Re: Early '80s Motorola Semiconductor Reference - anyone?

2021-08-07 Thread r.stricklin via cctalk
> On Aug 7, 2021, at 7:24 PM, Chuck Guzis via cctech > wrote: > > On 8/7/21 5:50 PM, r.stricklin via cctech wrote: >> Anyone have an early ‘80s Motorola semiconductor reference manual? I am >> attempting to repair a Boschert power supply from ~1983 that is full of >> Motorola parts marked as

Re: Early '80s Motorola Semiconductor Reference - anyone?

2021-08-07 Thread Chuck Guzis via cctalk
On 8/7/21 5:50 PM, r.stricklin via cctech wrote: > Anyone have an early ‘80s Motorola semiconductor reference manual? I am > attempting to repair a Boschert power supply from ~1983 that is full of > Motorola parts marked as 1027 (DO-42ish), 1077 (TO-3ish), 1078 (DO-5ish), > etc. It would be extr

Early '80s Motorola Semiconductor Reference - anyone?

2021-08-07 Thread r.stricklin via cctalk
Anyone have an early ‘80s Motorola semiconductor reference manual? I am attempting to repair a Boschert power supply from ~1983 that is full of Motorola parts marked as 1027 (DO-42ish), 1077 (TO-3ish), 1078 (DO-5ish), etc. It would be extremely helpful to know their specifications, or ideally ho

Re: Early '80s Motorola Semiconductor Reference - anyone?

2021-08-07 Thread Al Kossow via cctalk
On 8/7/21 9:48 PM, r.stricklin via cctalk wrote: But I should trace the thing out anyway and try to draw my own schematic, first. if you do trace it out, I'd like to add it to bitsavers. there aren't many boschert schematics on the web

Re: Early '80s Motorola Semiconductor Reference - anyone?

2021-08-07 Thread r.stricklin via cctalk
> On Aug 7, 2021, at 9:17 PM, Chuck Guzis wrote: > > On 8/7/21 8:20 PM, r.stricklin wrote: > >> Ugh… I hadn’t even thought of that. You’re confident of it? > Until someone comes up with a better theory, yes. Consider this supply: > > http://bitsavers.org/pdf/boschert/Boschert_OL25_Single-Sta

Re: Early '80s Motorola Semiconductor Reference - anyone?

2021-08-07 Thread Chuck Guzis via cctalk
On 8/7/21 8:20 PM, r.stricklin wrote: > > Ugh… I hadn’t even thought of that. You’re confident of it? > Until someone comes up with a better theory, yes. Consider this supply: http://bitsavers.org/pdf/boschert/Boschert_OL25_Single-Stage_Power_Supply_Maintenance_Manual_May79.pdf Go to the BOM

Lecture: The Whirlwind I, 2021-08-14, 19:00

2021-08-07 Thread Anke Stüber via cctalk
Hi all, you're invited to the Update computer club[0] public lecture series "Updateringar"[1]! When: 2021-08-14, 19:00 CEST Where: https://bbb.cryptoparty.se/b/upd-0mo-m2u-aq8 The Whirlwind I The Whirlwind was a computer of the first generation built at the servomechanisms lab at MIT. It was th

VT101 free to good home, pick up in w. Oregon

2021-08-07 Thread invi via cctalk
It was sitting in the trash. No keyboard, no power cord. Case was open and some of the bundles of wires inside are disconnected, so I doubt it's in working condition. I'm not much of a hardware collector, so I was hoping to put it in the hands of someone who would like it.

Re: Help reading a 9 track tape

2021-08-07 Thread Jay Jaeger via cctalk
On 8/6/2021 12:21 PM, John Foust via cctalk wrote: At 11:45 AM 8/6/2021, Jay Jaeger via cctalk wrote: On 8/5/2021 2:57 PM, Len Shustek via cctalk wrote: On Aug 5, 2021, at 8:39 AM, Jay Jaeger via cctech wrote: I know Paul well (we were contemporaries at U. WI). Where did Paul work at UW-Madi