Recent Posts

1

General Technical Chat / Re: It's "sodder", not "soLder", damnit!

« Last post by Analog Kid on Today at 05:30:07 am »

Not everyone in the world talks the way you do. (Thank god!)

Yet here you are in your very first comment correcting complaining that someone talks different to you?

First of all, we say "different from", thank you very much.

No, I'm complaining about someone from my country who insists that his pronunciation of solder is "correct" (it's in that video somewhere) when actually it's not, given that all his fellow countrymen, including me, pronounce it with a silent "L".

You over there can pronounce it any way you like, and that's fine by me.

It's as incorrect as my Turkish friend who pronounced the L in "half" (couldn't blame him for reading it phonetically).
And I had another friend who pronounced the "t" in "often", which is just as incorrect. For us, that is.

2

General Technical Chat / Re: It's "sodder", not "soLder", damnit!

« Last post by IanB on Today at 05:27:33 am »

Interesting, I have never heard "cold" or "fold" with a silent L

So cold and fold have a so-called dark L sound. In the video below, listen to how Emma pronounces cold. Then imagine saying it fast and casually, without really enunciating it. The L sound is basically going to disappear:

https://youtu.be/46_JQbfEtjM?si=DlJtsBIRI2sNun2_&t=608

3

News/Suggestions/Help / Re: Getting a lot of "502 Bad Gateway" errors

« Last post by EEVblog on Today at 05:26:06 am »

Precursor is only available on the Enterprise plan, which is quote based which means "if you have to ask, you can't afford it".

https://blog.cloudflare.com/introducing-precursor/

It might be a regional deployment thing. I hadn't seen the option before, but I followed the link from the article, and the option was there in my free plan.

I also followed the link, not there 

4

Projects, Designs, and Technical Stuff / TVS Diode Usage and Diode breakdown voltage

« Last post by injineerka on Today at 05:21:04 am »

Hi everyone,

I am designing the circuit shown below. Here is an overview of what I am trying to achieve:

The maximum input voltage is 22.5 V, and the circuit should work with reverse polarity, hence the use of the bridge diode.

The TVS diode is an SMF4L24A from Littelfuse, and it is intended to handle transients. The TVS diode's clamp voltage is 38.9 V. I understand that the clamp voltage is not constant and can vary depending on different conditions.

I believe the TVS diode should be bidirectional, considering that the input voltage is supposed to be polarity-agnostic. Please correct me if I am wrong.

Since the clamp voltage of the TVS diode is 38.9 V, while the VRWM of the diode is 30 V, is there a possibility of damage to the diode during a transient?

A colleague suggested that the transient is very fast and therefore might not damage the diode, but neither of us has a clear understanding of whether this is correct.

We could use a higher-rated diode, but we are working with a space-constrained board and would prefer to keep the small package of the current diodes.

We also considered using a bridge-diode IC, but decided against it due to supply-chain concerns.

I would appreciate it if someone could review my assumptions and clarify these questions.

Thank you!

5

Buy/Sell/Wanted / FS: Tektronix MSO4054 with analog and digital probes

« Last post by dbator on Today at 05:20:02 am »

Hello,

For sale here is my Tektronix MSO4054.
Scope is fully functional unless top fan which is buzzing at full speed (during POST) due its one blade which has a little crack - I can replace the fan for a decided buyer at no cost.
The set consists of:
1) Tektronix MSO4054 sscilloscope incl. its original cover. One foot is missing.
2) 4 pcs. of 500 MHz analog probes from Testec TT-HF 612 (version without auto attenuation detection). Probes are boxed, complete and not much and carefully used (in a great condition with no signs of use) and under warranty until May 2027.
3) 1 pc. of Tektronix P6516 logic probe (without mini grabbers and other accessories).

Selling price is 17000 PLN. However feel free to make offers. Every offer will be answered.
Preferred currencies are PLN and EUR, but are not limited to.
Shipping around the globe - just ask for shipping quote to your country. Shipping cost can be even on me.

6

Test Equipment / Re: Atorch DL24 Electronic load software

« Last post by OmarC on Today at 05:16:00 am »

Hi

Please ignore the above and use the excellent dl24.py from mosafet if you have the HID version.

https://www.eevblog.com/forum/projects/reverse-engineering-the-atorch-dl24-(newer-usb-variant)-protocol-and-board-notes/

7

General Technical Chat / Re: It's "sodder", not "soLder", damnit!

« Last post by lowimpedance on Today at 05:12:18 am »

If anyone is interested to delve into it further, it has been discussed at length in 2014,2018 and 2022 here. So 2026 means its due again 

And its Solder 

It's that to you. Not to us.
To us it's "sodder".
Why can't people get that through their thick skulls.

Not everyone in the world talks the way you do. (Thank god!)

Good for you..
Rather than wasting time creating more endless discussion on this already done to death topic see previous threads, or why don't you PM 'John tinkers' to ask for his opinion, he's a registered user here.

8

Test Equipment / Re: Keithley DMM7510/DMM6500 Hidden Game

« Last post by Mickle T. on Today at 05:09:40 am »

Now I need to know the other hidden features...

Attached is a far-from-complete list of TSP interface functions and constants—including debugging and system-level ones hidden behind Lua metatables.
Examples:
1. Entering calibration mode using the admin password if the user password has been forgotten:
cal.unlocknorecall("ADMCAL75MM")
2. Dumping calibration constants:
print(ki.cal.getdata())
3. Remotely disconnecting/connecting multimeter inputs:
ki.dmm.connect = 0
ki.dmm.connect = 1
4. Dumping NVRAM:
print(ki.sysinfo.nvmemdump())
5. Changing the interface language without rebooting:
ki.sysinfo.lang = "SCPI"
TSP$ki.sysinfo.lang = "TSP"
The TSP$ prefix allows the following command string to be executed in TSP mode, regardless of the currently selected system interface language.
6. Executing SCPI commands in TSP mode:
TSP$scpi.execute('TRIGger:CONTinuous REST')
7. Determining fan speed:
print(ki.fan.getfantach())
8. Setting a specific fan speed (0–100%):
ki.fan.dutycycle = 40
9. Forcing the device into local mode:
ki.tsplink.golocal()
10. Rebooting the device:
TSP$ki.reboot()
11. Retrieving the error description for a specific code (example: 0x1642):
print(ki.eventlog.geteventinfo( 0x1642 ))

9

General Technical Chat / Re: What did you buy today? Post your latest purchase!

« Last post by abeyer on Today at 04:51:15 am »

What are these? Any idea the value?

That MSC board looks like an SMARC compute module... can't read most of the chips, but the processor is an iMX8. Looks like they're ~$50-$200 USD for new ones, probably mostly driven by how much ram and flash it has on board.

10

General Technical Chat / Re: It's "sodder", not "soLder", damnit!

« Last post by gnif on Today at 04:44:29 am »

If anyone is interested to delve into it further, it has been discussed at length in 2014,2018 and 2022 here. So 2026 means its due again 

And its Solder 

It's that to you. Not to us.
To us it's "sodder".
Why can't people get that through their thick skulls.

Not everyone in the world talks the way you do. (Thank god!)

Yet here you are in your very first comment correcting complaining that someone talks different to you?