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| Is this "Cleqee Direct" store's 300MHz 5000V oscilloscope probe good? |
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| Edin:
I came across this 5000V 300MHz scope probe on eBay at a decent price, but I wonder how good is it, does it really meet the specs, has anyone tested it. I notice it doesn't have any sort of a spring for very high frequencies, which is suspect to me. In case the link doesn't work, here is the image of it with its accessories: The link to the store item is here: https://www.ebay.com/itm/165865878983 |
| Fungus:
--- Quote from: Edin on October 24, 2024, 07:46:47 am ---I notice it doesn't have any sort of a spring for very high frequencies, which is suspect to me. --- End quote --- I think 5000V might be able to jump across the gap on one of those springs. |
| Kean:
It is probably OK at the rated voltage, but without a ground spring I doubt it gives good measurements at high frequency. And you'd want to try find some documentation with derating curve, as no way is it going to be able to do them at the same time. The price is pretty good for a 100:1 probe, but it is sold by many companies other than Cleqee so I doubt they manufacture it. There are a few posts here about Cleqee probes https://www.eevblog.com/forum/testgear/buying-a-bunch-of-probes-leads-etc-on-a-budget/ Note post 3 where bdunham7 mentions having one of their 5kV probes. You could send him a message to see if he has any thoughts. https://www.eevblog.com/forum/testgear/cleqee-p4100-high-voltage-oscilloscope-probe-1001/ Discussion of a different model 2kV probe. Here bdunham7 mentions using the P2301C successfully with 4kVp-p @ 20kHz. PS. When posting links to shopping sites, it is best to remove all the tracking crap from the link. With AliExpress and eBay you basically only need the item number and nothing after it. PPS. I just looked on AliExpress Cleqee Official Store and these are 20-30% cheaper than eBay prices right now - at least for me AUD ~$92 vs ~$64. https://cleqee.aliexpress.com/store/1810103 |
| Edin:
Of course I wouldn't use the spring when measuring such high voltages, only for measuring high frequencies. According to the specs, its loading capacitance is only 6.5pF, which is better than almost all 10x probes, but still not great when going into the high MHz frequencies. |
| Edin:
Thank you for your helpful answer. I will check those links and also ask bdunham7 about it. Also thank you for the advice about links. It DID look terrible. I have shorted it now to the bare minimum. |
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