Recent Posts

1

Power/Renewable Energy/EV's / Re: Aussie Fast Charger Company Tritium Goes Bust

« Last post by uer166 on Today at 06:21:09 am »

I would expect the Tritium products to be decent, reliable and higher tech designs.

Eehhh as someone who's seen the internals of one I'd slightly disagree. It's a very messy design with a clear lack of integration/vision. Wires everywhere, myriad of interconnects, and a general sub-par design of the assembly. Unimpressive specs, and complete lack of network security at all as well.

They were/are stuck about 15+ years in the past and for whatever reason did not or could not innovate.

If you want reliable and optimal power electronics you'd go with Tesla power electronics.

2

Other Equipment & Products / Re: Dymo 550 Thermal Printer DRM Hacking

« Last post by RethoricalCheese on Today at 06:20:28 am »

Use S0722370 instead of 30252. Both are same size, right?

I found that those short model number variants did not work for me but those starting with S do work.

3

Test Equipment / Re: SDS800X HD Wanted Features

« Last post by eTobey on Today at 06:19:23 am »

Modify the rules for adding wanted features list. "Wanted features" need the "Say Thanks  " of two other people besides yourself, so you need to describe usage scenarios clearly so that you can get the approval of others.

Who is reading all the posts when there is so much unrelated text? Good features might be missed in between.

4

General Technical Chat / Re: Russia and China to Build a Nuclear Plant on the Moon.

« Last post by Andy Chee on Today at 06:19:00 am »

high power reactor cooling in space will be biggest challenge because there is no way to dissipate excess heat

Sure there is.  The same way the sun sends its heat to earth.  Radiation.

Heat can transfer in four ways; phase change, conduction, convection, and radiation.

Whether a high powered nuclear reactor can be cooled via radiation alone, now that's an engineering challenge.

5

Metrology / Re: Philips PT 2248 Ref. Unit, any Manuals?

« Last post by goaty on Today at 06:13:42 am »

Got one just now. Need to carefully try to start it up as its 220V.
Anyone knows what it was for ?
Interresting bit of kit.

6

Test Equipment / Re: Hacking the Rigol DHO800/900 Scope

« Last post by AceyTech on Today at 06:02:29 am »

I'm making changes directly to the latest Sparrow.apk version.

Awesome!  Very cool.  I was away for a bit, so please forgive my naive Q's;
Is your modified app fully functioning when installed? i.e., able to save screenshots, etc... 
Is it easy enough to try your mods by doing a simple remove/install of the APK?

7

Test Equipment / Re: Micsig Current Probe CP2100A/B Tests and Comparing

« Last post by ceut on Today at 06:01:16 am »

Hello,
I have received my Misig CP2100B.
It is really a great current probe 

Some photos, because it seems to be a new 2024 batch:
- wire is not a big grey for the clamp, but thin soft black
- piece of rubber to hold the cable
- the in/out of the wires are rigid plastic part 

I have also checked the power consumption on RD6006P with its great calibration  : it is really low  0.044mA
And it seems the relay may be a 2 coil-latching one, because there is only a very short peak of current when switching at about 0.15A, then come back to 0.044mA

8

Power/Renewable Energy/EV's / Re: Output Capacitor Selection for Buck Converter

« Last post by Faringdon on Today at 05:55:26 am »

Yes.
Please find the attached LTspice sim.....make out that for your capacitor bank.

simsurfing.com (by Murata?) for MLCCs is a free program which shows these charts

9

Beginners / Re: Connector name

« Last post by zanfar on Today at 05:54:56 am »

I'm not sure your photo is clear enough to give a concrete answer; but yes, there is something other than "six wire".

Key parts to identifying a connector would be the end-on shape of both the housing, and the individual pin shrouds (take a clear photo straight on of the very end) and the pitch which is the distance between pins. Again, it's not completely clear, but that looks about the scale of a Molex Mini-fit, or 4.2mm pitch, but I'm sure it's not a mini-fit.

10

General Technical Chat / Re: Is VAT number needed when ordering from Arrow USA?

« Last post by EPAIII on Today at 05:34:01 am »

Thanks for the clarification. I guess it sounds somewhat sensible. But probably not perfect, like everything else.