Driver to drive?

[Martin Riddle]

On Tue, 22 May 2018 12:20:17 -0700, Jeff Liebermann <jeffl@cruzio.com>
wrote:

On Tue, 22 May 2018 11:12:01 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

Weird. The referenced post showed up as new in Thunderbird today--I
just noticed the 2008 date. I hope the OP figured out the problem!
Cheers
Phil Hobbs

My guess(tm) is that your Thunderbirdie global messages database is
mangled. Easy fix:
https://support.mozilla.org/en-US/kb/rebuilding-global-database
For a while last year, Thunderbirdie was delivering indexing failures,
searches returning blank messages, and tangled threading. Rebuilding
global-messages-db.sqlite fixes the problem.

You may also want to rebuild some of the associated MSF message
indexes:
https://www.lifewire.com/repair-folders-thunderbird-1173102
I'm not sure if this part is really necessary, but it doesn't hurt to
rebuild everything.

You can watch the action by monitoring:
Tools -> Activity Monitor

From time to time my Agent mangles threads too. I always check the
dates.

Cheers

 

[Jim Thompson]

On Thu, 24 May 2018 09:13:03 -0700, Jeff Liebermann <jeffl@cruzio.com>
wrote:

On Wed, 23 May 2018 21:16:12 -0400, Martin Riddle
martin_ridd@verizon.net> wrote:

From time to time my Agent mangles threads too. I always check the
dates.

Yep. I'm currently using Agent 5.00/32.1171 mostly because later
versions seemed to make the problem worse. The usual symptom is a new
thread of articles magically appear grafted into the middle of an old
thread, usually many years old. Rebuilding the indexes doesn't fix
the threading. At one time, I thought that some news readers were
generating duplicate ID numbers, but upon checking, that was not the
case. It only happens to me about 4 times per year, so I just ignore
the problem. (I should probably try a later version).

I'm currently using Agent v7.20/32.1218 without issue.

Don't bother paying for any version later than that... "Support" still
hasn't fixed the "expire after 10-days of inactivity" problem with
filters when Win7 and Win10 munged them.

I get the feeling Forté just doesn't give a damn anymore... just milk
suckers for more and more useless "features" :-(

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

Thinking outside the box... producing elegant solutions,
by understanding what nature is hiding.

"It is not in doing what you like, but in liking what you do that
is the secret of happiness." -James Barrie

 

[Jeff Liebermann]

On Wed, 23 May 2018 21:16:12 -0400, Martin Riddle
<martin_ridd@verizon.net> wrote:

From time to time my Agent mangles threads too. I always check the
dates.

Yep. I'm currently using Agent 5.00/32.1171 mostly because later
versions seemed to make the problem worse. The usual symptom is a new
thread of articles magically appear grafted into the middle of an old
thread, usually many years old. Rebuilding the indexes doesn't fix
the threading. At one time, I thought that some news readers were
generating duplicate ID numbers, but upon checking, that was not the
case. It only happens to me about 4 times per year, so I just ignore
the problem. (I should probably try a later version).



--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

 

[Badbob]

On 1/30/2018 2:56 PM, oldschool@tubes.com wrote:

SFE 0.5 amp / 250V

Consider Amazon. I used them to find a rare car fuse not found locally.
Because they have everything I always find stuff to make up an order
for free shipping.

Bob

 

[Don]

responding to
http://www.electrondepot.com/electrodesign/fincor-pid-dancer-schematic-or-manual-needed-872797-.htm
, Don wrote:

Ken wrote:

responding to

http://www.electrondepot.com/electrodesign/fincor-pid-dancer-schematic-or-manual-needed-872797-.htm
, Ken wrote:
jamie_ka1lpa wrote:



I know many of your old farts here have a collection of schematics
or at

least manuals....

I can not find the manual or maybe even the schematic that
sometimes
comes with these manuals for a :

Fincor 105456401 , 1900-77


This is a PID dancer controller with a tach following option.

If need be I can reverse engineer one using TinyCad or some
common
free electronic CAD program so I can study it to get a better
understanding of the option dip switches and pots on it that don't
seem

to have much obvious use.

Jamie

Do you still need the manual? I have a copy.

