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ANENG A3008 (6000 count ultra-compact pen-type DMM): Review, Photos and Teardown

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Paul T:
Does this require destroying the labels to open the unit? I would like to make my A3005 backlight stay on all the time with the "0" resistor jumper.*

I bought these two less-featured items for a negligible amount of money during AE's Dollar promotion.  It's difficult to see the display with my aging eyes, more light is better.

ANENG A3005 (normal LCD)
ZLLJMETER ZL12B (reverse LCD always backlit)

The ANENG voltage measurement was spot-on, but only about 1V or more.  The ZL12B was 0.5% high.
The ANENG resistance was very accurate above 50 ohms to 20 Meg.  The ZL1212B was 0.6% low, same range.
No Capacitance mode for these.
Diode mode was horrible, a Schottky measured 45 mV, a silicon 0.55V, and RYOG LED's all measured the same 1.55-1.66V. No blue, white, UV, etc.  Emergency use only.

*Most meters have a transistor which turns on the backlight at the command of the CPU.  If you put a resistor across the C-E leads, you can set the backlight to stay on all the time at reduced brightness you select, and the normal backlight on function of the meter just makes it full brightness.  If you use a jumper, it will stay on full brightness. 

Usually, the backlight will turn off when the CPU does.  If not, you can easily reverse the mod.  I've done this to UNI-T UT210E, UNI-T UT202BT, ANENG ST181, ANENG 213, maybe more that I can't recall right now.

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