Test Equipment Anonymous (TEA) group therapy thread

[med6753]

Good news.  Mouser is back up and they kept their promise to ship on Monday. In addition they upgraded the shipment to UPS next day. 


Dear Papa Smurf;

Your purchase order number 21031592 is being processed by our warehouse and will ship out on 02/22/2021

We appreciate you placing this order through our website.

You requested your order be shipped by UPS 2nd DAY AIR.
To ensure that you receive your order on the day you expected it, Mouser has upgraded your order to ship UPS NEXT DAY AIR at no additional charge to you.

You are a valued customer and we appreciate your business.
If you have any questions, comments, or if we can assist you in any way please let us know.
You can reply directly to this e-mail.


Thank you,

The Mouser Internet Sales Team
orders@mouser.com
Mouser Electronics, Inc.
A TTI Company

[capt bullshot]

Haha.

No more selling. I’m done. This is a keeper

Let's wait two months and look if you've still got it

[capt bullshot]

Re: Electronic Loads

As "good" and "reasonable price tag" ones appear to be quite rare at the usual sources, and for a project I needed one with CC / CV / CP modes that can do more power than the HP6632B, I bought a cheap one two months ago:
The Kunkin KP184 - 400W in a quite small box. Nothing fancy, not a reputable brand, totally misplaced between all the Toellner, Heinzinger, Oltronix, HPAK etc power supplies, but it does the job.

[McBryce]

Are RS brand tants usable or crap?

Am reconsidering my recap'ing strategy on the Studer 169 mixer which started out as "doing the FRAKO lytes only" into "do the tants too".

The parallel nature of analog mixing desks makes for slightly insane component counts even for simple circuits (and this one is deceptively simple!); I'm ways through a 200 large stash of 100µF and 220µF electrolytes and not done. So, any component I select is going to hit some volume discount, but in some cases still expensive.

I usually buy them here: https://www.taydaelectronics.com/capacitors/tantalum-capacitors.html

Take a couple of weeks to turn up.

RS are ridiculously expensive

They also apparently sell kids for 560$

https://www.taydaelectronics.com/triacs/g8580-dup-wima-fks2-4-7-nf-0-0047uf-100v-5-polyester-film-box-type-capacitor.html

That's just the piece price, it's the TCO that will cost you a fortune.

McBryce.

[Robert763]

I think, I'll order next month an electronic load from Maynuo @Welectron.
This one: https://www.welectron.com/Maynuo-M9812-Electronic-Load

I need an electronic load. I've already not done some things because of the absence of the same, and I've got projects in the pipeline that would make good use of one. I've been looking for a second hand one for a goodly while, but so far I've come up empty. I'm close to the point where I'm considering buying new, but every time I start looking at them, like that Maynuo, I keep coming up against the prices. That Mayuno is €620 and it seems a lot for what it is. I'm having a hard time persuading myself that the price of a very good HP 34401A is worth it for an electronic load.

Is it just me, or do other people think that the prices for electronic loads are rather high in terms of "bang per buck" compared to other types of TE?

Yes,
I built my own years ago. Just a bunch of power MOSFETS in parallel on a fan cooled heatsink. Initially I just drove the gates with athe summed output of a 10 turn pot and a pulse generator (for step response) but later added a couple of op-amps for feed back. 
Picture of it testing  13.8V PSU

[Zucca]

Just looking at my TTi LD400P on my bench....



everytime I use it... well.... it's like....

[AVGresponding]

Someone got a serious bargain here:

https://www.ebay.co.uk/itm/Tektronix-1731-1721-764-1741A-WFM601A-11-Gerate/353383442481


Possibly also a serious lower back problem...

[bd139]

Yep. The seller got his trash taken away for €1 

[McBryce]

I think, I'll order next month an electronic load from Maynuo @Welectron.
This one: https://www.welectron.com/Maynuo-M9812-Electronic-Load


Anybody an idea where to get these nice 4mm banana adapters for the input jacks?

Do you really need the 300W version? I got a 150W Maynuo M9710 on Aliexpress for under €250 with free shipping. Great piece of kit. Invaluable when you are designing/testing a PSU.

McBryce.

[Robert763]

Yep. The seller got his trash taken away for €1 

I would not take that lot for free delivered. No market for analog video vectorscopes and those modern ones have mostly custom devices.

