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Quote from: joeqsmith on April 09, 2019, 12:19:50 pmI plan to use that poor man's vibration table as part of my testing. I'm sure those speakers were not designed for what I am doing with them....Ever heard of buttkicker transducers? Might be just the ticket if those speakers aren't sufficient... thebuttkicker.com
I plan to use that poor man's vibration table as part of my testing. I'm sure those speakers were not designed for what I am doing with them....
To rent time at a lab and have a product certified I would imagine is in the order of $20,000 or so USD. I really don't see that as being an option. Even if we didn't certify them, the rental costs would far exceed what I would be willing to spend. The we have the problem that I am not really interested in seeing the meters pass their safety standards or not. A lab like this will have generators specifically for running the IEC standards which is not at all what I have been showing.
Quote from: joeqsmith on April 09, 2019, 10:39:20 pmTo rent time at a lab and have a product certified I would imagine is in the order of $20,000 or so USD. I really don't see that as being an option. Even if we didn't certify them, the rental costs would far exceed what I would be willing to spend. The we have the problem that I am not really interested in seeing the meters pass their safety standards or not. A lab like this will have generators specifically for running the IEC standards which is not at all what I have been showing. Opps i should clarify that the option was intended to the viewers , not for you to check, since you mentioned something about this matter in one or more the videos as a sugestion.
You like the meters that share the current with the voltage?
I best not shake my Mastech meter then. I think it has more pots than any of my working handheld meters.
Quote from: joeqsmith on April 13, 2019, 12:00:07 amI best not shake my Mastech meter then. I think it has more pots than any of my working handheld meters. Please do include at least one multimeter of your choice with pots for calibration.
Does the masteech has many pots as this ut204A?
What I saw on UT70C is that trimpot has too much of the adjustment range. Replacing it with combination of fixed resistors and much smaller trimpot would make much more stable in that regard.
I have a few meters that have not gone to the recycle yet that I could strip the pots from to run a test like this.
Most of the meters I look at now do not have trimmers.