| Electronics > Beginners |
| 6000 count DMM's (NOT a good $9 newbie meter..) Resolved. |
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| floobydust:
I lost touch if joeqsmith is ranking at different (increasing) levels or just hits them at their fake ratings, overvoltage Cat. xxx test voltages. It looks like the same crappy PCB layout, kindergarden-grade, as all the low cost chinese DMM's have- bad spacings and traces smoke and burn when overvoltages come in. If it isn't arcing to the battery holder, it's arcing on the mile long run up to the PTC, or at the fuse holder clips, or the rotary switch etc. :palm: The clamp diodes look better, it's a single TVS on the ANENG 8008/8009 but here it's a 5-diode bridge. I also don't see the discrete ICL8069 Vref IC, so the on-chip one is used and I wonder how it performs. |
| joeqsmith:
--- Quote from: floobydust on July 17, 2018, 04:26:19 pm ---I lost touch if joeqsmith is ranking at different (increasing) levels or just hits them at their fake ratings, overvoltage Cat. xxx test voltages. It looks like the same crappy PCB layout, kindergarden-grade, as all the low cost chinese DMM's have- bad spacings and traces smoke and burn when overvoltages come in. If it isn't arcing to the battery holder, it's arcing on the mile long run up to the PTC, or at the fuse holder clips, or the rotary switch etc. :palm: The clamp diodes look better, it's a single TVS on the ANENG 8008/8009 but here it's a 5-diode bridge. I also don't see the discrete ICL8069 Vref IC, so the on-chip one is used and I wonder how it performs. --- End quote --- Still stepped using the same levels until damaged for any new meters. 8008 like the ZT102 uses a 2 diode clamp in series with a PTC. There is a TVS for the current input. From the pictures I saw, this meter appears the same. |
| malagas_on_fire:
--- Quote from: malagas_on_fire on July 17, 2018, 03:32:06 pm ---Hi there. So there will be a test of this meter for robustness ? It will stay at the same level as one of the bigger KaSUNtest / Aneng / Richmeters ( A bunch of brands...) that was bigger KT6000 / ANENG AN860B maybe? Do it survive a controlled pulse from flyswatter? I have a new flyswatter that is rechargeable but has similar voltage (1989 Volts ) as the AA operated. --- End quote --- Please ignore the flyswatter idea unless using a proper High Voltage probe, since i have "zapped" one meter years ago.. Well about the construction of the meter is what you get for the money... It was only the bare minimal protection and looks like a CAT II 300V |
| Cliff Matthews:
See Joe's review here: |
| MacMeter:
Joe Lightning STRIKES again!!! Who else creates a 50 minute video for a $10 meter, including “slow motion” action sequence? Awesome job Joe, learned a lot. THANKS!!! |
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