Oops..... .....I haven't yet subscribed but we can soon fix that, a brilliant informative sequence of great videos, many thanks....
I have a couple of 117s and will need to check them again to see if there was any off mode current draw, I did test them once but cant remember and I religiously pull out the batteries when not in regular use, your 115 appeared to recover once the battery was removed and reinstalled the first time around but it may have been just a coincidence and something else altogether.
Kind regards....
Muttley
Thanks. I have no idea what happened with the 115 during the testing. If I were to guess, I think it caused a latchup condition in the control IC. I would not be surprised at all if removing the battery is not
was what caused it to recover.
To be clear, I wonder if they do not use for example safe state machines and the discharge caused it to go to an undefined state and hang, or if the device when metastable.
The way it somewhat still worked, I suspect it put it into an undefined state.
Hey Joe, I have several people on another forum that want to know the EXACT specs of your HF test that blew the leads off. Specifically, FWHM, source impedance, was it the HV spike only or did it include the AC load as well, etc. Any details you can provide would be great. I have already been told I have an axe to grind because I panned the HF meter
I saw someone had asked about in the comments for the video as well. They are always welcome to join the group. You know what is funny about this? When someone asked me to run another one, I had cut apart one of the probes from the other ones to make my shorting stick for the first generator. You see it in many of the videos. It was very poorly made. This made me think, I should run this meter with the leads. I think this was the only time I really tried the leads that came with any meter. Part of me was glad I did as it shows just what can happen with poor quality leads. Imagine some high voltage wire flapping around in front of you!!
I'm not sure why this would ever be a question. As I said in the videos where I was making the second generator, I was targeting 400 joules. I explained how I came up with that number as a goal. All three generators use 2 ohms. I pretty much gave up on the higher resistance values after the first rounds of testing. Photonicinduction would laugh at that amount of energy but it's way higher than the sub 20 I had been using to test the meters.
What would be fun is to put one on a real generator and see what happens! Oh yea...... I think Fluke has some videos like that!
At this time I have not added any testing with the line simulator to the spreadsheet. All of the meters I have been looking at would not have a problem with it (well there is that UNI-T
)
i like the details on the Hz response of the continuity and the hysteresis. +99pts !
Thanks! It makes a lot more sense to me as well versus just rubbing the leads together.
The second half of the video is uploading and will be available shortly...