Test Equipment Anonymous

I foolishly didn't dig further, figured it was a NiCd and didn't notice until after installing it that it is in fact NiMH. Of course to complicate things, this instrument is from HP's later "no schematics included" generation, so this will be a PITA. (And of course I also have since found...

Not always: take the Tek1502, which uses a PUJT to stuff pulses into the 9-cell NiCd battery. Mean current might be OK, but the crest factor is ridiculous. Even Tek had to issue a note saying "don't charge continuously for more than 16 hours" (and recharge once/month, because even when sw...

I see that EEVBlog post speculates about current limiting being done in software rather than hardware. I've wondered the same, particularly in light of my PSU having OVP and OCP in firmware. It's not speculation, the manual hints at it, and the tech support that they spoke to explicitly stated it t...

AliX fogger?

https://www.aliexpress.com/item/1005006463663595.html

True RMS meters were preferred for THD measurements as they dealt accurately with noise as well as the mainly harmonic residual. Older distortion analysers didn't have them and spent a page in the manual apologising for it. They are used for accurate measurements with all sorts of power electronics...

My free-standing worktop height one uses less than 100W with the compressor motor running. Be careful if you plan to run one on a UPS; the motors don't like modified sine or square waves, they cause too many I 2 R losses and consequently overheat. I'm guessing 1kW is a momentary inrush? Most UPS's/...

Latest from styropyro: https://www.youtube.com/watch?v=OC7sNfN ... &index=100

Ok, had to rearrange the stack to accommodate the load:


Since I can't very well do without the counter, I've moved it to between the pc and the scope:

EC8010 wrote: ↑Thu Feb 19, 2026 7:21 pm To be fair, he's used lightweight bricks. But nobody has told him about corbelling, and I'm not even certain that cement was involved. But the air-conditioning has been fitted. Hong Kong?

Brazil

I did have it higher, but it was blocking the racking behind. I have a lot of things stacked in "storage" in my bedroom... My daughter's bedroom has been repurposed :) Still not big enough :( :lol: Time to add an extension or two? https://external-content.duckduckgo.com/iu/?u=https%3A%2F%...

Here's what it looks like today. It will change when the Tenma load arrives.

EC8010 wrote: ↑Tue Feb 17, 2026 12:44 am HPAK and Keithley handles fold neatly underneath the instrument; there's no need to remove them.

They stick out at the sides though, making it impossible to stack 1/2 width items side by side on top of full width ones.

My hot air and preheater are cheap Tenma ones. I checked the earth integrity before using. I recovered some SMD LEDs from an aluminium board yesterday, turned the preheater up to 300ºC, the air to ~50% flow and 400ºC. Wait for the solder to visibly start to melt (difficult here as they had the bare...

As you get older everybody really should come to appreciate Cassandra's plight more acutely. Doing most things for the first time is more interesting than repeating experiences. But by the 10th time... Are you sulking? :lol: https://www.eevblog.com/forum/chat/what-happened-to-tggzzz/msg6185271/#msg...