Subject:
|
Re: Electronic brick (1968) schematics?
|
Newsgroups:
|
lugnet.trains
|
Date:
|
Mon, 23 Jul 2007 19:59:50 GMT
|
Viewed:
|
7068 times
|
| |
|
|
In lugnet.trains, Stefan Gustavson wrote:
> Has anyone ever tried to figure out its schematics?
Hi Stefan,
as far as I know a German fellow has done so. His nick at 1000steine is "Rat"
and he his the one, who has produced Aluminium rims for the 392 wheels.
You may try to contact him via this contact form (click on envelope)
http://www.1000steine.de/forum2/user.php?id=317
> From the pictures
> of the electronic block, I can see that the circuit board is pretty
> clearly visible through the plastic casing, and even though the view
> is obstructed by studs, it should be possible to peek between them and
> make out all the components and their connections by looking through
> the plastic from several angles, without opening the brick (which I
> assume is glued together). There doesn't seem to be a whole lot of
> components in there, and it's 1960's technology with only discrete
> transistors, so the task is at least manageable.
But you do not see how the components are connected, because this takes place
between black bottom and the plate on which the components are mounted.
You have to break a defected element to find out.
> Does anyone have a schematic, or a set of close-up photos[...]?
just uploaded content from my former homepage
http://www.brickshelf.com/gallery/Ben/historical/sets118and138/01_118vs138units.jpg
after moderation:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=267093
and some more pieces of info:
http://www.brickshelf.com/gallery/Ben/historical/trainmotors/99_train_motor_history.pdf
> I could simply design a circuit from scratch, but it wouldn't be
> the same. I would very much like to copy the actual historic design,
> or at least borrow some contemporary design principles from it.
Sorry, but for me this sounds like copying a 118 instruction on a 1968 Xerox
machine. You still have not more than a copy. And it's even worse than it could
be, if you would use today's equipment.... But of course this is just my
personal impression.
> Note that I would like to recreate the 139 with its "forward-stop-
> reverse-stop" logic, not the 138 ("go-stop") which would be pretty
> simple in comparison. I expect a lot fewer components were required
> for that first product.
No really: 139 contined a IC and in total less components.
> And last but not least, could someone record the sound of the whistle
> and post it somewhere or e-mail it to me, or just tell me what pitch it
> has (e.g by using a guitar tuner or similar), so that my re-make of
> the circuit can be compatible with the real thing? A suitable e-mail
> address for sending me a sound sample is "stefan.gustavson@gmail.com".
I have no recording equipment at hand and only the 118 whistle left. I sold most
of my classic collection to focus on MOCs.
Leg Godt!
Ben
|
|
Message has 1 Reply:
 | | Re: Electronic brick (1968) schematics?
|
| Ben, I was very happy to see your post when I checked today, after six months of being swamped with work and having too little time for this hobby. Thanks a lot for your high quality information! I can calm your purist sense by saying that my (...) (17 years ago, 21-Jan-08, to lugnet.trains)
|
Message is in Reply To:
| | Electronic brick (1968) schematics?
|
| Several people here on Lugnet own copies of 139 (the 4.5V Electronic train control unit), and even though I am not quite eager enough to try to acquire a copy for myself, I'm still very much interested in this set, as it was a childhood dream of (...) (17 years ago, 19-Jul-07, to lugnet.trains)
|
9 Messages in This Thread:
  
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
