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Test Equipment Anonymous (TEA) group therapy thread

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BravoV:

--- Quote from: Berni on May 31, 2018, 05:45:08 pm ---
--- Quote from: BravoV on May 31, 2018, 01:10:20 pm ---2.5GHz thingie, not my fault, blame Berni.  :palm:


--- End quote ---

Nice one. No need to thank me. This is what the TEA group is for.

But im sure you will enjoy the probe. I used my infiniium versions of them a lot and they run circles around any passive probe for high speed digital use.

--- End quote ---

I'm quite surprised that the probe's body is heavy, if connected directly and hanging horizontally, perpendicular with the equipment front panel, worry that the stress caused by it's weight will wreck the N terminal at the spectrum analyzer or at the scope's BNC terminal using the included N to BNC adapter.

Thinking of using a L shape adapter, to make the probe body parallel with the equipment front panel, and I guess this should help to relieve the stress by resting part of the body weight on the bench surface, rather than hanging horizontally, how do you use yours ? Or I'm worry too much ?

mnementh:

--- Quote from: tggzzz on May 31, 2018, 04:37:16 pm ---
--- Quote from: Specmaster on May 31, 2018, 03:23:28 pm ---Hmm algae and grease, you might as well give up then cos you're  a voltnut.   ;D

--- End quote ---

... if I fall and hit my head, will anyone notice any difference :)

--- End quote ---

Depends... How big a dent you think you'll make?   :-DD


mnem
*Hanging onto my sanity by a thread*

tautech:

--- Quote from: bd139 on May 31, 2018, 03:31:23 pm ---When I see connectors and inlet provision like that Solartron, they get IEC-ized instantly!

....

Not really TEA but I have been suitably impressed today. Playing with some PIC10F320 microcontrollers. I think it is bloody amazing that you can get a whole damn computer in a SOT-23 package now. Literally all I'm using it for is generating two digital signals 180 degrees out of phase to drive inverter MOSFETs and enable/disable itself based on an ADC sample. This does however replace an entire 74hc14, regulator, a 2n3904, a trimmer and some external passives that were doing the job before with just itself, a tant and a much smaller regulator. Impressed :-+

It's bloody tiny. That's a DIP / SOIC footprint board.



And yes I did lose the first one on the floor  :-DD

--- End quote ---
SOT23-6, real fun to route a board for when you need to get power traces from each side into the middle pin.
Soldering is not as hard.  ::)

I use a little dual complementary MOSFET as a driver and they're great fun to work with.

bd139:
I notice they solved that on some devices like opamps by having variants with different pin outs. Soldering SMD stuff is really easy. Easier than TH when you get the hang of it. Quite enjoying it.

Now you’ve got me looking for MOSFETs. I’m using two larger IRF510’s at the moment but something much smaller will work. Might even kick the frequency up a bit and use a smaller transformer.

tautech:

--- Quote from: bd139 on May 31, 2018, 08:56:26 pm ---I notice they solved that on some devices like opamps by having variants with different pin outs. Soldering SMD stuff is really easy. Easier than TH when you get the hang of it. Quite enjoying it.

Now you’ve got me looking for MOSFETs. I’m using two larger IRF510’s at the moment but something much smaller will work. Might even kick the frequency up a bit and use a smaller transformer.

--- End quote ---
I don't drive these fast at HF mainly just for a capable buffer from logic to power devices that aren't available with logic level inputs. Some reckon I'm doing it wrong and will suffer shoot though issues but I've not seen any and I think I have good enough gear to find it if it was there. Just be mindful of it.  ;)

Edited above for clarity.
Gate rise times are still quick.

There might be better ones available now but I've stocked up a while back ...........

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