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| High voltage oscilloscope probes, make or buy? |
| (1/9) > >> |
| Mark:
Soon I will need to look at wave shapes and make some measurements which involve 1.2/50us impulses at 10kV. Can anyone recommend an oscilloscope probe for this task? Is it easy to roll my own? I'm not sure if I have the time or patience to tweak a home-made probe, but if it's a case of following a schematic and having it work first time, then I'm willing to try. Price limit for a bought probe is about 500UK Pounds. |
| swingbyte:
Hi what you need is a tek p6015 HV probe. If you are lucky you can get one for reasonable cost second hand. Look at the Tesla coil websites for how to make your own probes but if you want high bandwidth the tek is the only option. |
| MarkL:
I would not try to make your own. Why risk yourself and your equipment. I agree with swingbyte that the Tek P6015A would be the best choice, and possibly the P6013A which is an older model. The P6015A is still being sold by Tektronix. Manuals and data for the two are here: http://www.ko4bb.com/manuals/index.php?dir=Tektronix/Tektronix_-_Probes In particular, look at the charts that derate the maximum voltage based on the frequency and duration of measurement. There's a couple of both types on ebay right now within your price range. |
| electr_peter:
10kV is a bit too much to do DIY probe if you have no experience, risk is far too high. There are two reasonable options - differential HV probe and HV probe with divider. Pintek has a range of both types (http://www.pintek.com.tw/). Other manufacturers also have similar offerings. Differential probes are more expensive by default, passive HV probes should be cheaper. |
| Mechatrommer:
quite agree, unlike normal mains, KV range can jump off to your nearest skin if not careful. and characterising the homebrew probe is just as difficult unless you have high quality KV signal generator. |
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