Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 2431452 times)

Martin.M, Andy Watson, SeanB, mnementh, bd139, xrunner, Frex, YU7C, Cubdriver, WastelandTek and 16 Guests are viewing this topic.

Online mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47475 on: January 20, 2020, 02:08:53 am »
Hallmark moment: Taking care of my Sick son. Pump him full of cold medicine, let him watch Austin Powers and giggle.  :-DD

mnem
*couch-tuber-time widda son*
Great films, which one is that you're watching?
I think just the first one is more than enough brain damage for one evening.  :-DD

mnem
"How did that get in there...?"
 

Online mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47476 on: January 20, 2020, 03:20:37 am »
   @mnem Studying the photo it looks like there is a 5V setting on the output and I have found a dedicated C-3U service manual, the U standing for the UK model and it has the following DC ranges so is pretty good for modern low voltage capacitors as well, 5V, 25V, 150V, 250V and 450V. So hopefully when it arrives it will be after replacing the selenium diode with a IN4007 and a suitable dropper resistor winner winner, chicken dinner  :-+

Hmmm... yeah. Since the circuit CAN go down to 5V, modding to add more useful ~16V , ~35V and ~50V ranges should be a cinch. The models I've seen all had like a 150V range & a 350-450V range. Period. |O

Keep us posted if you decide to go there!

mnem
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« Last Edit: January 20, 2020, 03:24:03 am by mnementh »
 

Offline alextwin007

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47477 on: January 20, 2020, 07:19:33 am »
I saw tiny scope and my eye's lit up a bit. 
However I just joined the Nixie club and won 2 ebay auctions today so I should take it easy  :palm:
Also it's in NZ, and shipping would be a lot :'(

Anyone want a itsy bitsy teeny weeny scope:
https://www.trademe.co.nz/antiques-collectables/clocks-scientific-instruments/listing-2497592780.htm?rsqid=6f40f0c80f454c539056deb775be8277-001

Currently @ 10 NZD


Having a test equipment addiction is difficult when you don't have a lot of room.  The solution, only collect small adorable test equipment.

Looking for a tek 1401 / 1401A, if you have one message me
 

Online Martin.M

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47478 on: January 20, 2020, 11:49:42 am »
 

Online Martin.M

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47479 on: January 20, 2020, 12:01:20 pm »
I think that is the little GEC  ^-^
but a hard job to make it fine.

Now starting a project for the Maker Faire.
It must be a construction where the people think how many sick in the head must be the person who made that  :palm:
 
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Offline FransW

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47480 on: January 20, 2020, 01:44:10 pm »
Martin,

Know yourself and be happy.
With the painters, the pyrotechnicians, the time & volt-nuts, the dwagons, and
all the anonymous contributers.
Frans
« Last Edit: January 20, 2020, 01:49:59 pm by FransW »
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47481 on: January 20, 2020, 02:31:56 pm »
Wow, weve reached 1900 pages already and we're only a tad over 2 years old  :-DD
Who let Murphy in?
 

Offline BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47482 on: January 20, 2020, 03:54:36 pm »
Wow, weve reached 1900 pages already and we're only a tad over 2 years old  :-DD

Bunch of gossipy people we are.  :palm:      :-DD
« Last Edit: January 20, 2020, 04:13:41 pm by BU508A »
“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 

Online mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47483 on: January 20, 2020, 03:55:09 pm »


Awwww... it juss a bay-beeee... :-DD

mnem

« Last Edit: January 20, 2020, 03:58:14 pm by mnementh »
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47484 on: January 20, 2020, 04:22:09 pm »
Bunch of gossipy gobby people we are.  :palm:      :-DD

There, FTFY.
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 
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Offline BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47485 on: January 20, 2020, 04:30:32 pm »
Bunch of gossipy gobby people we are.  :palm:      :-DD

There, FTFY.

:)    :-+

Thanks.

LEO gave me this list:



« Last Edit: January 20, 2020, 04:33:31 pm by BU508A »
“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 

Offline Messtechniker

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47486 on: January 20, 2020, 05:16:01 pm »
"gobby" = German "geschwätzig" is based on London dialect
where gob means "Mund" as for "gob stopper" = Schnuller.

