Oscilloscopes on a budget

[EL34]

Check out this video
This technician test a $18 oscilloscope and uses it to fix a commodore computer.
They are now $21 and there is a $24 version that has better cable/probes.
https://www.aliexpress.us/item/3256805458469353.html

There are more expensive units also at Ali.

I buy stuff from Ali Express all the time in case you are concerned about this site.

[Latole]

Nice scope, can I test 240 volts sine wave or it is only good for low voltages ?

[EL34]

I don't remember
Did he say in the video?

[Latole]

I don't know. I did not listen all.

[shooter]

from what I seen, he stays mostly on the digital side of things, signal path stuff.
from what I know about scopes, you can measure about any VAC or VDC with "input conditioning" so things like voltage dividers for DC and step-down transformers for AC.
scopes aren't really the go-to piece of equipment for "power"  that's best done with meters designed for that purpose

[acheld]

I got one after seeing the price and part of the video.

It is a very simple device, BUT it seems to work very well.   Locks on to signal readily, and displays nicely.

Product info states:   1X 400VPP 10X 800VPP

I would not consider this as a replacement for a standard 'scope due to its simplicity . . .

But I will use it as a monitoring device.   And if it craps out, well ok,  I'm out $24. 

[Latole]

Thank you all.
Last Week I just bough Hitachi V-422, second hand, for $90 us
Complete with manual an 2 probes. It work well

[EL34]

I don't know. I did not listen all.

That explains that

[Latole]

I don't know. I did not listen all.

That explains that

Thank's