söndag 24 december 2017 skrev Chuck Guzis via cctalk :
> On 12/23/2017 07:24 PM, Chris Elmquist wrote:
>
> > I’m not sure you can smell the difference between failed selenium
> rectifiers and lutefisk...
>
> It probably doesn't get interesting until you toss in a can of
> surströmming...
>
> --Chu
> From: Mattis Lind
> Unfortunately I am not having any lutfisk this year. The rest of the
> family is not very fond of it.
I"m glad to see there are _some_ non-crazy people there! :-)
Anway, I can way top that - the tradition Bermudian Christmas dish is cassava
pie: make that wrong
Hi, I'm brand new to vintage computing and would love any advice. I'm
thinking of putting together a SM EVM A131-10 and would appreciate any
advice/knowledge on the unit.
I am continuing work to reverse engineer the schematic for my H7826 PSU. I
have removed one of the daughter cards in order to draw its schematic, but I
can't identify some of the surface mount components on it. I have posted a
picture of it here:
https://rjarratt.files.wordpress.com/2017/12/50-1953
On 12/24/2017 10:27 AM, Rob Jarratt via cctalk wrote:
>
> 1. The component with two wide pins that looks like an IC
> approximately in the middle of the board. It is marked M106 (or it might be
> AA106) and 91813 underneath. I think it may be a resistor, but I am not
> sure.
>
> 2. J
> My guesses are as follows.
>
> 1. That "AA" or "M" looks to me like a Motorola logo. The fact that this
> device
> is polarized leads me to suspect that it's a diode.
>
> 2. I suspect that this thing is a fuse.
>
> 3. Almost certainly transistors. The center pin is usually the collector.
On 12/24/2017 11:15 AM, Rob Jarratt wrote:
> I think the orange components are capacitors (they are taller than the
> browner ones), but their markings don't seem to hint at the values, some are
> marked "AA4", which does not seem to correspond to any marking scheme I have
> been able to find.
On 2017-Dec-24, at 10:27 AM, Rob Jarratt via cctalk wrote:
> I am continuing work to reverse engineer the schematic for my H7826 PSU. I
> have removed one of the daughter cards in order to draw its schematic, but I
> can't identify some of the surface mount components on it. I have posted a
> pictu
On 2017-Dec-24, at 12:01 PM, Chuck Guzis via cctalk wrote:
> On 12/24/2017 11:15 AM, Rob Jarratt wrote:
>
>> I think the orange components are capacitors (they are taller than the
>> browner ones), but their markings don't seem to hint at the values, some are
>> marked "AA4", which does not seem
Maybe this got missed.
HP16C - PC software http://www.wrpn.emmet-gray.com/
Keven Miller
- Original Message -
From: "Curious Marc via cctech"
To: ;
Sent: Sat 23 Dec 2017 10:27 PM
Subject: Re: Argh--my old faithful HP16C is failing!
Thanks very much! I am going to install this one.
On Sun, Dec 24, 2017 at 10:58 AM, Greg Smith via cctalk <
cctalk@classiccmp.org> wrote:
> Hi, I'm brand new to vintage computing and would love any advice. I'm
> thinking of putting together a SM EVM A131-10 and would appreciate any
> advice/knowledge on the unit.
>
Learn to read Russian? That
> >
> > My guess is capacitors also.
>
>
> Noting they are paralleling resistors, they're probably just noise/AC
bypass, on
> the order of 0.01 uF, and not overly consequential to understanding the
basic
> circuit.
>
> Again, one can draw it out with the above presumption and then assess
> wheth
If you could wait, getting one of those ‘unknown component testers’ would help
you!
David Collins
> On 25 Dec 2017, at 5:27 am, Rob Jarratt via cctalk
> wrote:
>
> I am continuing work to reverse engineer the schematic for my H7826 PSU. I
> have removed one of the daughter cards in order to d
> -Original Message-
> From: David Collins [mailto:davidkcolli...@gmail.com]
> Sent: 24 December 2017 22:07
> To: r...@jarratt.me.uk; Rob Jarratt ; General
> Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Help Identifying Components
>
> If you could wait, getting one of those ‘
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