One thing that is not often thought about (or known) is the need to verify the breaker screws and main lugs are torqued to the correct specification. Copper and aluminum will both deform over time and you can wind up with a higher resistance connection with the resulting heat and/or fire.

And especially on newer construction, make sure that any aluminum connections had anti oxidation gel applied.

Hal

So as recent experience shows, 18 - 26 amps max continuous load for
months was a tad optimistic for this unknown brand Schuko wall socket,
which subsequently proceeded to smolder, melt, and deform, almost
causing a fire. I guess you don't think about wall socket power
ratings when your central heating goes out. I've smelled the telltale
smell of something smoldering for a few days, but I couldn't quite
localize it. I checked the cable, and it was warm, but there are a few
warm cables in my house and they're fine, so I assumed this was fine.
I had to dig down to the actual plug and socket (conveniently located
under a few cardboard boxes by the way) in order to find the
following.



One thing that'll "get you" is that this has been running like that
for months now, and only this week has it started making funny smells.
It's good to know about things that'll "get you" like that.
Expectation would be that if it works at first, it'll just keep
working, because how can a plug in a socket go from perfectly fine to
bad enough after months of being used in equal manner? Turns out this
expectation was not correct.

I had to use (VDE) pliers to get the contacts out, and they made a
nice crunchy sound on their way out. Of course I shut off the breaker
first. The contacts are nice and oxidized from the heat, all the way
to blue and brown.

BTW, Schuko are rated to 16A only. Go figure.

Hi Folks, I got hands on a? Agilent 33250A recently. It works fine in Remote, but no
Display. I looking for a Display Section. Anyone on List got one for Sale ?
I am in Toronto, Canada. Please contact me Off List if you got something
suitable. Thanks
Regards - Bill Lauchlan

--

All,

Would anyone have or know where I could obtain card and assembly 08601-6046?

Thanks in advance.

Chris

About two decades ago I decided to move to another state.? The problem was that I had approximately 110,000 pounds (according to the truck drivers when they weighed in) of test equipment plus shop items, etc.?

?

My initial approach was to contact trucking contractors to obtain cost estimates.? But when talking with them a question was raised as to if these were personal items.? When the answer was “yes” they said that they couldn’t help me because the moving industry lobbied congress to pass a law that prohibited freight trucking companies from getting into the personal moving business.

?

So I contacted a few moving companies.? Estimates ranged in the $30,000 area for moving costs.? A no-go.? I went back to calling trucking companies with the same answers regarding inability to move personal items.? Then one company asked me what proportion of the load was personal.? I started to think that since there was a significant amount of equipment that was targeted towards a new company I was planning on starting I calculated that personal items were about 2% of the total load.? The? trucking company agreed to take the job.

?

We figured that it would take three 53-foot semis to do the job.? The trucking company guaranteed to do the job for $2,000 per truck including fuel and driver.? I contracted with temp labor at both ends, rented forklifts and the move was on.

?

All told the cost ran approximately $8,000 for the move.? A radical difference when looking at what the moving companies would charge to do the same job.

?

Guy, I respect your effort.? And with respect to Ed Breya’s comments given the availability of paper copies and PDFs of legacy manuals these days I hope the total end cost of shipping these documents doesn’t “sink the ship” (not literally) after this is all over.? I’ve been there with large quantities of manuals which ended up languishing in storage for years until it was decided that they were simply taking up space for no reason at all.? Now I am trimmed down to only those manuals required to support my current and legacy equipment.? It still takes up noticeable space but is much smaller that what previously existed.

Preserving history is nice but it also comes at a cost.

?

Greg

Wow. That's kind of a fascinating logistical problem and project. Just for practicality, I'd recommend rethinking things a little bit. It's kind of late in the game, but maybe some more investment of time and money up front can avoid shipping tons of scrap paper later.

