Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 1823762 times)

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Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10325 on: May 04, 2018, 09:35:17 pm »
I was sure it never used to be. Clarkson did it in a Sunseeker Predator many moons ago... he probably had special dispensation, though  :)

Just had a look, 2008 was when they changed the speed regs on the Thames. I wouldn't have guessed it was as long ago as that, when I was last mucking about on the river, but it really is. Speed limits were only ever of theoretical concern to me, anyway, as I never had a boat that could break any of them. Even the 48' one topped out at 7.5 knts.
Yep Clarkeson would have had special permission as he does on everything else even getting roads closed for Top Gear.  :-+
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Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10326 on: May 04, 2018, 11:30:49 pm »
We used to have a perfectly good fleet of Harriers, Jaguars, Tornadoes and some nice new shiny Nimrods...
<politics deleted>

The Nimrods were never nice nor new nor shiny.

When first built in the 1970s, some bright spark decided to base them on the far too small 1950s Comet airframe. It was all downhill after that.
In 2011 there was a fleet of new Nimrods that were dismantled and destroyed before they had even flown, as part of the fore mentioned cuts this BBC clip relates to that tremendous waste of money.
http://www.bbc.co.uk/news/uk-england-12294766

I am aware of that. It does not change my points.
There are lies, damned lies, statistics - and ADC/DAC specs.
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Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10327 on: May 05, 2018, 01:35:10 am »
We used to have a perfectly good fleet of Harriers, Jaguars, Tornadoes and some nice new shiny Nimrods...
<politics deleted>

The Nimrods were never nice nor new nor shiny.

When first built in the 1970s, some bright spark decided to base them on the far too small 1950s Comet airframe. It was all downhill after that.
In 2011 there was a fleet of new Nimrods that were dismantled and destroyed before they had even flown, as part of the fore mentioned cuts this BBC clip relates to that tremendous waste of money.
http://www.bbc.co.uk/news/uk-england-12294766

I am aware of that. It does not change my points.
No, I don't suppose it will because thats your view, I was stating that there was some brand new ones that were destroyed before they had even been flown
Who let Murphy in?
 

Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10328 on: May 05, 2018, 07:36:57 am »
If you think that’s shocking, the poor NHS disposed of about 2000 PCs last year which didn’t even leave the suppliers. Basically just handed over the money for them. Then the suppliers charged them storage and disposal.

Going to ML&S today. That’s dangerous. Got my eye on one of these:

https://youtu.be/EWfgtKapVDU
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10329 on: May 05, 2018, 08:55:59 am »
Nice don't forget to go to the cash point before arriving.
Who let Murphy in?
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10330 on: May 05, 2018, 10:36:57 am »
Just a quick update on the RS calibration of 3478A meter (if you're all bored by it now :palm:) but I now have a date for its return, it will be dispatched on the 10th May so if they follow normal procedure, I should have it on the 11th Friday, if that happens then I rank that as first class considering we have had a bank holiday in that time as well.
Who let Murphy in?
 

Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10331 on: May 05, 2018, 10:49:27 am »
Excellent  :-+

Just got my bits in the post to play with the HP-IB bus today.
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10332 on: May 05, 2018, 11:59:19 am »
Did you get your SWR analyzer as well then?
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10333 on: May 05, 2018, 12:10:17 pm »
Nope. Haven’t gone out yet. Have just stood on some bloody Lego so might cancel the trip.
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10334 on: May 05, 2018, 12:12:19 pm »
Ouch, that stuff hurts especially if you aren't wearing any shoes at the time :scared:
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10335 on: May 05, 2018, 12:24:03 pm »
Hurt less than twisting my other ankle when jumping up and down shouting “ow fuck!”
 

Offline Brumby

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10336 on: May 05, 2018, 01:02:38 pm »
You auditioning for a comedy routine or something?
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10337 on: May 05, 2018, 01:22:37 pm »
I don't think he's auditioning, he is it.

BD139 has gradually turned into the TEA soap opera what with the Mrs' haircuts, the lego, the GPS and sticky faceprints on the window, decimated credit cards, exploding domestic appliances and the never-ending suspense of when will the oven get fixed:popcorn:
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 

Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10338 on: May 05, 2018, 01:25:08 pm »
I don't think he's auditioning, he is it.

