| Electronics > Beginners |
| Yet another what DMM should I get thread |
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| Discotech:
--- Quote from: Fsck on June 01, 2018, 08:35:19 pm ---More meters > less meters. If you build a power supply, a very common project, 4 meters are very handy to measure input/output. I'd take a duo of the others. --- End quote --- But which ones ? I'm thinking the ZT30x's because they're the newest models, but newer doesn't always = better I know they're cheap DMM's but I don't like wasting money whether it's 50p or £50 so I'd like to get whatever combination is the best for the money Or is there relatively little difference between them ? |
| tautech:
Ok so this is doing your head in. ;D Until you've owned one or two you won't really know exactly what you need (I didn't) so I could say a 6.5 digit bench DMM to cover most bases but that would be silly as you haven't got that kind of budget. If you're willing to do a good bit more study check out Joe's excellent DMM testing thread: https://www.eevblog.com/forum/testgear/hear-kitty-kitty-kitty-nope-not-that-kind-of-cat/ He's trying to bust DMM's with zaps that ordinarily a DMM won't get to see but this is about robustness that should be factored into any investment you make. The cheapest 'good' DMM is the Fluke 101 but it's fairly limited in capability. A AN800* or a Uni-T will be good enough for now I expect. You should set your sights on having 2 main DMM's to use. |
| Discotech:
--- Quote from: tautech on June 01, 2018, 09:07:17 pm ---Ok so this is doing your head in. ;D --- End quote --- I've decided to go with the ZT301 and 302 just because I have some eneloop rechargeable batteries sitting in a drawer doing nothing that I can stick in them :palm: |
| bd139:
Let us know how you get on :) |
| rstofer:
--- Quote from: Discotech on June 01, 2018, 05:07:15 pm --- It seems like cat ratings then are more suited towards actual electrical engineers in industry doing proper electrical stuff rather than aimed towards hobbyists who are only tinkering (unless they get adventurous and decide to rewire their home ?) So am I safe to assume for the sort of things I'll be doing (starting off with at least) the Anengs will be capable enough and if/when I want to move to more complex and higher voltage than what you'd find in synths then that is the time to move to a more expensive bit of gear ? --- End quote --- Essentially, yes. If you can stay away from the mains, the source of high energy, you should be good to go. Stay away from large battery banks (arguably including automotive batteries) and large capacitors as well. The meters are fused on the current ranges and, more often than not, the fuse doesn't have a suitable rating. So things get exciting when you measure voltage with the probes set for current. As with anything electrical, you need to take care. Check your meter setting before you jam your probes in a circuit. Later on, you'll see why 10V stored in a 1 Farad Super Cap can release a LOT of energy if it gets shorted out. I'm using the AN8008 interchangeably with my other meters. I work with low voltage stuff on my bench and I don't give it a moment's thought. For me, +-15V is about as high as I go. If I were working on tube amps, I wouldn't change a thing. The meters are fine! I see no reason to work on line powered high energy SMPSs. If I need a power supply, I'll just buy one. |
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