What did you buy today? Post your latest purchase!

[beanflying]

1960ies Siemens Decade Resistor Box. 1R-1,22M from epay. Sadly as it turns out not in decent shape as the seller described it.
Basically all but two decades where completely out of spec. Only the 1000R and the 100000R range were fine, all other resistors had drifted over 10% out of spec. On quite a few resistors the endcaps were loose so the resistance drifted with vibration, too.

A total mess, I paid way too much for it. Have to take that issue up with the seller.

But it looks so nice, I couldn't not spend 30,- EUR in new 1% resistors to make it all work nice again. Mind you original resistors were all 0,5% I'm not that crazy.

Nice old Box. But jump on in 0.1% won't hurt that much 

[chickenHeadKnob]

That is a pretty good find! Good luck with your sorting.

I myself can be considered pretty lucky as well (perhaps not as much as you), but I was able to get a huge assortment of vintage IBM peripherals and SW and also a few interesting components - all for free.

You didn't got something as a IBM Selectric? That is my grail.

No, I wouldn't be able to hold onto such large item at this moment. Although there are several that pop in the local used websites in different functional conditions.

As a kid I visited my dad's job a few times and marveled at the IBM Selectrics of the time. Quite the machines.

I am just old enough that I chanced to try  one when I was a teenager and just starting to mess with computers. They were slow. Something like 11 or 15 characters per second but had an absolutely magical clunky yet precise mechanical action. I instantly fell in love. They (it) were being replaced by cheaper DecWriters and the occasional daisy wheel printer in the computer rooms I could break into though.

[jonpaul]

Rebonjour, yesterday at Paris 7th arr. neighborhood sale, another  Bialetti Moka espresso 3 cup...NIB, EU10

The replacement gaskets or filter screens cost more than that...

[nightfire]

Just got some delivery of some adapters that should help me conduct some nice measurements of power usage of some electronic goods- especially the dreaded minimum standby current of plugged-in PSU.
Sadly, the Adapter Schuko->4mm jacks has to be returned, as one of the jacks is defective and the whole case is sealed/ultrasonic welded, so i cannot open it and fix it myself- a pity for some 45 Euro device.
The USB Adapter to 4mm seems nice, I probably will report how well it goes in measurung USB voltage and currents- I hope to be able to verify some readings of those pesky tiny USB-testers with this.

[jonovid]

1500 watt inverter 12v to 240v

[iJoseph2]

Some banana plugs and cable for speaker wires

Some XT60 connectors for battery packs

Meanwell PSU for external hard disk


https://www.aliexpress.com/item/1005004267177494.html

https://www.aliexpress.com/item/1005003058991433.html

https://www.ebay.co.uk/itm/284407596332

https://www.aliexpress.com/item/32995703291.html

[PlainName]

That capacitor must have terrible ESR!

[iJoseph2]

That capacitor must have terrible ESR!

Which one?

[PlainName]

The one that says 240V in, 5V out.

[Vincent]

...isn't that the power supply's label? 

Unless that was sarcasm LOL.

[PlainName]

Yes, a bit of tongue in cheek.   

[iJoseph2]

Yes, a bit of tongue in cheek.   

doh! you had me there 

[gamalot]

FLUKE 884X-SHORT LEAD from element14

Ordered on March 26, shipped on April 22, delivered on May 10, , in a HUGE box. 

I bought this six years ago at element14 for AU$40 and now I want to buy another one, I have seen clones on Aliexpress for as low as AU$20, but I think I don't mind spending AU$20 more at Fluke Brand and free express. So I went to element14 to place an order and I was stunned by the price!

[beanflying]

For shorts and such these look good No idea if he is here or not but I like the options https://www.ebay.com.au/usr/krasimir.k?_trksid=p2047675.m3561.l2559

[Dave]

For shorts and such these look good

They may look nice, but they're not good.

These will not actually behave as a proper 0 ohm short, because the current from the force terminals will affect the voltage between the sense terminals. Might not matter on a low-end meter, but it will definitely be visible on a 7.5 or 8.5 digit meter.
Take a look at how Fluke have done it.

[beanflying]

And just where was there any discussion about 8 1/2 digits  Maybe 2-3% IF THAT of the active member base have a meter in that class or plans to get one so for the other 97% GOOD is what they are!

As to 'low end meter' 5 or 6 1/2 is only that if you are a pretentious twit.

