Products > Test Equipment
UNI-T UT61E Multimeter teardown photos.
user4963:
measure the values ??of the capacitor can write one of these?
Please
Lightages:
I might be able to do that tomorrow
user4963:
thank you.Lightages
Rick Law:
--- Quote from: Electro Fan on August 20, 2013, 09:31:26 pm ---
--- Quote from: Rick Law on June 08, 2013, 05:20:34 am ---
--- Quote from: Legit-Design on June 08, 2013, 03:39:48 am ---...Plus more multimeters is always priceless and enables to do alot more things....Unless they come out with a multimeter with multiple isolated channels, those things are hard to beat when combined.
--- End quote ---
I am reasonably happy with the 61E. I already have 3 others - 2 radioshack and a DT830B. But I actually was thinking about getting a couple more DT830B's when I was playing around with boost circuits:
In Volt, in current, out Volt, out current, drain current, that is 4 right there. I could use another one to do adhoc readings.
One of my 4 is a DT830B, $6 DMM, not bad. I use it as my volt meter for my PSU. It actually performs better than the other cheapos from Radio Shack (4-8 years old). So I was considering getting a pair of DT830B. But I hate all those stuff on my table leaving me so little space.
I would not invest in another mid-low end DMMs. If I would get more DMMs, I will probably aim for a higher end ones or real cheapies. Mean time, I just got my ATMega328 as Volt/Current meter working on a breadboard and ordered parts to transfer it to PCB. I divided up the 6 ADC's as 3 pairs of volt+current (switch-selectable) 0 - 5/15/30Volt and fixed 0-4Amp (using a 0.1ohm as current sense and amplified with OpAmp). The two pairs I have working gets me +-1% to 4% accuracy. Not bad when I have not yet calibrated them yet. After I get the parts, I can get the 3rd pair working, transfer it to PCB, and then I'll do some software tricks (the ADC under-reads at low ranges). If I can bring it closer to 1-2% using my UT61E as "accurate" reference, I just may end up using the ATMega as my PSU's volt+current. All three channels shares common ground, so it took me a while to figure out how I would make that work for me. If the thing works (at +- 1-2%), I don't need the DT830B's as volt/current meter. If it doesn't, well, I learned a lot trying to get it working so far.
--- End quote ---
Please keep us posted on how your Atmega328 meter reading project is going - I'm sure some folks would be up for trying your design if you want to share it. Thx
--- End quote ---
As promised...
https://www.eevblog.com/forum/microcontrollers/an-implementation-of-atmega328-volt-logger-the-dinometer-a-learning-project/
Benik3:
I suppose that it's the best choice under 75USD? :)
Only thing which disappoint me is the resistance for measuring of high currents :/
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