Ken

Jamie,

I am also interested in the 1900-77, can I get a copy of the info? Thanks

 

[M Philbrook]

In article <2uYRC.350497$Xa4.172505@fx29.am4>,
f6ceedb9c75b52f7fcc0a55cf0cfbf5d_1104@example.com says...

responding to
http://www.electrondepot.com/electrodesign/fincor-pid-dancer-schematic-or-manual-needed-872797-.htm
, Don wrote:
Ken wrote:

responding to

http://www.electrondepot.com/electrodesign/fincor-pid-dancer-schematic-or-manual-needed-872797-.htm
, Ken wrote:
jamie_ka1lpa wrote:



I know many of your old farts here have a collection of schematics
or at

least manuals....

I can not find the manual or maybe even the schematic that
sometimes
comes with these manuals for a :

Fincor 105456401 , 1900-77


This is a PID dancer controller with a tach following option.

If need be I can reverse engineer one using TinyCad or some
common
free electronic CAD program so I can study it to get a better
understanding of the option dip switches and pots on it that don't
seem

to have much obvious use.

Jamie

Do you still need the manual? I have a copy.

Ken


Jamie,

I am also interested in the 1900-77, can I get a copy of the info? Thanks

I reversed engineered most of it using TinyCad, If you are still
interested I'll dig it up.

 

[Albert van der Horst]

In article <6spk5dpgr5r9g0ohv3cdlmk34u9n9qhcfl@4ax.com>,
Neon John <no@never.com> wrote:

On Sat, 13 Jan 2018 09:48:18 -0800, John Larkin
jjlarkin@highlandtechnology.com> wrote:


If all of Mexico moved here and we moved there, the U.S. would soon be the
new Mexico, and illegal immigrants would be crossing the Rio Grande going
south instead of north.

So true.


An increasing fraction of hispanic US citizens want The Wall.

I don't want the wall because a) it is far too expensive and b) like
the Maganot Wall, is a fixed barrier which can be breached, gone
around, over and under.

What I want is an intelligent meshed network of smart land mines along
with periodic deep buried explosives designed to collapse tunnels.
This would cost a fraction of the cost of the wall and would be vastly
more effective. Also perhaps some intelligent machine guns along the
US edge of the mine field. This is for those who may somehow figure
out how to defeat the mines.

I have a friend who has built a robot rifle using nothing more than RC
parts and a smart phone. It uses image recognition to track the
designated target. Press a button on the RC controller and the rifle
fires. He's working now to adapt it to a large drone. An outstanding
use of technology.

We've been working together for a few weeks writing an SBIR proposal
that incorporates these ideas. When it's finished it will be
delivered to Homeland Security with copies to the White House and our
elected officials. I'm crossing my fingers that President Trump isn't
to proud to admit that this is a better idea than the wall.

I knew the US would Trump the Berlin wall!

John

Groetjes Albert
--
Albert van der Horst, UTRECHT,THE NETHERLANDS
Economic growth -- being exponential -- ultimately falters.
albert@spe&ar&c.xs4all.nl &=n http://home.hccnet.nl/a.w.m.van.der.horst

 

On Friday, January 12, 2018 at 4:52:15 PM UTC-5, Cursitor Doom wrote:

On Fri, 12 Jan 2018 12:50:42 -0700, Jim Thompson wrote:

Anyone?

Anyone here think we SHOULD allow immigration from SHITHOLE countries?

Please explain WHY.

Perhaps we should ship YOU to said SHITHOLE country for re-education?

I can't understand what the fuss is all about. Anyone who thinks those
countries *aren't* shit holes is living in cloud-cuckoo land. Perhaps if
he'd have said they were basket-case countries it wouldn't have caused
such a flap. But whatever you call them, they *are* undoubtedly shit-
holes for sure (but "hell holes" would be less offensive I guess).

I'm sorry, I was out of the room for a moment. *Which* countries are the "shit-hole" countries again?

Rick C.

 

[Cursitor Doom]

On Tue, 12 Jun 2018 18:12:08 -0700, gnuarm.deletethisbit wrote:

I'm sorry, I was out of the room for a moment. *Which* countries are
the "shit-hole" countries again?

Rick C.

Whichever one you're posting from, most likely.




--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.