[daqq]

And just where was there any discussion about 8 1/2 digits  Maybe 2-3% IF THAT of the active member base have a meter in that class or plans to get one so for the other 97% GOOD is what they are!

As to 'low end meter' 5 or 6 1/2 is only that if you are a pretentious twit.

The point is that the design is objectively wrong and it's actually simpler to make it right.

[beanflying]

And just where was there any discussion about 8 1/2 digits  Maybe 2-3% IF THAT of the active member base have a meter in that class or plans to get one so for the other 97% GOOD is what they are!

As to 'low end meter' 5 or 6 1/2 is only that if you are a pretentious twit.

The point is that the design is objectively wrong and it's actually simpler to make it right.

If you are trying to make some sort of point on thermal issues caused by heavier traces then look at the 4mm Bananas and almost certainly mismatched materials and try again  When you get into the weeds of 8 1/2 digits and under PPM so be it but then far more likely you would be not using bananas at all.

Not the place for a Metrology discussion but some reading here on what is better practice for shorts https://au.flukecal.com/literature/electrical-calibration/watch-out-those-thermoelectric-voltages-cal-lab-journal-reprint

[armandine2]

light but not all laughs - SJ200 Gaussmeter

[Ed.Kloonk]

Gaussmetering is very serious business.

[jonpaul]

Bonjour à tous

Au Marche au Puces (Flea market) Porte de Vanve Paris...three  Italien  Moka posts,
a 1 and two, 3 cup..total  €10
one like new,  two need gaskets and through cleaning...


Also,  a vintage 1950s French police cap,
great condition, fits, the violet trim of a police radio spécialiste. €5

Bon week-end

Jon

[Dave]

And just where was there any discussion about 8 1/2 digits  Maybe 2-3% IF THAT of the active member base have a meter in that class or plans to get one so for the other 97% GOOD is what they are!

Coincidentally, that minority that obsesses over expensive multimeters and metrology is the exact target audience for a 4-wire short. The vendor is also marketing the product as such (attachment below).

Did some ballpark math based on the picture provided by the vendor. I estimate the short behaves as roughly 260μΩ when measured in 4W mode. This means it affects the least significant digit on a 6.5 digit meter with the lowest range of 100Ω, but more digits on more sensitive meters. My previous statement stands.

As to 'low end meter' 5 or 6 1/2 is only that if you are a pretentious twit.

You shilled a poorly designed product, get over it.

[beanflying]

And just where was there any discussion about 8 1/2 digits  Maybe 2-3% IF THAT of the active member base have a meter in that class or plans to get one so for the other 97% GOOD is what they are!

Coincidentally, that minority that obsesses over expensive multimeters and metrology is the exact target audience for a 4-wire short. The vendor is also marketing the product as such (attachment below).

Did some ballpark math based on the picture provided by the vendor. I estimate the short behaves as roughly 260μΩ when measured in 4W mode. This means it affects the least significant digit on a 6.5 digit meter with the lowest range of 100Ω, but more digits on more sensitive meters. My previous statement stands.

As to 'low end meter' 5 or 6 1/2 is only that if you are a pretentious twit.

You shilled a poorly designed product, get over it.

Your 'estimate' is almost certainly wrong and is based on your conclusion then worked backwards to 'prove' your LSD attempted point. Last time there was a THREAD on this I remember it was in the 10's of nV with this sort of layout well below the LSD on a 6 1/2 digit meter.

These are NOT aimed at the 8 1/2 digit crowd and by that show me anyone who is serious that is going to use Bananas in that situation for a start? Anyone with an 8 1/2 digit meter I would hope knows what is needed rather than attempting to underline in RED a portion of an evilbay listing. Try reading the Fluke link above as to what they consider a better practice. You might even learn something.

As to 'shilled' seriously  I offered a link to a 'good' alternate I have no idea who the manufacturer is and I have nothing to gain financially. Seriously get over your windbaggery!

[alm]

These are NOT aimed at the 8 1/2 digit crowd and by that show me anyone who is serious that is going to use Bananas in that situation for a start?

Well, probably most people owning a Keithley 2002

[beanflying]

These are NOT aimed at the 8 1/2 digit crowd and by that show me anyone who is serious that is going to use Bananas in that situation for a start?

Well, probably most people owning a Keithley 2002

Some rustic options here

https://www.eevblog.com/forum/testgear/diy-34401a-calibration/