Recent Posts

1

Projects, Designs, and Technical Stuff / Re: W5500 broken link

« Last post by S. Petrukhin on Today at 12:44:13 pm »

Added information.

W5500 resets the status, loses the PHY and IP settings.
There may be an incorrect reset scheme, I'm checking it...

2

Beginners / Re: Do I understand the terminology of voltage/current?

« Last post by radiolistener on Today at 12:42:14 pm »

Is it correct to say that the voltage is converted to heat?

No. Power is not voltage.
Electric power = voltage * current

The heat power = ΔT * q
where
ΔT is temperature difference (analog of voltage in electric power)
q is heat flow (analog of current flow in electric power)

So, in this case electric power (voltage * current) is converted to heat power (ΔT * q).

3

Test Equipment / Re: SDS800X HD Bug Reports + Firmware

« Last post by 2N3055 on Today at 12:42:02 pm »

Still, something is wrong in the screenshot eTobey shared. Mask details aside, the zoomed view does not show the time window indicated in the upper window. What happened there?

I have no idea.
I have shown how it looks on mine.

4

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

« Last post by RAPo on Today at 12:40:41 pm »

Le night with OHMITE

5

Other Equipment & Products / Re: Faxitron Biovision/Bioptics Win7 (PCI resource issue)

« Last post by mikeselectricstuff on Today at 12:37:39 pm »

Fibre interface chips  are CY7B923 and 933, 1231 datecode

6

Beginners / Re: audio amp study

« Last post by kevin.gibbs on Today at 12:37:28 pm »

With a 200kOhm resistor, you will set half of the power supply at the amplifier output. Selecting a 20-ohm resistor (in series with the diodes) will set the amplifier's initial current to about 50mA (when there is no signal)

7

Programming / Re: Linux Dependency Black Hole

« Last post by mag_therm on Today at 12:36:26 pm »

Thanks atardov and tatel
Here is what I propose to do for my problem which is NXP MCUXpresso:

The usb installer from linuxshoponline for Debian 12.4 is due to arrive soon.
I will buy another ssd sata today , then dd /dev/zero it using fedora, then  set it up in rack as the only media
install debian per installer instruction on the usb
install pyenv which I understand is only available from github as  ~./pyenv
Add LD_LIBRARY_PATH pointing to ~./pyenv...python3.8

then start install on debian 12.4  of the MCUXpressoide....deb.bin   from NXP . I will try to find any NXP instructions for that
If significant problems I will start new thread on eevblog with scrots etc  requesting assistance.

8

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

« Last post by Psi on Today at 12:35:54 pm »

Building nuclear power stations on the moon is probably not an issue that needs solving until we have a pretty decent sized base up there, or we want to start doing some actual mining/manufacturing up there.

Until then solar + RTGs make more sense.

9

Projects, Designs, and Technical Stuff / Re: Are multicolor panel indicator lamps useful or confusing?

« Last post by kevin.gibbs on Today at 12:35:48 pm »

I think they can be both helpful and confusing. If the color assignment of the LEDs is the same for different nodes (e.g., red is a fault, as you indicated), diagnostics should be more accessible.

10

Beginners / Re: How To Make Non-Zero Initial Current Sense Voltage Zero?

« Last post by kevin.gibbs on Today at 12:34:15 pm »

I would just remember to subtract 1 Amp from the measurements. If you want to keep that meter, you can make a subtractor on an operational amplifier.