\> \ | +----------o 1 (8) | / |/ 15 (10) o-------| |\> \ | | o 16 (9) -tony

20 years, 10 months

Greedy E-bay idiots!

by rigdonj＠cfl.rr.com

Did you guys see this? <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2592518771&category=4504 5>. It's a thin manual for an EPROM programmer. This clown wants $9.80 for shipping AND $2.80 for insurance (REQUIRED no less). Actual postage for this via USPS bookrate is about 40 cents and insurance is 35 cents! How do these clowns expect to stay in business! Joe

20 years, 10 months

PerSci manual wanted (classiccomp)

by pete＠dunnington.u-net.com

Hi, Herb. On Feb 14, 14:31, Herb Johnson wrote: > Saw your msg below while searching the Web about Persci drives. > I have a 277 manual, courtesty of Cromemco, in my inventory. > I normally sell copies by the page but I would trade for copies > of some of your manuals. Confirm you are still interested and > we can work the details. I have the Persci 277, 299, (8-inch) > manuals; what is the 207 and 272? At the time, one of the places I looked was your site and I recall (I think) seeing your manual. I've since been given a PDF copy, though, so I don't need a "real" one. As to the models, as you probably know, the 277 and 299 are twin drives -- they take two disks -- the 277 being single-sided and the 299B being double-sided. I only have the full spec for the 277/299, so I'm not sure but I believe the 270/272 are single-mechanism versions (ie they take one disk, not two). -- Pete Peter Turnbull Network Manager University of York

20 years, 10 months

Aargh...It never ends..

by dwight.elvey＠amd.com

Hi Actually it won't make a particularly good Jacobs ladder. If it doesn't blow a breaker, the rods will most likely melt off. It is not like a neon sign transformer that is current limited, it is a transformer that is current rated. Let me see, 60Kv at 30ma is 1800W. How long so you think the rods will hold up to such power. I recommend having a fire extinguisher handy. >From: "ed sharpe" <esharpe(a)uswest.net> > >it should make a fine Jacobs ladder! >ed! >----- Original Message ----- >From: "ben franchuk" <bfranchuk(a)jetnet.ab.ca> >To: <General Discussion :>; "On-Topic and Off-Topic Posts" ><cctalk(a)classiccmp.org> >Sent: Friday, February 20, 2004 9:37 PM >Subject: Re: Aargh...It never ends.. > > >> Patrick Finnegan wrote: >> >> > Hmm. I've got the transformer off an X-Ray generator which puts out >> > 60kV at probably at least 30mA sitting in my office where I've been >> > playing with it a bit before bringing it home (and building a Bigger >> > Better jacobs ladder). I think it'd probably sting a bit to get in the >> > path of that... >> >> Build a demo fusor,that is lots of fun. >> ( And $$$ and time and parts ) >> http://www.fusor.net/ >> >> > It's quite funny, actually. When I tell people that I have it because >> > "it makes sparks," no one seems to understand. But when I show them >> > what it does, they're usually quite impressed and gain >> > understanding. :) >> >> Wait till you roll out the dead body and show them how you can bring it >> to life.:D >> >> > Pat >> Ben. >> >> >> >> >> > > >

20 years, 10 months

Jade JGZ80

by dwight.elvey＠amd.com

Hi Does anyone have a manual for this S-100 Jade JGZ80 board? I'm trying to figure how to set up the ROM addressing. Thanks Dwight

20 years, 10 months

lk401 keyboard protocol?

by msokolov＠ivan.Harhan.ORG

David V. Corbin <dvcorbin(a)optonline.net> wrote: > Everybody, remember Hollerith's 39th Birthday is later this week!!!!!!!! 39th? Shouldn't it be older than that? MS

20 years, 10 months

Anyone near Rancocas, NJ.....

by d_cymbal＠hotmail.com

...whose travels ever take them up near Boston? Somebody down there has offered me a bunch of Visual 1050 items that I'm interested in, but he is not willing to pack/ship the stuff and I can't get down there anytime soon. Alternatively, if someone is willing to try and handle the packing/shipping for me let me know what terms you'd consider. Thanks. dc _________________________________________________________________ Click, drag and drop. My MSN is the simple way to design your homepage. http://click.atdmt.com/AVE/go/onm00200364ave/direct/01/

20 years, 10 months

Sellam - TV star !

by brianmahoney＠look.ca

Just caught Sellam on Media Television here in Toronto. The show is produced by our independent station, CITY - TV. Is this old news? Anyway, my 14 year old son called me into the room and we both watched the fairly long (for TV) interview/tour. Besides being very interesting to me, I feel it gave my son some new-found pride in what I do as a hobby. Kind of gave it some legitamacy. If anyone wants more details, let me know. Brian M. (seen Sunday Feb. 22/04 at 12:15)

20 years, 10 months

FORTH Journals

by dwight.elvey＠amd.com

Hi I thought someone in this group might also be interested in these books. For those interested in Forth, the Forth Encyclopedia ( upper left ) is worth more than all the rest of the items he has. Of course, the Forth Primer is a historic item as well. Dwight >From: "Jimmy Pepp" <onanysunday(a)yahoo.com> > >Hi: > >My name is Charlie Krajewski. For several years I >subscribed to and saved Forth literature. I am >cleaning up and I'd like to find a good home for these >journals, etc. > >Most of what I have can be seen in this pic: > >http://www.skcpumps.com/images/forth.jpg > >The FORML proceedings are 1983, 1984, 1985 >5 Issues of "The Journal of Forth R&D" >1984 Forth Rochester Conference > >Everything is $5/Journal, Except for: >"Using Forth" $20 >"Inside F83", $10 > >All will be sold, first come, first serve. > >Make an offer. If I don't receive the asking price I >will sell for the best offer. > >You will be billed for the exact postage. Items will >be shipped Media Mail to minimize shipping charges. > >I may unearth more stuff later. > >Charlie Krajewski >112 Golfview Drive >McMurray, PA 15317 >724-941-5779 > > > > >__________________________________ >Do you Yahoo!? >Yahoo! Mail SpamGuard - Read only the mail you want. >http://antispam.yahoo.com/tools >

20 years, 10 months

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test-drb February 2004