 

[Lasse Langwadt Christense]

søndag den 19. august 2018 kl. 17.17.53 UTC+2 skrev Cursitor Doom:

Gentlemen,

One of the drawbacks of attempting to fix vintage stuff is the expected
voltage readings given in the service manuals of the day. The manuals
usually state that the readings given were measured with analogue VMs of
a certain ohms-per-volt rating - most commonly IME 20k. Consequently if
you measure with a modern DVM with stupendously high Zin you're screwed
and will get unrealistically high values. That's never worried me as I
keep a vintage AVO for just such circs. All the British service manuals
seem to reference 20k OpV AVOs. However, I'm currently TS on a mid 70s Tek
scope the manual for which states the readings given are valid for a
meter with a Zin of between 100k and 200k (specifically a Triplett 630NS
see link).

Anyone come up with a solution to the problem of making voltage readings
on high impedance parts of a circuit with a meter of a different Zin to
that used by the people who wrote the service manual?

Never heard of an analogue meter with such a high Zin, but here it is:

https://tinyurl.com/ycjz9l4o

add a resistor to the meter and be done with it?

 

[Tom Gardner]

On 19/08/18 16:45, Cursitor Doom wrote:

On Sun, 19 Aug 2018 08:41:28 -0700, Lasse Langwadt Christensen wrote:

add a resistor to the meter and be done with it?

Not that simple, though AFAIK. You can't add a fixed resistance in series
with the probe because you will be measuring voltages with all sorts of
different source impedances.

Good grief. You need a /parallel/ resistor.

Traditionally at FSD there is 50uA through the meter,
so that defines the resistor value.

 

>"20k per volt doesn't really mean exactly that. It means 20k on the 1V range, 200k on the 10V range etc. "

I thought that went without saying. Ugh, what was I thinking ? Nothing goes without saying these days. I mean we are getting to the point where Mapquest instructions start with "Wake up, get dressed, find your car keys...".

And thank you for spelling "etc." correctly. An abbreviation for "et cetera", for some reason people think it is "ect" and they don't even bother with the period. Actually many people use it when "et alia" or "et alii" would be more appropriate, both abbreviable to "et al.". Not exactly sure right now but I think "alia" and "alii" mean others and more while "cetera" means and so forth or and so on.

Something like that.

(hey, BS like that is what Sundays is for)

 

[Clive Arthur]

On 19/08/2018 16:45, Cursitor Doom wrote:

On Sun, 19 Aug 2018 08:41:28 -0700, Lasse Langwadt Christensen wrote:

add a resistor to the meter and be done with it?

Not that simple, though AFAIK. You can't add a fixed resistance in series
with the probe because you will be measuring voltages with all sorts of
different source impedances.

20k per volt doesn't really mean exactly that. It means 20k on the 1V
range, 200k on the 10V range etc. So a parallel resistor appropriate to
the meter range is all you need.

Cheers
--
Clive

 

"You can't add a fixed resistance in series
with the probe "

DOH ! ! !

No, across the leads, in parallel. A resistor that will LOAD the circuit like an old VOM would,

Or you could use knowledge to compensate, look at the print and see what the source resistance is and just figure out how much loading would take off of the voltage.

 

[Cursitor Doom]

On Sun, 19 Aug 2018 08:41:28 -0700, Lasse Langwadt Christensen wrote:

> add a resistor to the meter and be done with it?

Not that simple, though AFAIK. You can't add a fixed resistance in series
with the probe because you will be measuring voltages with all sorts of
different source impedances.





--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.

 

[Clive Arthur]

On 19/08/2018 17:23, jurb6006@gmail.com wrote:

"20k per volt doesn't really mean exactly that. It means 20k on the 1V range, 200k on the 10V range etc."

I thought that went without saying. Ugh, what was I thinking ? Nothing goes without saying these days. I mean we are getting to the point where Mapquest instructions start with "Wake up, get dressed, find your car keys...".

And thank you for spelling "etc." correctly. An abbreviation for "et cetera", for some reason people think it is "ect" and they don't even bother with the period. Actually many people use it when "et alia" or "et alii" would be more appropriate, both abbreviable to "et al.". Not exactly sure right now but I think "alia" and "alii" mean others and more while "cetera" means and so forth or and so on.

Something like that.

(hey, BS like that is what Sundays is for)

'Cetera' (KAY-ter-ah) means 'the rest', so 'and the rest'. ('O' level
Latin circa 1970)

Cheers
--
Clive

 

"'Cetera' (KAY-ter-ah) means 'the rest', so 'and the rest'. ('O' level
Latin circa 1970)"

Well we pronounce it "Set-er-a" around here. "The rest" sounds right, closer than what I said. It has been a while since I have paid attention to things like that. I would just be less unhappy if they wouldn't use "ect.".

