Hi. Bring here the head scratchers...

----> https://www.temu.com/anti-gravity-l...-air-purification-and--g-601099798968443.html

----> https://www.temu.com/-anti--mist-hu...-plants-and-home-decor-g-601099677127683.html

[MODERATION: Edited links to remove tracking information.]

 

A pump for the raindrops, and ultrasonic for the misting?

 

Not going to a site that requires my email just to look.

 

Another for the "How does it work" ?

----> https://www.temu.com/lightweight-an...-anti-camera-detection-g-601099579368783.html

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Not going to a site that requires my email just to look.

Am sorry; did not know that I wouldn't either.

 

Is there electric current from the central electrode, to the gas, trough the glass, to the finger ?

 

Sub to this channel. https://www.youtube.com/@PhysicsHigh/videos

 

How does a 50 ohm 'dummy load' RF resistor means a 10 dB loss ?

 

Hello,

That is not a load, but an attenuator.
This german site also sells them with 5 different attenuations:
https://www.box73.de/product_info.php?products_id=4762
This power resistor can be used as dummyload:
https://www.box73.de/product_info.php?products_id=1583

Bertus

 

Thanks, Bertus.
My german is not good enough to follow that site and learn if those attenuators being all? 50 ohm? berilium? ceramic resistors? ; how they present (5) different attenuation choices or they are several Ohm flavors.
I was looking for 50 Ohm dummy load RF resistor loads when stumbled to the post #8 head scratcher.

In that german site; they show a 50 Ohm load being 40dB attenuation:



And other all 50 Ohm? with several attenuation choices:

 

Perhaps am answering myself: I can see this is "in-line" "in series" coaxial attenuator [resistive network inside]




and this is a termination load; [single resistor load inside] :

 

Hello,

The white resistior like attenuator is likely to be symetric, so it does not matter wich is the in or output.
The encased attenuators are most times asymetric, so take care of in and output.

When you terminate the 40 dB attenuator with 50 ohms, it will become a dummyload.
You can use the 40 dB output also to connect to a scope with 50 ohm input.
That way you can measure powers.
Never put any power at the 40 dB attennuator output, it will damage the device.

Bertus

 

Hello.
Is it an optical something ?




----> https://www.temu.com/universal-car-...&refer_page_id=10076_1736182829139_jul4i1ycks

 

Cheap GPS chip.