[beanflying]

Yep. The seller got his trash taken away for €1 

50 quid for knob value 

[vk3yedotcom]

My look at the HF Sigs Antuino mentioned earlier in this thread back in 2019.

[AVGresponding]

Yep. The seller got his trash taken away for €1 

50 quid for knob value 

Exactly, it's worth it for the common parts, not to mention the cases for projects.

[mnementh]

I certainly hope he was able to do local pickup. That P/H is horrific.

mnem

[mansaxel]

Yep. The seller got his trash taken away for €1 

I would not take that lot for free delivered. No market for analog video vectorscopes and those modern ones have mostly custom devices.

True, analog vector scopes are kind of "meh", even though we at work still produce PAL blackburst in our synchronisation plant.  Most of our measurement stations for video retain PAL analysis capacity as an oldtimer nod. 
The AES3 monitors did pique my interest, though. That's something we still use.

[mnementh]

Yep. The seller got his trash taken away for €1 

Buyer will be able to recoup purchase price just recycling the loose bits of aluminum. 

I do see a lot of smashed bezels and screen burn... honestly, being stripped for BNCs and knobs might be the best thing anyone could do for that little mountain of obsolescence. 

mnem
 

[med6753]

Yep. The seller got his trash taken away for €1 

Buyer will be able to recoup purchase price just recycling the loose bits of aluminum. 

I do see a lot of smashed bezels and screen burn... honestly, being stripped for BNCs and knobs might be the best thing anyone could do for that little mountain of obsolescence. 

mnem
 

Agreed, I see nothing more than scrap value.

In other news......my new router is out for delivery. 

[mnementh]

@med: I know... it sucks, and you know how I do love me some vintage Tek iron... 

Re: Electronic Loads

As "good" and "reasonable price tag" ones appear to be quite rare at the usual sources, and for a project I needed one with CC / CV / CP modes that can do more power than the HP6632B, I bought a cheap one two months ago:
The Kunkin KP184 - 400W in a quite small box. Nothing fancy, not a reputable brand, totally misplaced between all the Toellner, Heinzinger, Oltronix, HPAK etc power supplies, but it does the job.

https://www.eevblog.com/forum/testgear/fixing-an-manufacturer-issue-of-the-kunkin-kp184-electronic-load/

https://www.eevblog.com/forum/testgear/e-load-kunkin-kp184-vs-east-tester-et5420-accuracy-adc-dac/msg3211632/#msg3211632

Looks like I have something to watch over coffee & eggs. 

mnem

[Robert763]

Yep. The seller got his trash taken away for €1 

50 quid for knob value 

Proper disposal of 11 CRTs - £100

[Robert763]

Yep. The seller got his trash taken away for €1 

Buyer will be able to recoup purchase price just recycling the loose bits of aluminum. 

I do see a lot of smashed bezels and screen burn... honestly, being stripped for BNCs and knobs might be the best thing anyone could do for that little mountain of obsolescence. 

mnem
 

Agreed, I see nothing more than scrap value.

In other news......my new router is out for delivery. 

Who wants 75R BNCs ? 

[mnementh]

Oh FFS. You're right. NOBODY want them. For ANYTHING. There, are you happy?

mnem
Who fucking cares...?

[bd139]

You never know. That crazy person who bought my D83 junker ages ago wanted to use it for a stage prop, didn’t know that it was as large and heavy as it was and wanted to get me to show her how to put a sine wave on the screen  . Turned up expecting to take it home on a bus 

[mnementh]

I remember bringing home a pair of 18" driver CV musical instrument speakers on the bus with my best friend when I was young & dumb & fulla cum. 

mnem
"Hand truck...? What the fuck is that...?"

[med6753]

Oh FFS. You're right. NOBODY want them. For ANYTHING. There, are you happy?

mnem
Who fucking cares...?

Seriously? Are we gonna pick up where we left off yesterday? Robert was merely pointing out that they are 75 ohm BNC's. Not much good for anything unless you own a cable TV company or security camera outfit.

You should feel embarrassed......you made a fool of yourself yesterday and here we are, different day, same attitude. I frankly feel embarrassed for you watching the crap fly back and forth. I think it's safe to say that many in here are beginning to think you're a whiny gash.  I suspect you don't want that.

Now step away from the keyboard, go stand in the corner, kick yourself in the ass 10 times, and come back a new person.   

[Cerebus]

Who wants 75R BNCs ? 

Beardie weirdies. Erm, sorry, I meant to say "distinguished members of the amateur radio fraternity".