 

"On Sun, 19 Aug 2018 09:24:57 -0700, John Larkin wrote:

Why not ignore the voltage notes and just fix it?

You're obviously not a service engineer. ;-) "

Well I think I can pretty assuredly claim that title and I can compensate for bad readings. In fact there are quite a few circuits that I can just guess what the voltage, or even waveform should look like.

Know why I don't use my transistor checker ? Because from the waveforms on the base, emitter and collector I can tell if it is bad.

A tube amp, the plates are going to be about the DC of the output from the rectifier, the G2s a bit lower with some exceptions like a Williamson circuit or being used as triodes. The G1s will be negative or the cathodes will be positive. A phase splitter you want the cathode at about 1/3 of the B+ and the plate at 2/3, the grid voltage will be somewhat lower. For common stages the cathode will usually be +DC within reason, and if it is intended to use the full output range the plate will be at about 1/2 B+. that is not always true, sometimes the engineer will put it off center into the point of the curve where it is the most linear. Still it needs headroom both ways.

Tube tester ? If the stage has a cathode resistor and there is positive voltage on it the tube is conducting. The plate voltage will not be affected much by the DC bias current and even a 100:1 scope probe will throw the tuning off some.

Most tube circuitry is so simple I can damn near feel it. My problem now is following point to point. I used to not like circuit boards but after the years I have found them easier to follow. I am spoiled in that regard.

Back when you had to BUY prints for this stuff I was famous for not needing them. Some really complicated issues I actually sat there and drew the schematic of the circuit by reverse engineering.

And I have noticed mistakes on the voltages given. One line, which is a wire, 12 volts on one side and ground on the other. Something does not compute..

The main thing I have needed the specified waveforms for were the SMPS, if any. I know my Tek is off a bit and I wish I had a clearer picture of the waveform on the choppers. It is too old for an SMPS but is an AC/DC model.

My point ? Figure out what those voltages should be on your own.

 

>"This is an electronic design group. "

Yes, whuich means it is your fault that all this shit is breaking down.

"I think there is an electronic
repair group."

It is much more fun here talking about Trump and Putin and the tanked economy. (oops, that didn't happen)

>"The engineering approach to fixing things is to probe
around, understand how it's supposed to work, and figure out why it
doesn't. "

That's the way I always did it.

You know back when I wasn't quite as developed I used to say "I think the people who design this shit should be made to fix it". I still don't believe that is such a bad idea but I now know that it is not practical. Still, it would be nice.

Back in the day, I advocated testing for applicants to the service field. I took one at Electrasound and rewrote it. I wrote a couple of them, one in Qbasic, which became worthless with XP, or was it 98 ? I didn't feel like leaning C, oh well. I also thought that IF, looking for a better tech., right before the interview give them a paper and pencil, several pieces of paper in fact in case the make a mistake, give them some time and make them draw a detailed block diagram of a COLOR TV. Back then I mean NTSC. The diagram is rejected if it is too basic, like a "black box", but more detailed drawings get a better score. This along with basic electronics proficiency you might have an effective screen against the incompetent.

With today's TVs I might not be able to pass such a test, let alone write one.

But now I am having trouble writing my CV. I have had so many diversified jobs, and done many notable tings I would like to include that I would give my left nut to get it on to one page. It's about 4 and that is as condensed as I could make it at the time. Need to squish it down.

But just voltages ? there are simple rules, and error factors are not that important in tube stuff because most of it is unregulated, and line voltage changes, and it has upped since those things were built so they are getting 125 volts instead of 110. Take whatever factor that is and square it and you got the added power dissipation, like double.

I have found this easy to figure out. It might be because I am not conventionally educated. I found that I was unaware of many limitations I do not have.

But really, the point of all this is that it is not all that heard to just figure out what voltages should be.

 

[Clive Arthur]

On 19/08/2018 19:39, jurb6006@gmail.com wrote:

"'Cetera' (KAY-ter-ah) means 'the rest', so 'and the rest'. ('O' level
Latin circa 1970)"

Well we pronounce it "Set-er-a" around here. "The rest" sounds right, closer than what I said. It has been a while since I have paid attention to things like that. I would just be less unhappy if they wouldn't use "ect.".

Yes, sorry, that was the Latin pronunciation as taught, in English it's
as you wrote.

Cheers
--
Clive