| Electronics > Beginners |
| 30$ JYEtech scobe from ebay: What can it do? MEASURE MAINS!!!! |
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| Beamin:
I got a few of these mainly because the first two magically self destructed and the screen just would boot up white. Dave did a video on it and every other electronics youtuber. But not wanting to break my last one: Can I measure things like power supplies with the "probes" (alligator clips to BNC) it came with; no A/C filter like putting a cap for protection? Does this act as a low impedance device where it will just short my lab power supply out and kill the scope? Would it be saved if I run a real 10/100X probe on it? Or a 1m resistor in series on it? I have a whole bunch of little power supplies I found and would like to see how clean they are then connect some power resistors and compare. Could be use full for quick and dirty measurement where you don't want to lug around a scope. What the most voltage a scope can take? I never see those specs but I guess it's not a single answer or they just assume you know what you are doing. I'm still hesitant to burn up my tek 3365? scope from the 80's. I did only pay $100 for it, but thats $400+ to replace. If I could learn on this little one it would be perfect. |
| lordvader88:
Are you talking about a pocket scope like a DSO138 ? Yeah IDK what the highest input voltage is, but it's not that high, maybe 50V. They work fine with 10x probes on RECTIFIED 169V from 120VAC, I think I used it on 320VDC from the PFC stage of a computer PSU. I never bothered to try probing before the rectifier tho so IDK, but with 10x probes I 'think' it should handle it fine. |
| stj:
most probes only have insulation ratings of 300v btw. and that de-rates as the frequency increases too. |
| Beamin:
--- Quote from: stj on July 25, 2018, 12:43:18 pm ---most probes only have insulation ratings of 300v btw. and that de-rates as the frequency increases too. --- End quote --- As far as the impedance goes: it comes with alligator clip leads. Could I just connect them directly across a <20v power supply like I could a voltmeter? |
| Nusa:
The specs for whichever model you have are listed on the appropriate page on the site: https://jyetech.com/Products/Oscilloscope.php Also links to documentation if you don't have it. Some of the counterfeits probably left it out. |
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