I looked at the eevblog and Docmove project links, and I see how the story unfolds, and how complicated it is. It seems your main motivation is adding to your collection of technical documents to preserve them for the future. A noble cause, but I wonder about the practicality in this case. If you got this lot more or less sight unseen, then it's a (very) large random assortment of manuals. Looking at the pictures and descriptions, and doing some counting and mental math, I'd guess there may be four to seven thousand individual bound documents in the pile, and who knows how many loose pages. But, you should consider the statistics of the situation. Ideally, they would all be unique and special, and not redundant to what you already have in your collection. The chances of this are very, very slim. For instance, for each one-of-a-kind item you find, there could be a hundred copies of a high-running, popular product - these high-runners are the most common in populations simply because of the sheer numbers produced.

It depends too on the pre-selection process applied by the seller. If he was a serious collector, and painstakingly gathered and organized all these over many years, and saved one or two of each piece, then that would be great. Chances are though, that like many of us, you grab what you can when the opportunity arises, and you throw it on the pile to figure out later. Ultimately, the pile gets so big that you have to rent storage space until you have time to figure it out (which may never come), or have to move or such, and get rid of it quickly. Or, he may have been a manual seller, and it's just excess inventory. Or, he may have been involved with a document rescue activity. I remember when Manuals Plus went under, years ago, and there were a bunch of people and efforts applied to try to save and organize the inventory. That was at least a few years ago, and to this day, I have not heard of any results. This was on a scale much larger than your current situation - maybe a hundred times bigger.

So anyway, barring a meticulous collector, or maybe a lost da Vinci manuscript somehow buried in the pile, it's most likely a common collection of manuals from the era of its gathering. In this kind of situation, I'd apply the Pareto principle, to get some idea of the range of possibilities and value. In essence, most of anything is caused by a relatively small amount of something else. Here, I'd say that for your purposes, "uniqueness" is paramount, so one might say that 80 percent of the uniqueness is contained in 20 percent of the pieces. Or, it may be 90/10, or whatever, depending on the biasing. The point is that only a small fraction of all the stuff is of value in a particular situation - or conversely, you might say 80 percent of the stuff (and cost to get it home) is crap. So, the problem as always is figuring out what's good and what's crap, which you may find out eventually if you spend a fortune getting it home. The valuation and bias direction depend on the situation. If you're a manual seller, then you might say that 80 percent of the stuff is common, and more likely to be in demand (but not likely to fetch high price, since it's so common, while the relatively few rare items may be worth a lot, or zero, if they're so obscure that no buyer can be found). You can frame the situation in many ways, depending on what's needed, but the basic principle is the same.

An alternative is to go and visit the stuff, and do some of your own sorting. Instead of just arranging it all to be shipped, maybe you could fly to SFO, rent a car or van or truck, and go see it in person. From the writings, I think the cheapest part of the whole deal (aside from the purchase price and possible SYD-SFO trip(s)), is the storage rental - that can buy you some time to figure things out. I can picture a scenario where you drive to the storage place and can do some sorting and assessments on a lot of stuff, fairly quickly. The day one goal should be clearing out a workspace, say the first meter or so (maybe 3-4 stacks deep into it), or about 20 percent. The obvious crap can be set aside, the questionable tossed deeper into the pile, and any good stuff or gems go back to the hotel or stay in the vehicle. This should give a pretty good idea of the ratios to expect, and if it's not looking good, you can look into getting a dumpster delivered on site at the appropriate time. A second day should provide great progress, and better assessment of the situation. If it's mostly keepers, then you'll have more confidence in shipping it en masse. If not so good, then look into disposal or abandonment. Check with the storage management on their abandonment policies - I think they usually just sell off the contents or have it tossed after so many days of unpaid rent. You wouldn't want to leave it a mess or on unfriendly terms - just explain the situation and see if they're OK if you can't take it all in a reasonable time. Then, whatever you don't want can be left for disposal rather than expensively shipped and tossed anyway. Even if you have to pay some to get rid of it, it's likely ten times cheaper than bringing it home to do the same. You could also advertise it on craigslist - a free for all manual pickup for anyone who wants the leftovers, on an appropriate day of the project. Any more stay days can be determined by the results of the fist two - you may find it actually easy, or a PITA, but you'll have the presence, control, knowledge, and decisions.