BD139 has gradually turned into the TEA soap opera what with the Mrs' haircuts, the lego, the GPS and sticky faceprints on the window, decimated credit cards, exploding domestic appliances and the never-ending suspense of when will the oven get fixed:popcorn:
And amusing, isn't it ?  :phew:
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10339 on: May 05, 2018, 01:33:21 pm »
Actually you know all that bad karma you got rid of. It has to go somewhere >:(

On a positive note, i just wound a massive 145 turns on a toroid without cocking it up  8)

Edit: I’ve got a Mullard DG7 tube and some E cores floating around so I’m trying to play with some switching converters to drive the tube off 12V DC. Working out if I can get enough volts out of a big ass toroid as they don’t make as much noise as a badly constructed E core.
« Last Edit: May 05, 2018, 01:46:53 pm by bd139 »
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10340 on: May 05, 2018, 01:47:05 pm »
Actually you know all that bad karma you got rid of. It has to go somewhere >:(

On a positive note, i just wound a massive 145 turns on a toroid without cocking it up  8)
Keep that up and they'll have take back the PF title they bestowed upon you  :-DD
Who let Murphy in?
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10341 on: May 05, 2018, 01:50:01 pm »
On a positive note, i just wound a massive 145 turns on a toroid without cocking it up  8)

Spend £3 on a ebay tally counter, the mechanical kind. Saves on the "Was that 40 turns or 50 turns I just finished?" moments. You can just 'click' turns as you go or if the turns require two hands, do them in fives and then hit the tally counter 5 times.

After you buy it, put it somewhere logical, not "somewhere sensible" or you'll never find it when you need it. Perhaps in the same drawer/box as your collection of cores or spools of magnet wire. (i.e. I haven't a clue where mine is at the moment.)
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 

Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10342 on: May 05, 2018, 02:00:25 pm »
The counting isn’t a problem usually. The issue is usually that as it’s 0.2mm wire, it likes to snap half way through the winding. Fortunately this is the HV secondary so not subject to the current of the primaries so at least it’s not going to smoke anything instantly.
 

Offline Specmaster

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Who let Murphy in?
 

Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10344 on: May 05, 2018, 02:03:51 pm »
I’m winding toroidal cores which is a little more difficult unfortunately. 

Fair rite FT140-61.
« Last Edit: May 05, 2018, 02:05:44 pm by bd139 »
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10345 on: May 05, 2018, 02:52:34 pm »
You can get, or make, small toroidal winders. For small cores (but not tiny) it's not too hard to fabricobble one out of some plywood, a few rollers or skateboard bearings, and a small motor. It's one of those mechanisms that, even when you understand exactly how it works, still takes a good ten minutes imagining with your eyes shut to actually get your head around the actual workings.
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 

Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10346 on: May 05, 2018, 03:10:09 pm »
I’ve seen them before. They have a loop which you have to load up with copper first then it spins through the core. Very neat.

Not really worth it for the small number I wind a year however.

Got 208v out of 12v in. No core heating. Unfortunately MOSFET is spending too much time in linear region which is making it too hot. Will fix later.
« Last Edit: May 05, 2018, 03:12:49 pm by bd139 »
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10347 on: May 05, 2018, 03:25:25 pm »
You had that problem with the MOSFETs earlier didn't you?
Who let Murphy in?
 

Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10348 on: May 05, 2018, 04:30:35 pm »
I don't think he's auditioning, he is it.

BD139 has gradually turned into the TEA soap opera what with the Mrs' haircuts, the lego, the GPS and sticky faceprints on the window, decimated credit cards, exploding domestic appliances and the never-ending suspense of when will the oven get fixed:popcorn:

There's an argument that the oven is (or ought to be) piece of test equipment. I recommend
https://www.amazon.co.uk/Cooking-Geeks-Science-Great-Cooks/dp/1491928050/
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #10349 on: May 05, 2018, 05:11:04 pm »
My ex (a biochemist) used to say that cooking was "just bucket chemistry" - she's right.

Literally yesterday I was making some tomato sauce using tinned tomatoes. The level of "acidity regulator E330" that had been added to the tomatoes was way off, the sauce was sour as all hell. Another reach into the store cupboard, a quarter teaspoon of Na HCO3, and a few minutes and all was well again — the sauce now tasted like it ought to. A little knowledge of everyday chemistry goes a long way in the kitchen.
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 


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