Test Equipment Anonymous (TEA) group therapy thread

[mnementh]

CGS minutes.

Just spent twenty minutes watching weasels kill stuff on YouTube. Going to bed 

Well you were weasily satisfied, given that you've obviously decided to ferret out something stoataly different to do after only 20 minutes.

There aren't enough soggy ol' boots in all of Christendom...

mnem
Well played ya ornery ol' galoot... well played.

[0culus]

More curve tracing fun. Apologies for the slight parallax...I grabbed this with my phone as I felt too lazy to set up my tripod and dSLR. I really need to move forward with modding the C-12 camera I have to admit a modern camera.

Anyway, I could have really used this when I was building Jim Williams pulsers. Rather than guess at when your transistor might avalanche, you can determine exactly where it will avalanche. The setup is a pair of otherwise identical NOS Motorola 2N2369, the same transistor Jim used. Note that the first one is not avalanching at all at 30V on the collector sweep, but the second one is. The first requires significantly more voltage before it will avalanche. Settings are 30V collector sweep, .5 mA/div vertical, 5 V/div horizontal, .02 mA/step, and 5K dissipation limiting resistor selected.

[jxjbsd]

The picture was taken very well.
What type of curve tracer instrument is this?

[jxjbsd]

That's just... wow. The hair on the back of my neck stood up. Everything aboot the layout and the PCBs on that thing just feels like golden age Sony; but the chassis and CRT fixtures still feel Textronix.

It's like some unholy demon child... I want one.

mnem
 

His PCB is very close to 454A.

[BravoV]

The picture was taken very well.

Its relatively easy, details -> HERE

[Robert763]

787 battery was Li-ion not LiPo Lots of E-cig issues and they arn't LiPo either

787 battery was high-density prismatic cells. The e-cig "issues" are primarily from modders deliberately exceeding the safe discharge rates of the cells, and not explosions, but rather wires melting and/or burning. No different from similar meltdowns that happen just as easily with low-iR NiCds. Now you're blaming the technology for the stupidity of ElectroBoomers.

mnem
 

Please LEARN and open your mind about batteries you are cherry picking a single case to lambast a whole technology. Stop it and stop throwing rocks based on this To continue this is real 

I have been using ALL battery technologies in R/C electrics for nearly 30 years. NiCads, Nimh and Lipos have all smoked and I have seen flames come out of ALL of them when abused physically or poor charging. In my now well over a decade of LiPo use I have had a few puff in the early ones from pushing them to hard but never had the smoke come out including in some major impacts.

A/ We were not discussing LiPos
B/ It's not a single case.
C/ I thought everyone was done with this.

[beanflying]

I thought you were the one continuing the  so pull your head in!

[Saskia]

A friend of mine had a LiPo explode on him while charging.

The resulting fire caused a lot of property damage, the house was uninhabitable for several months.

YMMV. But I do not trust these suckers.

[med6753]

Wakes up...looks around. See's the same  as yesterday. 

Going back to bed. 

[bd139]

LiPo packs don't bother me.  Just don't buy no brand ones with no protection or charge controller, never charge them when you're out or asleep or leave them unattended and make sure you have suitable fire extinguisher, smoke alarm and insurance. This is all safety first 101 stuff

[jxjbsd]

It looks beautiful, but it doesn't show anything. I measured high and low pressure, both normal, suspected CRT damage

Something unfortunate happened.

[BU508A]

Uh-oh! 

White getter! Never a good sign!

Do you have a spare tube?

[jxjbsd]

Of course not.  This oscilloscope is a relatively rare model.It's hard to find CRT accessories.

[bd139]

Uh-oh! 

White getter! Never a good sign!

Do you have a spare tube?

The getter got got!

[jxjbsd]

I can clean it up now, pack it up, put it on the shelf and wait for an available CRT.
I hope it doesn't take more than 10 years.

[Specmaster]

I can clean it up now, pack it up, put it on the shelf and wait for an available CRT.
I hope it doesn't take more than 10 years.

Can you not get that one reconditioned at a specialist?

[jxjbsd]

I can clean it up now, pack it up, put it on the shelf and wait for an available CRT.
I hope it doesn't take more than 10 years.

Can you not get that one reconditioned at a specialist?

There are so many uncontrollable factors that I choose to give up.
thank you！

[Cerebus]

There aren't enough soggy ol' boots in all of Christendom...

Have you considered importing dusty old sandals from the Mohammedans?

[Saskia]

I would not touch them with a pole.
And I don't care much about the poles, either.

(Mr. Hazeltine in Billy Wilder's One Two Three)

[BU508A]

For the Tektronix experts:

Is this R&S branded scope a Tektronix? To me it is looking a bit unfamiliar.



Source:
https://www.ebay-kleinanzeigen.de/s-anzeige/rohde-schwarz-100-mhz-oszilloskop-typ-bol-374-2000-02/1605348201-168-16405

[0culus]

The picture was taken very well.
What type of curve tracer instrument is this?

Tek Type 575

[bd139]

For the Tektronix experts:

Is this R&S branded scope a Tektronix? To me it is looking a bit unfamiliar.



Source:
https://www.ebay-kleinanzeigen.de/s-anzeige/rohde-schwarz-100-mhz-oszilloskop-typ-bol-374-2000-02/1605348201-168-16405

Took some digging but it's a rebranded Panasonic VP-5512A 

http://www.buy17.com/JP/Panasonic/vp5512a.htm

Edit: and that was a welcome break from work.

[Saskia]

yayy. vacation until Jan 4.

[mansaxel]

yayy. vacation until Jan 4.

You and me both.

[bd139]

Lucky sods. I'm stuck on my own until the end of the 23rd as everyone else buggered off on holiday