Probably "gob" is related in some way to German "Gaumen"
both sharing the letter "G"
« Last Edit: January 20, 2020, 05:17:52 pm by Messtechniker »
Agilent 34465A, Hameg HMO1022, R&S HMC 8043, Voltcraft VC 940 and M-Audio Audiophile 192
 
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Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47487 on: January 20, 2020, 05:47:24 pm »
Avid Rabid Hobbyist
 
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Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47488 on: January 20, 2020, 05:54:26 pm »
"gobby" = German "geschwätzig" is based on London dialect

Not just London. The use of "gobby" = "talks too much/is prone to (inappropriate) answering back"* is pretty universal from southern England (but not the south west for some reason) and all the way up to Scotland.

Which reminds me of the poetic, principally Scots, term "gobshite" as in "He always talks errant nonsense"; typical usage "If that wee gobshite d'nay shut up sometime soon, he's ganee feel the end o ma boot".

* The meaning is context sensitive.
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 
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Online Martin.M

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47490 on: January 20, 2020, 06:34:23 pm »
 
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Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47491 on: January 20, 2020, 06:40:00 pm »
Anyone want a itsy bitsy teeny weeny scope:
https://www.trademe.co.nz/antiques-collectables/clocks-scientific-instruments/listing-2497592780.htm?rsqid=6f40f0c80f454c539056deb775be8277-001

Currently @ 10 NZD



Im am interested :) but I have no account for that shop
I do.......if you really do want it.

up to 30$ not more. (+postage of coarse)
USD ?
NZ cross rate to US$ is currently ~66c which converts to ~NZ$45.
Avid Rabid Hobbyist
 

Offline med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47492 on: January 20, 2020, 06:41:38 pm »
This installment will complete the compensation adjustments on the CA plug-in.

Here's an internal view of the CA plug-in. The compensation variable capacitors are all neatly arranged on the far right in a row. Channel A top, channel B bottom.



The test set up. Heath IG-4244 Scope Calibrator set to fast rise time 1Khz square wave and the Fluke 1900A Frequency Counter connected to the 535A Vertical Signal Out as a monitor.



Of all the attenuators the only one was slightly off. Channel A, 0.5V/div.



Fixed.



Now the IG-4244 set to 1MHz.



Amazingly good 1MHz waveform. The bandpass of the CA plug-in is 27MHz while the 535A is only 15MHz. So the 535A sets the total system response.



Next up......a more involved frequency response check.
An old gray beard with an attitude.
 
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Offline alextwin007

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47493 on: January 20, 2020, 06:45:24 pm »
My ebay watch list is filled with obscure tiny scopes.  At one point I was even convinced to make an instagram for my NLS ms-15 scope :P.   Although tiny spectrum analyzer add on for tiny scopes are also great, I love the tek 1401.  For great obscure oscilloscopes I love the yamaha pt3 tuner, it was a scope designed for tuning instruments, a very specialized piece of adorable kit.

https://www.oscilloscopemuseum.com/oscilloscope-yamaha-pt3-s5049.html

Having a test equipment addiction is difficult when you don't have a lot of room.  The solution, only collect small adorable test equipment.

Looking for a tek 1401 / 1401A, if you have one message me
 
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Offline med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47494 on: January 20, 2020, 06:49:11 pm »
That PT-3 is cool.  :-+
An old gray beard with an attitude.
 
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Online bd139

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Online WastelandTek

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I'm new here, but I tend to be pretty gregarious, so if I'm out of my lane please call me out.
 

Offline med6753

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An old gray beard with an attitude.
 

Online nfmax

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47498 on: January 20, 2020, 07:38:04 pm »
My ebay watch list is filled with obscure tiny scopes.

I'll bet your hovercraft is full of eels, too!  ;)
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #47499 on: January 20, 2020, 07:44:58 pm »
Another steamer  :palm: :palm: :palm: :palm:

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F303344717122

Sigh. Now, if it also indicated the mains frequency there might be some excuse, but...
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 
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