On 08/23/2015 02:29 AM, jwsmobile wrote:
There was an outfit here in Orange County, Ca that was a den of
oddballs who actually like to write compilers and were good at that
was called CSPI. In the 78-79 timeframe, Microdata bought a compiler
for Cobol and Fortran from them with a really big
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Brent
Hilpert
Sent: Sunday, August 23, 2015 3:07 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: RS-232 Tx / Rx monitoring LEDs?
On 2015-Aug-22, at 11:55 PM, drlegendre . wrote:
On
On 2015-Aug-23, at 9:06 AM, Chuck Guzis wrote:
On 08/23/2015 07:10 AM, dwight wrote:
I've used the capacitor method to provide most of the drop in the
past. I don't usually max out the LEDs at 20ma. I find there is
little difference between 10 and 20ma. Yes, the 10 ( or 20ma ) is
current flow
Those ubiquitous motion detectors for outdoor lights use capacitive dropping
to supply the
low voltage for the ICs and electronics. Cap and small R in series with the
AC input to a bridge rectifier.
Works out well in that the bridge rectifier permits current flow in both
directions,
On 2015-Aug-23, at 9:54 AM, Steve Moulding wrote:
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Brent
Hilpert
Sent: Sunday, August 23, 2015 3:07 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: RS-232 Tx / Rx monitoring LEDs?
Heh, all you had to say was power factor and I've have understood. I
suspected that was the case, but it seemed too easy..
Guess I'm too used to thinking in simple ohmic terms, with Watt Kirchhoff
always looming large. Something told me that, in the end, there was no way
around dealing with the
On 08/22/2015 11:55 PM, drlegendre . wrote:
I've also seen C-R series voltage dropping circuits, here there.
Correct me if I'm wrong, but doesn't the series cap dissipate power
just as it would, were it a series resistor? I mean, if the LED is
passing 20mA, the cap is also doing 20mA - and at
On 08/23/2015 07:10 AM, dwight wrote:
I've used the capacitor method to provide most of the drop in the
past. I don't usually max out the LEDs at 20ma. I find there is
little difference between 10 and 20ma. Yes, the 10 ( or 20ma ) is
current flow through the capacitor. It is necessary to have
...
[1] In the UK we call all CRT elecrodes after the control grid (first grid)
'anodes' which
makes sense as they are run +ve wrt the cathode.
So does a UK tetrode have one grid and two anodes? Or is there one
terminology for
CRTs and a different one for other tubes?
The
There was an outfit here in Orange County, Ca that was a den of oddballs
who actually like to write compilers and were good at that was called
CSPI. In the 78-79 timeframe, Microdata bought a compiler for Cobol and
Fortran from them with a really big check and helped them along the path
of
I've also seen C-R series voltage dropping circuits, here there.
Correct me if I'm wrong, but doesn't the series cap dissipate power just as
it would, were it a series resistor? I mean, if the LED is passing 20mA,
the cap is also doing 20mA - and at whatever the Vdrop is.
Right? If
On 2015-Aug-22, at 11:55 PM, drlegendre . wrote:
On Sun, Aug 23, 2015 at 1:17 AM, Chuck Guzis ccl...@sydex.com wrote:
On 08/22/2015 10:23 PM, dwight wrote:
I would think the reverse voltage sum of the diodes is enough.
Different diodes also can handle different voltages. Since the sum
of
On Sun, Aug 23, 2015 at 3:50 AM, Jay West jw...@classiccmp.org wrote:
Glen wrote...
-
Is that the one you rescued from somewhere in LA? Was wondering if you were
able to successfully manage that.
-
Nope. That was an 800 series KSR. I still want that, but the business trip I
was
On 8/22/2015 2:41 PM, Jay Jaeger wrote:
Unfortunately, bearings did not help the floppy drive, so now I am busy
taking the floppy power supply I got with my FD 100-8, making sure it is
up to spec to use with the Shugart (and correcting that if needs be),
and making it safer (mains fuse,
On 08/22/2015 10:23 PM, dwight wrote:
I would think the reverse voltage sum of the diodes is enough.
Different diodes also can handle different voltages. Since the sum
of the forward voltages is enough to handle AC, I'd suspect the
reverse voltages each would handle is quite small as well.
The
Anyone out there have:
1) The Schematic for the newer SA-800/SA-701 board part number 25229.1 ?
(It might also go by 25228 or 27121). The SA-800 maintenance manual on
bitsavers from Feb 78 describes the original discrete board (such as I
have on my Altos in the SA-800s) and an LSI-based board
Anyone who's passing through, or lives near Indianapolis, feel free to
give me a shout to set up a time to peruse what I have. I have amassed
enough machines to take on their own gravitational pull. Most are in
various states of disrepair, in need of attention, but quite a few still
work or
On Aug 23, 2015, at 13:52, Maxx Wood max...@gmail.com wrote:
Amiga 2000HD (boots, but I don't have a keyboard or mouse, and the floppy
drives continuously seek)
If you're referring to a 1-track click each second, then that's normal for an
Amiga. It's part of the disk change detection
Would you willing to ship the A500 up to Michigan? I'd give you a few bucks
for it as a spare unit for the one I've got.
Best,
Sean
On Sun, Aug 23, 2015 at 4:52 PM, Maxx Wood max...@gmail.com wrote:
Anyone who's passing through, or lives near Indianapolis, feel free to
give me a shout to
@#%!^
Why is all this posted a full year after I leave Indianapolis and move
to Belgium!? :D
LOLOL
I will ask my local contacts.
On Sun, Aug 23, 2015 at 10:52 PM, Maxx Wood max...@gmail.com wrote:
Anyone who's passing through, or lives near Indianapolis, feel free to give
me a shout to set
I can believe that the effect is only temporary--the action simply
cannot go any deeper than a few microns. All of which goes to show
that if you want a more permanent color, there's always paint. I have
equipment that's made from high-density polyurethane foam (no special
dies or forms
A! Neat to know - that's exactly what it's doing. :)
On 08/23/2015 06:32 PM, Mark J. Blair wrote:
On Aug 23, 2015, at 13:52, Maxx Wood max...@gmail.com wrote:
Amiga 2000HD (boots, but I don't have a keyboard or mouse, and the floppy
drives continuously seek)
If you're referring to a
On 8/23/2015 1:52 PM, Maxx Wood wrote:
Compaq Portables (luggable and plasma)
I'm interested in Portable III's and floppy media for them. Let me know
what you might have working and otherwise.
thanks
Jim
Hi all,
I have a PDP-11/55 for sale (Ottawa, Ontario, Canada). Bids open
until 2015 09 15, buyer to arrange shipping, I will have it wrapped
and ready to go.
Please visit:
www.krten.com/~rk/museum/index.html
For pictures, detailed inventory and contact info. Sealed bids via
eamil
Hi all,
I have a PDP-11/55 for sale (Ottawa, Ontario, Canada). Bids open
until 2015 09 15, buyer to arrange shipping, I will have it wrapped
and ready to go.
Please visit:
www.krten.com/~rk/museum/index.html
For pictures, detailed inventory and contact info. Sealed bids via
eamil
On 08/23/2015 09:53 PM, Ali wrote:
I can tell you from personal experience that repainting does not work
well. One, matching the color is nearly impossible. You can get
pretty darn close but not exact. Two, the paint quality is never as
good. Three, the feel is different - this one is hard to
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