Recent Posts

1

Projects, Designs, and Technical Stuff / Component identification

« Last post by gaminn on Today at 04:06:09 pm »

Hi,
any idea what is this?



The circuit is a low power switching power supply. The controller of the switching power supply is a hybrid IC (under the black heatsink).

2

General Technical Chat / Re: Silicone vs. PVC measuring leads

« Last post by tooki on Today at 04:04:06 pm »

Yeah, looks like RG316. But I’d argue those fall squarely into the “not everyday probes” I explicitly qualified in that reply.

3

General Technical Chat / Re: Silicone vs. PVC measuring leads

« Last post by bdunham7 on Today at 03:58:26 pm »

Nobody sells multimeter test leads with PTFE (Teflon) insulation because Teflon is way too stiff.

Well, actually these are teflon-core coax.  But yeah, they're stiff.

https://www.fluke.com/en-us/product/accessories/test-leads/tl2x4w-ptii

4

Projects, Designs, and Technical Stuff / Re: Digital weigh balance - DIY

« Last post by AnalogTodd on Today at 03:57:43 pm »

Fermentation vessels can be far worse.  Yeast actually accelerate under pressure.  So if you pitch yeast into sugar and seal it.  It almost certainly WILL explode violently.  This occurs far more often than you would think.  Just with bottles and priming sugar.  Either too much priming sugar or not letting the primary fermentation complete and it can produce enough pressure to shatter glass bottles if they capped tight enough.

Yeah, I had a fermentation go a bit wild one time in a glass carboy where I had the airlock working fine when I started the ferment but it bubbled enough to push material up that blocked the holes in the airlock. Fortunately, it was in the garage so at six a.m. the next day when the carboy reached its breaking point nobody was near it.

There were still shards of glass lodged in that ceiling when I sold that house years later.

5

Buy/Sell/Wanted / Re: SALE (AU/NZ): Multicomp Pro MP710086 (Owon P4305 rebadge) at element14

« Last post by Muttley Snickers on Today at 03:56:05 pm »

I was hesitant to grab that Tenma AWG which I knew was just a Unitrend UTG2025A, but figured it was $400 cheaper than the Siglent SDG1032X I was prepared to buy so worth having a play at that price.

6

Projects, Designs, and Technical Stuff / Re: Homebrew Lock-In Amplifier

« Last post by Picuino on Today at 03:56:02 pm »

Attached:
Signal in instrumentation amplifier output measuring a capacitor of 1000uF.

7

General Technical Chat / Re: Does anyone make good SSDs any more?

« Last post by coppice on Today at 03:54:48 pm »

M3CR046 never got published to their site, but it's easily downloaded and can be applied with hdparm. For older versions you can simply extract the firmware image and their own tool (which will do exactly the same thing as hdparm) from their bootable image.

They also offer both GUI and CLI Linux versions of the 'storage executive', which I've never felt the need to play with - but is the tool run by their own update images: https://www.micron.com/sales-support/downloads/software-drivers/storage-executive-software

Is there some key problem that is only fixed in M3CR046? I've never used an update that didn't come from Crucial's site, and I've never had a problem with the drives.

8

Test Equipment / Re: Recommendations on Logic Analyser for embedded debugging

« Last post by coromonadalix on Today at 03:53:54 pm »

the recent and supported ones are DSLOGIC  and Kingst LAxxx series

Saleae  is now defunct  and the one youll find  will cost you a leg

9

Mechanical & Automation Engineering / Re: High density connector troubleshooting

« Last post by DenzilPenberthy on Today at 03:52:01 pm »

Engineers' Blue.  https://www.cousinsuk.com/product/engineers-blue-marking

Available as paste but you probably want the thin dissolved-in-solvent type. Search for layout fluid
e.g. https://www.talbot-tool.co.uk/Products/engineers-layoutmarking-fluids

It leaves a super thin layer which makes layout with scribe lines etc much easier and more precise, and will show up witness marks where surfaces contact. e.g. setting up gearboxes to get the teeth meshing correctly.


The low-tech modern version of this is to just use a Sharpie to draw on a surface. You might have an easier time marking up connector pins with some engineers blue in a spray can though.

10

Test Equipment / Re: New Hantek DSO2X1X models?

« Last post by OLderDan on Today at 03:50:31 pm »

As of today, a new firmware version is officially available on the Hantek website.
https://www.hantek.com/download?key=fjzl&sid=3&pid=17182&word=

Looks to be the same software version already uploaded.