Between various options of dumpsters, recycling, hauling some stuff in a rental car and storing in a hotel room temporarily, giving it away, or abandoning it, some combination should give I'm guessing, maybe two or three pallets of desired manuals and other documents - much less than a whole shipping unit container. Just as a ballpark figure, if the Pareto values are 80/20, then only 20 percent of the total manuals and other documents are 80 percent of the value - the trick is to effectively pre-sort (ideally the whole population), knowing and expecting to get rid of most, so that the result is better. The remaining 20 percent of total value may be contained in diminishing fractions beyond that. If you demand perfection in inspecting and deciding on each and every one, then you would have to pay to send them all home, and take all the time necessary. If you do this, there is no uncertainty, but it may take forever. All I can say is that without knowing more about the system, I'd expect that the total number of keepers will be around 20 percent, whether they're picked in Sacramento, or Sydney, accounting for 80 percent of the value. The difference is that if you can pick in Sacramento, you only have to ship about about one fifth as much stuff to Sydney. Thoroughly sorting for 100 percent yield can be done at either spot, but the number of pieces won't be very much different. Picking efficiency would be different, of course, with different pressures and conditions. If you do it at the source, there's limited time and resources, but saves a lot of shipping. At home, less pressure, but cost a lot to get the situation.

Ed

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Hi Yves,

Looks like my unit is thermal related as those ERR gone away after turn on for a while. I have it turned on for few hours now and feeding it?an FM modulated FM signal and everything sport on compare to another SA.

BRGds/Stanley

If NSW sorts out the COVID problem, I could be tempted to come over for a holiday and help unpack the container and catalogue. :^)

At 11:03 AM 12/01/2022 -0800, you wrote:

Bankers /legal papers boxes? $20 for 6 at Costco, etc.

Jon

Thanks, but the box problem is sorted. Today I will be buying 500 of these:
ULINE, PN S-4898. 18" x 12" x 18" (Length, width, depth internal.)
The container will fit 450 of them, but allowing some spares for wastage
and potentially some of the manuals not fitting in the container.

More details are coming together. But the current drama is some issues with the 'loading contractor'
and details of what happens with the container on a frame overnight at the storage unit site.
Also the loading quote.

But it's progressing. Fingers crossed.

Guy

i have in line a system with HP8511B i intend to add dir coupler in order to perform return loss .
my goal is to become to a system like 8517 .
i have 2 Wiltron dir coupler , by now i have used 1 with a power splitter , to use the two i need the switch power splitter that is present in HP8517..
If i find this switch power splitter how to connect in in order to have the auto switch as 8517 ?
where i can find docs if the HW involved in this switch power splitter that is present inside the 8517.
Ciao IW1EPY
Gianni

Bankers /legal papers boxes? $20 for 6 at Costco, etc.

Jon

Liam, I have been trying to reach you regarding the HP 3457 manuals
which I have bought from you. I need you to send them to me.

A gaylord box for sure... No-brainer.

Dear David

I am sure that you can easily solve this without consultants. PID motor control is a classic application of control systems theory. I took the course in 1965. We used a bode plotter from ESI to find the effects ofmp?les and zeros, with special Teledeltos plotting carbon paper and an HV stylus.

The engineering application of the second order differential équations are well documented in many papers, textbooks and courses. I highly recommend my old 1965 CCNY textbook Control System Theory by Dr Professor delToro, pub. McGraw Hill or Willey

The damping and bode plots are essential to understand how to tune a system response. Best system response is usually critical damping or slightly underdamped.

Are you simulating or have built hardware to test and tune? type and size of motor? load eg pump, fan, véhicule ?

bon courage et bon chance

Jon

hello friends,

I have a little problem in my 204B Oscillator.

This apparatus have a selfmade stabilizes PSU in the back, the DC voltage is near to perfect.
Ranges? x1 / x10 / x100 / x1k? works accurate in frequeny and signal level. OK

Range x10k:

from 5 to 7 there is no oscillation. At 8 it starts, with very low output, the frequency is around 3% higher then the button scale.

In center of the button scale it work OK, but the frequency is still around 3% more then on the button.

From 20 up the signal level goes lower and lower.

So I have a problem in the 10k range parts.

How to continue ? application is here.

Martin

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Hi Bruce,