Products > Test Equipment
Keysight New instruments
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EEVblog:

--- Quote from: balage on March 08, 2021, 09:29:49 pm ---Here is something about the original thread.
Do you see the screen of the instruments? At the bottom. Is that a windows bar? What da...
--- End quote ---

Top notch community trolling from Keysight!  :-+

jjoonathan:
Hey are you sure you didn't include the new secret instrument by mistake in that photo?

Keysight DanielBogdanoff:

--- Quote from: EEVblog on March 09, 2021, 01:54:47 am ---
--- Quote from: balage on March 08, 2021, 09:29:49 pm ---Here is something about the original thread.
Do you see the screen of the instruments? At the bottom. Is that a windows bar? What da...
--- End quote ---

Top notch community trolling from Keysight!  :-+

--- End quote ---

You know, we gotta keep the bar high

@jjoonathan gah can you imagine trying to go back to frog legs? Or ox heads?
tszaboo:

--- Quote from: Berni on March 05, 2021, 06:20:20 am ---I think a fuse would be a good idea to have on a PSU with such a SCR crowbar circuit.

Its not even that difficult to get around the fuse voltage drop. All you do is hook up the sense wire after the fuse. Since the voltage sense is a high impedance input it is a lot easier to protect it using the good ol resistor and TVS diode.

Tho that fuse then only protects the PSU from the DUT. If the crowbar trips because of a fault inside the PSU it wont blow, but then again at that point you need an extensive PSU repair anyway, and a common fault with linear PSUs that makes them output too much voltage is a blown pass transistor, so your power stage is already dead anyway, eventually a fuse at the transformer would blow to stop it from catching fire.

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No. A large lithium battery can easily supply 1000A if short circuited. You would need a fuse with 1000A DC breaking capacity. Fast acting, because you want to protect semiconductors with it.
And then you realize that fuses are not meant to be used to protect semiconductors, they are there to protect wires from catching fire. A power supply is not a charger.
SilverSolder:

--- Quote from: NANDBlog on March 09, 2021, 08:29:12 am ---[...] A power supply is not a charger.

--- End quote ---

Once you go down this road, you can equally argue "A power supply is not a diode tester", "A power supply is not a LED driver",  "A power supply is not a TEK module driver", and any other specific thing you are doing with it?

I have always viewed a lab power supply as a general purpose source of power with variable voltage and variable current -  what I do with that voltage and current is surely up to me?
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